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    196 results match your criteria Amyloidosis Macular

    1 OF 4

    The Efficacy of Q-Switched ND:YAG 1064 nm Laser in Recalcitrant Macular Amyloidosis: A Case Report.
    J Drugs Dermatol 2016 Nov;15(11):1456-1458
    Macular amyloidosis typically presents as small, dusky-brown or greyish pigmented macules, the result of altered keratin deposition. Treatment of these hyperpigmented regions with topical and systemic therapies remains challenging, however Q-Switched neodymi- um-doped yttrium aluminum garnet (ND:YAG) laser has proven to be an effective treatment modality to reduce hyperpigmentation. In this case report we investigated the ef cacy of Q-Switched Nd:YAG laser treatment on a 34-year old woman with recalcitrant macular amyloidosis who failed to respond to over-the-counter bleaching creams. Read More

    Dermoscopy in General Dermatology: A Practical Overview.
    Dermatol Ther (Heidelb) 2016 Dec 9;6(4):471-507. Epub 2016 Sep 9.
    Department of Experimental and Clinical Medicine, Institute of Dermatology, University of Udine, Udine, Italy.
    Over the last few years, dermoscopy has been shown to be a useful tool in assisting the noninvasive diagnosis of various general dermatological disorders. In this article, we sought to provide an up-to-date practical overview on the use of dermoscopy in general dermatology by analysing the dermoscopic differential diagnosis of relatively common dermatological disorders grouped according to their clinical presentation, i.e. Read More

    Amyloidosis in Retinal Neurodegenerative Diseases.
    Front Neurol 2016 8;7:127. Epub 2016 Aug 8.
    Centre de Recherche des Cordeliers, Institut national de la santé et de la recherche médicale (INSERM), Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, Université Pierre et Marie Curie Université Paris 06, Sorbonne Universités , Paris , France.
    As a part of the central nervous system, the retina may reflect both physiological processes and abnormalities related to pathologies that affect the brain. Amyloidosis due to the accumulation of amyloid-beta (Aβ) was initially regarded as a specific and exclusive characteristic of neurodegenerative alterations seen in the brain of Alzheimer's disease (AD) patients. More recently, it was discovered that amyloidosis-related alterations, similar to those seen in the brain of Alzheimer's patients, also occur in the retina. Read More

    Treatment of primary cutaneous amyloidosis with laser: a review of the literature.
    Lasers Med Sci 2016 Jul 16;31(5):1027-35. Epub 2016 Mar 16.
    Department of Medicine, Division of Dermatology, College of Medicine, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia.
    Primary cutaneous amyloidosis (PCA) is a condition characterized by tissue deposition of misfolded proteins. PCA can present in different forms, namely macular, lichen, and nodular amyloidosis. These lesions can be of cosmetic concern and are difficult to treat. Read More

    Macular Amyloidosis and Epstein-Barr Virus.
    Dermatol Res Pract 2016 14;2016:6089102. Epub 2016 Feb 14.
    Pathology Department of Mashhad University of Medical Sciences, Mashhad 9176699199, Iran.
    Background. Amyloidosis is extracellular precipitation of eosinophilic hyaline material of self-origin with special staining features and fibrillar ultrastructure. Macular amyloidosis is limited to the skin, and several factors have been proposed for its pathogenesis. Read More

    Neurocutaneous disease: Neurocutaneous dysesthesias.
    J Am Acad Dermatol 2016 Feb;74(2):215-28; quiz 229-30
    Department of Dermatology, University of Missouri, Columbia, Missouri. Electronic address:
    Dysesthesia is a generic term for a cutaneous symptom--such as pruritus, burning, tingling, stinging, anesthesia, hypoesthesia, tickling, crawling, cold sensation, or even pain--without a primary cutaneous condition in a well-defined location that is often caused by nerve trauma, impingement, or irritation. There are multiple types of dysesthesias depending on the body location and the nerves involved. While location, exact symptoms, and etiologies might vary, the underlying theme is that these conditions are of neurologic origin and have dermatologic consequences. Read More

    Macular amyloidosis complicating macroprolactinoma--a novel clinical association.
    Endokrynol Pol 2015 ;66(6):555-8
    Department of Endocrinology Post Graduate Institute of Medical Education&Research (PGIMER) and Dr. Ram ManoharLohia (RML) Hospital, New Delhi 110001, India.
    Amyloid deposition in the pituitary gland is a rare localised form of amyloidosis, and most commonly reported with prolactinoma. Macular amyloidosis is a rare form of localised cutaneous amyloidosis of obscure aetiology. In contrast to most localised amyloidosis, the precursor protein(s) of both macular amyloidosis and prolactinoma are unknown. Read More

    Nodular amyloidosis derived from keratinocytes: an unusual type of primary localized cutaneous nodular amyloidosis.
    Am J Dermatopathol 2015 Nov;37(11):e129-33
    Departments of *Pathology, and †Orthopedics, University of Massachusetts Medical School, Worcester, MA.
    Primary, localized cutaneous amyloidosis includes macular, lichen, and nodular (tumefactive) types in which the amyloid deposits are limited to the dermis without systemic involvement. The material in lichen and macular amyloidosis is derived from epidermal keratinocytes [keratinocyte-derived amyloid (AK)], whereas that in nodular amyloidosis is derived from immunoglobulin light-chains amyloid (AL). Primary, localized cutaneous nodular amyloidosis (PLCNA) is a form of primary, localized cutaneous amyloidosis that has been associated with a risk of progression to systemic amyloidosis. Read More

    β-amyloidopathy in the Pathogenesis of Age-Related Macular Degeneration in Correlation with Neurodegenerative Diseases.
    Adv Exp Med Biol 2016 ;854:119-25
    Department of Histology, Embryology, Cytology, Volgograd State Medical University, 49 Universitetskiy pr, app 149, 400011, Volgograd, Russia.
    Involvement of new biotechnology and genetic engineering methods to the study of the aging organism allowed to select a group of neurodegenerative diseases (NDD) which have a similar mechanism of pathogenesis including pathological processes of protein aggregation and its deposition in the structures of nerve tissue. The development of eye and brain from one embryonic germ layer, community of ethiopathogenetic and morphological manifestations of age-related macular degeneration (AMD) and Alzheimer's disease (AD), a common pathway of β-amyloid precursor protein (APP) are associated with the pathological aggregation of fibrillar β-amyloid (Aβ) protein and the development of β-amyloidopathy in structural elements of the eye and the brain. The review demonstrates the keynote of AMD and AD pathogenesis is β-amyloidopathy that is a manifestation of proteinopathy leading to cytotoxicity, neurodegeneration and the development of pathological apoptosis activated by the formation of intracellular Aβ. Read More

    RET mutation p.S891A in a Chinese family with familial medullary thyroid carcinoma and associated cutaneous amyloidosis binding OSMR variant p.G513D.
    Oncotarget 2015 Oct;6(32):33993-4003
    Department of Oncologic and Urology Surgery, the 117th PLA Hospital, Wenzhou Medical University, Hangzhou 310004, Zhejiang Province, China.
    There are no reports on the relationship between familial medullary thyroid carcinoma (FMTC) associated with cutaneous amyloidosis (CA) and RET or OSMR/IL31RA gene mutations. In this study, we investigated a Chinese family with FMTC/CA and found a recurrent RET c.2671T>G (p. Read More

    [Beta-amyloidopathy as a manifestation of proteinopathy in age-related macular degeneration].
    Vestn Oftalmol 2015 Mar-Apr;131(2):26-31
    Aim: To investigate clinical and morphological features of amyloidogenesis in age-related macular degeneration (AMD), which is thought to be associated with proteinopathy, namely beta-amyloidopathy.

    Material And Methods: A total of 111 eyes with morphological signs of AMD as well as brain samples from 56 cadavers (aged at death 60 and over) were assessed with selective methods of amyloid detection.

    Results: Amyloid deposits were present in 39% of eyes with dry AMD and 80% of eyes with wet AMD. Read More

    Efficacy of different modes of fractional CO2 laser in the treatment of primary cutaneous amyloidosis: A randomized clinical trial.
    Lasers Surg Med 2015 Jul 6;47(5):388-95. Epub 2015 May 6.
    Department of Histology, Kasr Al Ainy Hospital, Cairo University, Cairo, Egypt.
    Background: Primary cutaneous amyloidosis (PCA) comprises three main forms: macular, lichen, and nodular amyloidosis. The current available treatments are quite disappointing.

    Objectives: Assess and compare the clinical and histological changes induced by different modes of Fractional CO2 laser in treatment of PCA. Read More

    Currently Used Biologic Agents in the Management of Behcet's Syndrome.
    Curr Med Chem 2015 ;22(16):1976-85
    Cerrahpasa Tıp Fakultesi, Ic Hastalıklari Anabilim Dali, Romatoloji Bilim Dali, 34089, Cerrahpasa, Istanbul, Turkey.
    Behcet's s yndrome (BS) is a multisystem vasculitis with frequent mucocutaneous, joint, eye and visceral organ involvement. From early 2000s, biologic drugs have been increasingly used in the management of BS, enabling rapid and complete remission in most cases with critical organ involvement. Despite the current experience with steroids and traditional immunosuppressives, biologics are exceptionally promising for treatment of resistant cases. Read More

    Bullous variant of familial biphasic lichen amyloidosis: a unique combination of three rare presentations.
    Indian J Dermatol 2015 Jan-Feb;60(1):105
    Department of Pathology, J N Medical College, Belgaum, Karnataka, India.
    A 55-year-old man presented with multiple, itchy papules and macules on the trunk and extremities. Histopathologic examination of biopsy specimens taken from three different lesions showed a subepidermal blister with amyloid deposits in the dermal papillae. No systemic disease or involvement of other organs was detected. Read More

    Primary diffuse macular amyloidosis.
    Dermatol Online J 2015 Dec 16;21(12). Epub 2015 Dec 16.
    New York University School of Medicine.
    We present a 53-year-old woman with diffuse macular amyloidosis. We discuss the clinical manifestations, pathophysiologic mechanisms, and associations of cutaneous macular amyloidosis. Read More

    A familial poikiloderma-like cutaneous amyloidosis.
    Indian J Dermatol 2014 Nov;59(6):633
    Department of Dermatology, S. Nijlingappa Medical College, Bagalkot, Karnataka, India.
    Familial poikiloderma-like cutaneous amyloidosis(FPLCA) is a rare, generalized but genetic dyschromic skin disorder characterized by amyloid deposits in dermis due to defective DNA repair secondary to sunlight damage. Clinically, it presents with diffuse brownish pigmentation with hypo-pigmented macules and many brownish scattered lichenoid papules with normal developmental milestones. The condition is autosomal dominant with incomplete penetrance. Read More

    Macular and optic disc edema and retinal vascular leakage in familial amyloid polyneuropathy with a transthyretin Val30Met mutation: a case report.
    J Med Case Rep 2014 Oct 4;8:327. Epub 2014 Oct 4.
    Department of Ophthalmology of Central Lisbon Hospital Center, Lisbon, Portugal.
    Introduction: Familial amyloid polyneuropathy is a group of autosomal dominant disorders characterized by extracellular amyloid deposition in several target organs. This paper aims to report an unusual manifestation of retinal vascular leakage including optic disc and macular edema in a patient with familial amyloid polyneuropathy.

    Case Presentation: A 37-year-old Portuguese Caucasian man with Val30Met transthyretin-related familial amyloid polyneuropathy presented with rapidly progressing visual loss in his left eye. Read More

    An alternative treatment model: the combination therapy of narrow band ultraviolet B phototherapy and tacrolimus ointment 0.1% in biphasic amyloidosis.
    J Pak Med Assoc 2014 May;64(5):579-82
    Primary localized cutaneous amyloidosis (PLCA) is caused by the extracellular deposition of amyloid material in the skin without other cutaneous or systemic organ involvement. PCLA is classified into lichen, macular,and nodular amyloidosis. Macular amyloidosis and lichen amyloidosis are named as biphasic amyloidosis when they are concurrently seen in a patient. Read More

    Pulsed dye laser for the treatment of macular amyloidosis: a case report.
    Cutis 2014 Apr;93(4):189-92
    617 Center St, Ludlow, MA 01056, USA.
    Macular amyloidosis causes an eruption of brown pigment in the skin when keratin is altered. The resulting hyperpigmentation, which often leads to patient distress, generally has unsatisfactory treatment options. Among the treatment modalities that have been used for amyloidosis, the pulsed dye laser (PDL) has shown success in the treatment of nodular amyloidosis, and the Q-switched Nd:YAG laser has reduced the appearance of amyloid plaques in macular amyloidosis. Read More

    TGFBI, CHST6, and GSN gene analysis in Mexican patients with stromal corneal dystrophies.
    Graefes Arch Clin Exp Ophthalmol 2014 Aug 7;252(8):1267-72. Epub 2014 May 7.
    Department of Genetics-Research Unit, Institute of Ophthalmology "Conde de Valenciana", Mexico City, Mexico.
    Objectives: The purpose of our study was to describe the results of molecular screening of TGFBI, CHST6, and GSN genes in a group of Mexican patients with different stromal corneal dystrophies (CD).

    Material And Methods: A total of 16 CD Mexican patients pertaining to nine different pedigrees were subjected to a complete ophthalmological investigation. A clinical diagnosis of lattice CD was performed in 10 patients from five pedigrees. Read More

    Familial amyloidosis cutis dyschromica: a case report.
    Acta Med Iran 2014 ;52(2):163-5
    Department of Dermatology, Shahid Sadooghi University of Medical Sciences, Yazd, Iran.
    Amyloidosis cutis dyschromica (ACD) is a rare form of macular amyloidosis characterized by hypo and hyperpigmented macules. Here we described a 20 year old girl with diffuse hypo and hyperpigmentation since she was four years old. Five other members of her family are also involved. Read More

    Diffuse pigmentation of back and arms: macular amyloidosis or other?
    Acta Med Iran 2013 May 30;51(5):329-33. Epub 2013 May 30.
    Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran.
    The study was undertaken to answer the question that how many patients with pigmentation of back and arms actually have amyloid deposits in pathology. 44 patients presenting with diffuse pigmentation of back and arms (DPOBA) were selected. Skin biopsies were performed in all cases from the affected sites. Read More

    Clinicopathological correlation of acquired hyperpigmentary disorders.
    Indian J Dermatol Venereol Leprol 2013 May-Jun;79(3):367-75
    Department of Dermatology, Oregon Health Sciences University, Portland, Oregon, USA.
    Acquired pigmentary disorders are group of heterogenous entities that share single, most significant, clinical feature, that is, dyspigmentation. Asians and Indians, in particular, are mostly affected. Although the classic morphologies and common treatment options of these conditions have been reviewed in the global dermatology literature, the value of histpathological evaluation has not been thoroughly explored. Read More

    Transthyretin Ala36Pro mutation in a Chinese pedigree of familial transthyretin amyloidosis with elevated vitreous and serum vascular endothelial growth factor.
    Exp Eye Res 2013 May 21;110:44-9. Epub 2013 Feb 21.
    Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan Road, Dongcheng District, Beijing 100710, China.
    The familial transthyretin (TTR) amyloidosis (FTA) demonstrates variable penetrance of clinical features associated with mutations in the plasma thyroid hormone-binding protein TTR gene. The purpose of this study was to assess the ocular features, to analyze vitreous and serum vascular endothelial growth factor (VEGF) levels, and to identify the genetic defect in a Chinese family with TTR FTA. The pedigree of interest was a three-generation family with eleven members. Read More

    RNAi in clinical studies.
    Curr Med Chem 2013 ;20(14):1801-16
    Department of Technology and Biotechnology of Drugs, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland.
    RNA interference (RNAi) is an efficient process of posttranscriptional gene silencing. In recent years it has been developed into a new technology in biopharmaceutical fields of science. RNAi products include short interference RNA (siRNA) but also short hairpin RNA (shRNA), bifunctional short hairpin RNA (bi-shRNA) and microRNA (miRNA). Read More

    Study on epidemiology of cutaneous amyloidosis in northern India and effectiveness of dimethylsulphoxide in cutaneous amyloidosis.
    Indian Dermatol Online J 2012 Sep;3(3):182-6
    Department of Skin and VD, Subharti Medical College, India.
    Context: Amyloidosis, which is characterized by the extracellular deposition of a proteinaceous substance, is usually associated with considerable tissue dysfunction. However, the etiology of the disease remains uncertain and the treatment disappointing.

    Aim: 1. Read More

    A clinico-epidemiological study of macular amyloidosis from north India.
    Indian J Dermatol 2012 Jul;57(4):269-74
    Behl Skin Institute and School of Dermatology, Zamrudpur, Greater Kailash-I, New Delhi, India.
    Background: Macular amyloidosis (MA) is the most subtle form of cutaneous amyloidosis, characterized by brownish macules in a rippled pattern, distributed predominantly over the trunk and extremities. MA has a high incidence in Asia, Middle East, and South America. Its etiology has yet to be fully elucidated though various risk factors such as sex, race, genetic predisposition, exposure to sunlight, atopy and friction and even auto-immunity have been implicated. Read More

    Primary cutaneous amyloidosis: a clinico-pathological study with emphasis on polarized microscopy.
    Indian J Pathol Microbiol 2012 Apr-Jun;55(2):170-4
    Department of Pathology, JSS Medical College (constituent college of JSS University), Mysore, Karnataka, India.
    Background: Primary localized cutaneous amyloidosis (PCA) is a relatively rare condition characterized by amyloid deposition in dermis without systemic involvement. Although, histopathological examination of the lesion reveals amorphous eosinophilic deposits in papillary dermis examination of congo red stained slides under polarized light will give definitive diagnosis

    Aims: To study the clinicopathological features of cutaneous amyloidosis emphasizing the utility of polarized light in diagnosis.

    Materials And Methods: A clinicopathological study of primary cutaneous amyloidosis over a period of 8 years was undertaken. Read More

    Characteristic dermoscopic features of primary cutaneous amyloidosis: a study of 35 cases.
    Br J Dermatol 2012 Sep;167(3):548-54
    Department of Dermatology, Taipei Veterans General Hospital, Taipei, Taiwan.
    Background: Primary cutaneous amyloidosis (PCA) is a relatively common skin disorder among Asians and South Americans. It is usually diagnosed clinically. However, for cases with atypical presentations, the diagnosis can be a challenge and skin biopsy may be necessary. Read More

    An unusual presentation of macular amyloidosis.
    An Bras Dermatol 2011 Jul-Aug;86(4 Suppl 1):S24-7
    Centro de Dermatologia Dona Libânia, Fortaleza, CE, Brasil.
    Macular amyloidosis is a form of cutaneous amyloidosis characterized by dusky-brown lesions usually located on the upper back between the shoulder blades. This report describes the case of a 45 year-old female presenting with hyperpigmented macules and lace-like, non-pruritic erythema in the sacral and cervical region as well as on both arms and legs. Histology revealed amyloid deposits in the papillary dermis which exhibited apple-green birefringence after Congo red staining. Read More

    Extensive fibrin accumulation and accompanying epithelial changes in the pathogenesis of ligneous mucosal disease (ligneous periodontitis).
    Am J Dermatopathol 2012 Feb;34(1):35-40
    Department of Pathology, Gülhane Military Medical Academy, Ankara, Turkey.
    Certain abnormal products of human tissues are resistant to degradation. The fibrillary ultrastructure of some of these are seen integrated with normal tissue components. The accumulations seen in colloid milium, lichen, and macular amyloidosis are of this type. Read More

    Case of primary localized cutaneous amyloidosis with protean clinical manifestations: lichen, poikiloderma-like, dyschromic and bullous variants.
    J Dermatol 2011 Nov 20;38(11):1066-71. Epub 2011 Sep 20.
    National Skin Centre, Singapore, Singapore.
    Primary localized cutaneous amyloidosis (PLCA) commonly presents as macular and lichen variants. We present a case of a 27-year-old Chinese woman with cutaneous features of the rarely reported poikiloderma-like, dyschromic and bullous forms of PLCA, and the commoner lichen variant. There were no syndromic associations or systemic involvement, and the various morphological subtypes occurred in isolation from one another. Read More

    Transcutaneous electrical nerve stimulation for reduction of pruritus in macular amyloidosis and lichen simplex.
    J Dermatol 2011 Jun 31;38(6):546-52. Epub 2011 Jan 31.
    Departments of Dermatology Medical History and Deontology Biostatistics, Gaziosmanpasa University School of Medicine, Tokat, Turkey.
    Lichen simplex (LS) is characterized by circumscribed, lichenified, pruritic patches that may develop on any part of the body. Macular amyloidosis (MA) is the form of primary localized cutaneous amyloidosis. Transcutaneous electrical nerve stimulation (TENS) uses a pulsed electric current generated transcutaneously by a device to cause impulses to be carried along large-diameter afferent nerves. Read More

    Clinical effect of tocoretinate on lichen and macular amyloidosis.
    J Dermatol 2011 Feb 29;38(2):179-84. Epub 2010 Sep 29.
    Department of Dermatology, Graduate School of Medicine, Osaka University, Osaka, Japan.
    Lichen amyloidosis and macular amyloidosis are commonly therapy-resistant. Tocoretinate is a hybrid compound of retinoic acid and tocopherol that is commonly used for the treatment of skin ulcers. Although beneficial effect of oral retinoic acid on lichen amyloidosis is reported, tocoretinate has not been reported to be useful for the treatment of lichen amyloidosis or macular amyloidosis. Read More

    Novel CHST6 gene mutations in 2 unrelated cases of macular corneal dystrophy.
    Cornea 2011 Jun;30(6):664-9
    Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St Louis, MO 63110, USA.
    Purpose: To investigate the possible mutations in the carbohydrate sulfotransferase 6 (CHST6) gene of 2 unrelated cases of macular corneal dystrophy (MCD) and to report atypical stromal deposits in one of them.

    Methods: Corneal tissues were stained with antisulfated keratan sulfate (KS), antitransforming growth factor beta 1-induced protein (TGFBIp), thioflavin-T, alcian blue, and Masson trichrome. Sequencing was performed to identify potential mutations in the CHST6 gene and the fourth and twelfth exons of the TGFBI gene. Read More

    Lichen amyloidosis in a dark skinned patient.
    G Ital Dermatol Venereol 2010 Feb;145(1):135-8
    Department of Dermatology, University of Catania, G. Rodolico Polyclinic, Catania, Italy.
    Lichen amyloidosis is a primary localized cutaneous amyloidosis without systemic involvement, characterized by a persistent pruritic eruption of multiple discrete hyperkeratotic papules. The etiology is unknown, but chronic irritation of the skin has been proposed as an etiological factor. We herein report a typical case of lichen amyloidosis in a dark skinned patient. Read More

    New insight into mechanisms of pruritus from molecular studies on familial primary localized cutaneous amyloidosis.
    Br J Dermatol 2009 Dec 26;161(6):1217-24. Epub 2009 May 26.
    St John's Institute of Dermatology, King's College London (Guy's Campus), London, U.K.
    Macular and lichen amyloidosis are common variants of primary localized cutaneous amyloidosis (PLCA) in which clinical features of pruritus and skin scratching are associated with histological findings of deposits of amyloid staining on keratinous debris in the papillary dermis. Most cases are sporadic, but an autosomal dominant family history may be present in up to 10% of cases, consistent with a genetic predisposition in some individuals. Familial PLCA has been mapped to a locus on 5p13. Read More

    Lack of evidence for OSMR and RET gene mutations in a Chinese family with friction melanosis.
    Clin Exp Dermatol 2010 Apr 6;35(3):282-6. Epub 2009 Jul 6.
    Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.
    Background: Friction melanosis (FM) is a common dermatological disorder. Although cases have been reported, familial FM is rare. FM and macular amyloidosis (MA) have been hypothesized to be identical clinical conditions, and cutaneous lichen amyloidosis (CLA) is linked to mutations in the OSMR (oncostatin M receptor) or RET (receptor tyrosine kinase) genes. Read More

    Familial primary localized cutaneous amyloidosis in Brazil.
    Arch Dermatol 2009 Jun;145(6):695-9
    Department of Dermatology, Federal University of Mato Grosso do Sul, Campo Grande, Brazil.
    Background: Macular and lichen amyloidosis are clinical variants of primary localized cutaneous amyloidosis (PLCA). Most cases are sporadic, but approximately 10% of cases may be familial. To our knowledge, the clinicopathologic and molecular features of such pedigrees, however, have not been studied in detail. Read More

    Hypopigmented macular amyloidosis with or without hyperpigmentation.
    Clin Exp Dermatol 2009 Dec;34(8):e547-51
    Department of Dermatology, National Skin Centre, Singapore.
    Primary cutaneous amyloidosis (PCA) is a chronic pruritic skin disorder with characteristic amyloid deposits in the papillary dermis. We report three cases of PCA, which shared common features of hypopigmentation as a predominant feature with or without reticular hyperpigmentation, no itching, adult onset and dermal papillary amyloid deposition. These cases did not conform to the usual features of PCA. Read More

    Primary localized cutaneous amyloidosis: a sign of immune dysregulation?
    Int J Dermatol 2009 Apr;48(4):419-21
    Department of Dermatology, American University of Beirut Medical Center, Beirut, Lebanon.
    The manifestations of primary localized cutaneous amyloidosis (PLCA) are usually limited to the skin. The exact etiopathogenesis of PLCA has not been clearly elucidated yet. An increasing number of reports in the literature that associate PLCA with various autoimmune/immune disorders suggest that underlying immune-mediated factors may be implicated. Read More

    [Histopathological findings of primary cutaneous lichenoid and macular amyloidosis].
    Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2009 Feb;31(1):31-3
    Department of Dermatology, Peking University Third Hospital, Beijing 100083, China.
    Objective: To investigate the histopathological findings of primary cutaneous lichenoid amyloidosis (LA) and macular amyloidosis (MA).

    Methods: The pathological features of 82 patients with primary cutaneous amyloidosis (PCA) admitted from 2003 to 2008 were summarized.

    Results: There were 52 cases (63%) of LA and 30 cases (37%) of MA, among which 49 cases (60%) presented with pyknotic nucleus of the basal keratinocytes above the amyloid in the upper dermis and 18 cases (22%) presented with pagetoid dyskeratosis (PD) cells among their prickle cells. Read More

    Lichen amyloidosis induced on the upper back by long-term friction with a nylon towel.
    J Dermatol 2009 Jan;36(1):56-9
    Department of Dermatology, Iwate Medical University School of Medicine, Morioka, Japan.
    Primary localized cutaneous amyloidosis can take several clinical forms. In Asia, macular amyloidosis caused by prolonged friction from a rough nylon towel or brush is common, and macular amyloidosis and lichen amyloidosis occasionally occur together, as so-called biphasic amyloidosis. We report herein the case of an 83-year-old Japanese man with lichen amyloidosis caused by prolonged nylon towel friction. Read More

    [Disseminated nodular primary localized cutaneous amyloidosis].
    Actas Dermosifiliogr 2008 Oct;99(8):648-52
    Servicio de Dermatología, Hospital Universitario La Paz, Madrid, España.
    Amyloid is a proteinaceous material that is deposited in the tissues in a large variety of clinical contexts; in the skin it can be found with or without concomitant systemic disease. Primary localized cutaneous amyloidosis encompasses those amyloidoses restricted to the skin without involvement of other systems. The most common forms within this group are macular and lichen amyloidosis. Read More

    Macular amyloidosis: a case report.
    Acta Dermatovenerol Croat 2008 ;16(3):138-41
    University Department of Dermatology and Venereology, Zagreb University Hospital Center and School of Medicine, Salata 4, Zagreb, Croatia.
    Macular amyloidosis is a major cause of skin pigmentation and a rare form of localized primary cutaneous amyloidosis in western countries, with a higher prevalence in Asia and South America. The etiopathogenesis of macular amyloidosis has not yet been fully clarified; a number of risk factors are involved, among them chronic friction in particular. A 54-year-old patient with macular amyloidosis is presented. Read More

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