34,082 results match your criteria lesions initial

Elastic tissue disruption is a major pathogenic factor to human vascular disease.

Mol Biol Rep 2021 Jun 15. Epub 2021 Jun 15.

Nephrology Division, Internal Medicine Department, Hospital General Juan Cardona, c/ Pardo Bazán s/n, 15406, Ferrol, Spain.

Elastic fibers are essential components of the arterial extracellular matrix. They consist of the protein elastin and an array of microfibrils that support the protein and connect it to the surrounding matrix. The elastin gene encodes tropoelastin, a protein that requires extensive cross-linking to become elastin. Read More

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COVID-19-associated myoclonus in a series of five critically ill patients.

Wien Klin Wochenschr 2021 Jun 15. Epub 2021 Jun 15.

4th Medical Division for Infectious Disease Medicine and Tropical Medicine, Klinik Favoriten, Pav. C, Kundtratstr. 3, 1100, Vienna, Austria.

Background: In addition to respiratory symptoms, many patients with coronavirus disease 2019 (COVID-19) present with neurological complications. Several case reports and small case series described myoclonus in five patients suffering from the disease. The purpose of this article is to report on five critically ill patients with COVID-19-associated myoclonus. Read More

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Caseous calcification of the mitral annulus mimicking benign cardiac tumour of the mitral valve.

Cardiovasc J Afr 2021 May 7;32:1-4. Epub 2021 May 7.

Echocardiography and Vascular Ultrasound Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China. Email:

Caseous calcification of the mitral annulus (CCMA) is a rare subtype of mitral annular calcification. It usually appears as a large, round, mass-like calcification with an echolucent core, which may be misdiagnosed as an intracardiac mass, cyst, thrombus or abscess of the mitral valve. We present a case report of CCMA that was misdiagnosed by echocardiography as a benign tumour due to its atypical imaging. Read More

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Complete circumferential lymphadenectomy around the superior mesenteric artery with preservation of nerve plexus reduces locoregional recurrence after pancreatoduodenectomy for resectable pancreatic ductal adenocarcinoma.

Eur J Surg Oncol 2021 Jun 8. Epub 2021 Jun 8.

Second Department of Surgery, Wakayama Medical University, School of Medicine, Japan.

Background: Evaluation of recurrence pattern and risk factors for recurrence are essential for good rates of survival after upfront pancreatoduodenectomy (PD) for pancreatic ductal adenocarcinoma (PDAC).

Methods: This retrospective study included 167 consecutive patients who underwent upfront PD for resectable PDAC between 2000 and 2018. Postoperative recurrences were classified into three patterns according to initial recurrence site: isolated locoregional, isolated distant, and simultaneous locoregional and distant recurrences. Read More

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Sequential everolimus for angiomyolipoma associated with tuberous sclerosis complex: a prospective cohort study.

Orphanet J Rare Dis 2021 Jun 14;16(1):277. Epub 2021 Jun 14.

Department of Urology, the Third Medical Centre, Chinese PLA General Hospital, 69 Yong Ding Road, Beijing, 100039, China.

Background: To evaluate the efficacy, safety and health economics of sequential everolimus in treating angiomyolipoma (AML) associated with tuberous sclerosis complex (TSC).

Methods: In this prospective cohort study, patients met the inclusion criteria received standard or sequential treatment according to their willingness. All patients received an initial dose of everolimus (10 mg oral, once a day) for 3 months. Read More

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Visual or visual-tactile examination to detect and inform the diagnosis of enamel caries.

Cochrane Database Syst Rev 2021 Jun 14;6:CD014546. Epub 2021 Jun 14.

Dundee Dental School, University of Dundee, Dundee, UK.

Background: The detection and diagnosis of caries at the initial (non-cavitated) and moderate (enamel) levels of severity is fundamental to achieving and maintaining good oral health and prevention of oral diseases. An increasing array of methods of early caries detection have been proposed that could potentially support traditional methods of detection and diagnosis. Earlier identification of disease could afford patients the opportunity of less invasive treatment with less destruction of tooth tissue, reduce the need for treatment with aerosol-generating procedures, and potentially result in a reduced cost of care to the patient and to healthcare services. Read More

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Image-Guided Robotic Radiosurgery for the Treatment of Same Site Spinal Metastasis Recurrences.

Front Oncol 2021 28;11:642314. Epub 2021 May 28.

European Cyberknife Center, Munich, Germany.

Background: Due to recent medical advancements, patients suffering from metastatic spinal disease have a prolonged life expectancy than several decades ago, and some will eventually experience relapses. Data for the retreatment of spinal metastasis recurrences occurring at the very same macroscopic spot as the initially treated lesion are limited. Previous studies mainly included recurrences in the boundary areas as well as other macroscopic parts of the initially affected vertebrae. Read More

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Stereotactic MR-guided online adaptive radiotherapy reirradiation (SMART reRT) for locally recurrent pancreatic adenocarcinoma: A case report.

Med Dosim 2021 Jun 10. Epub 2021 Jun 10.

Department of Radiation Oncology, Miami Cancer Institute, Baptist Health South Florida, Miami, FL 33176, USA; Herbert Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA. Electronic address:

Introduction: Stereotactic MR-guided online adaptive radiation therapy (SMART) has demonstrated a superior radiotherapeutic ratio for pancreatic patients, by enabling dose escalation while minimizing the dose to the proximal gastrointestinal organs at risk through online adaptive radiotherapy. The safe delivery of stereotactic body radiation therapy (SBRT) is of particular importance in the reirradiation setting and has been historically limited to CT-based nonadaptive modalities. Herein, we report the first use of online adaptive radiotherapy in the reirradiation setting, specifically for treatment of locally recurrent pancreatic adenocarcinoma through SMART reirradiation (SMART reRT). Read More

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Rapid, quantitative prediction of tumor invasiveness in non-melanoma skin cancers using mechanobiology-based assay.

Biomech Model Mechanobiol 2021 Jun 12. Epub 2021 Jun 12.

Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, 3200003, Haifa, Israel.

Non-melanoma skin cancers, including basal and squamous cell carcinomas (BCC and SCC), are the most common malignancies worldwide. BCC/SCC cancers are generally highly localized and can be surgically excised; however, invasive tumors may be fatal. Current diagnosis of skin cancer and prognosis of potential invasiveness are based mainly on clinical-pathological factors of the biopsied lesions. Read More

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Focal unspecific bone uptake on [F]-PSMA-1007 PET: a multicenter retrospective evaluation of the distribution, frequency, and quantitative parameters of a potential pitfall in prostate cancer imaging.

Eur J Nucl Med Mol Imaging 2021 Jun 13. Epub 2021 Jun 13.

Department of Radiology and Nuclear Medicine, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.

Purpose: Improved logistics and availability led to a rapid increase in the use of [F]-PSMA-1007 for prostate cancer PET imaging. Initial data suggests increased uptake in benign lesions compared to [ Ga]-PSMA-11, and clinical observations found increased unspecific bone uptake (UBU). We therefore investigate the frequency and characteristics of UBU in [F]-PSMA-1007 PET. Read More

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MIDeepSeg: Minimally interactive segmentation of unseen objects from medical images using deep learning.

Med Image Anal 2021 May 18;72:102102. Epub 2021 May 18.

School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, China; SenseTime Research, Shanghai, China.

Segmentation of organs or lesions from medical images plays an essential role in many clinical applications such as diagnosis and treatment planning. Though Convolutional Neural Networks (CNN) have achieved the state-of-the-art performance for automatic segmentation, they are often limited by the lack of clinically acceptable accuracy and robustness in complex cases. Therefore, interactive segmentation is a practical alternative to these methods. Read More

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Pediatric contrast-enhanced ultrasound: shedding light on the pursuit of approval in the United States.

Pediatr Radiol 2021 Jun 11. Epub 2021 Jun 11.

Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, USA.

For two decades, pediatric contrast US has been well accepted throughout Europe and other parts of the world outside the United States because of its high diagnostic efficacy and extremely favorable safety profile. This includes intravenous (IV) administration, contrast-enhanced US (CEUS) and the intravesical application, contrast-enhanced voiding urosonography (ceVUS). However, the breakthrough for pediatric contrast US in the United States did not come until 2016, when the U. Read More

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Radiosurgery as a microsurgical adjunct: outcomes after microsurgical resection of intracranial arteriovenous malformations previously treated with stereotactic radiosurgery.

J Neurosurg 2021 Jun 11:1-12. Epub 2021 Jun 11.

1Department of Neurosurgery and Stanford Stroke Center, Stanford University Medical Center, Stanford.

Objective: Microsurgical resection of arteriovenous malformations (AVMs) can be aided by staged treatment consisting of stereotactic radiosurgery followed by resection in a delayed fashion. This approach is particularly useful for high Spetzler-Martin (SM) grade lesions because radiosurgery can reduce flow through the AVM, downgrade the SM rating, and induce histopathological changes that additively render the AVM more manageable for resection. The authors present their 28-year experience in managing AVMs with adjunctive radiosurgery followed by resection. Read More

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Lateral Elbow Laxity Is Affected by the Integrity of the Radial Band of the Lateral Collateral Ligament Complex: A Cadaveric Model With Sequential Releases and Varus Stress Simulating Everyday Activities.

Am J Sports Med 2021 Jun 11:3635465211018208. Epub 2021 Jun 11.

UOC 1° Clinica Ortopedica, ASST Centro Specialistico Ortopedico Traumatologico Gaetano Pini-CTO, Milan, Italy.

Background: An elongation of the radial lateral collateral complex (R-LCL) can provoke symptomatic minor instability of the lateral elbow leading to lateral elbow pain. Biomechanical models investigating the effects of elongation and partial or complete lesions of the R-LCL on lateral elbow stability are lacking.

Purpose: To evaluate how partial and complete R-LCL release affects radiocapitellar joint stability in a setting of controlled varus load and progressive soft tissue release. Read More

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Diffusion-weighted MRI and PET/CT reproducibility in epithelial ovarian cancers during neoadjuvant chemotherapy.

Diagn Interv Imaging 2021 Jun 7. Epub 2021 Jun 7.

Department of nuclear medicine, Institut Bergonié, Comprehensive Cancer Center of Nouvelle-Aquitaine, 33000 Bordeaux, France.

Purpose: To investigate the reproducibility of diffusion-weighted (DW) MRI and F-Fluorodeoxyglucose (F-FDG)-Positron emission tomography/CT (PET/CT) in monitoring response to neoadjuvant chemotherapy in epithelial ovarian cancer.

Materials And Methods: Ten women (median age, 67 years; range: 41.8-77. Read More

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Longitudinal assessment of PD-L1 expression and gene expression profiles in patients with head and neck cancer reveals temporal heterogeneity.

Oral Oncol 2021 Jun 7;119:105368. Epub 2021 Jun 7.

Department of Medical Oncology, Centre Léon Bérard, Lyon, France; Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon 69008, France. Electronic address:

Background: Programmed death-ligand 1 (PD-L1) is the most validated predictive biomarker used for the treatment of head and neck squamous cell carcinoma (HNSCC) with immune checkpoint inhibitors (ICI). Several gene expression-based signatures surrogate of the activation of IFN-gamma pathway and of the presence of tertiary lymphoid structures (TLS) have also been proposed as potential biomarkers. While they may have a potential therapeutic implication, the longitudinal changes of either PD-L1 or gene expression profiles between the initial and recurrent HNSCC lesions is unknown. Read More

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New-onset seizures in adults: Low diagnostic yield of gadolinium contrast in initial brain MRI evaluation.

J Neuroimaging 2021 Jun 10. Epub 2021 Jun 10.

Department of Radiology, University of Colorado Hospital, Aurora, Colorado, USA.

Background And Purpose: The diagnostic utility of contrast MR-imaging in adult new-onset seizures without clinically suspected neoplasia or infection is not well defined in the literature. Imaging guidelines consider both contrast and noncontrast MR-imaging examinations appropriate in this clinical scenario. The purpose of this study was to evaluate the utility of contrast MR-sequences in evaluation of seizure in patients without suspicion for neoplasia or infection. Read More

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Hypoxia-inducible exosomes facilitate liver-tropic pre-metastatic niche in colorectal cancer.

Hepatology 2021 Jun 10. Epub 2021 Jun 10.

Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009, China.

Background & Aims: Liver metastasis is a frequent occurrences in patients with colorectal cancer (CRC), 15%-25% of CRC patients have liver metastases at the time of initial diagnosis (1). Specifically, some regional-stage patients with mild symptoms (stage Ⅰ or II) will also advance to liver metastases rapidly, even CRC lesion in situ is resected in time. Nevertheless, the precise mechanism of liver metastasis is still unclear. Read More

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A unique case of adamantinoma-like Ewing sarcoma in the calcaneus, exhibiting prominent squamous differentiation and displaying EWSR1 gene rearrangement.

Skeletal Radiol 2021 Jun 10. Epub 2021 Jun 10.

Sparsh Orthopedic Oncology, Ahmedabad, Gujrat, India.

Adamantinoma-like Ewing sarcoma is uncommonly reported in the skeletal sites, including small bones of the feet.A 15-year-old girl presented with pain and swelling in her left foot, leading to difficulty in walking for 8 months. Plain radiograph revealed an ill-defined, lytic-sclerotic lesion without significant periosteal reaction in her left calcaneus. Read More

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Novel Affibody Molecules Targeting the HPV16 E6 Oncoprotein Inhibited the Proliferation of Cervical Cancer Cells.

Front Cell Dev Biol 2021 24;9:677867. Epub 2021 May 24.

Department of Microbiology and Immunology, Institute of Molecular Virology and Immunology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China.

Despite prophylactic vaccination campaigns, high-risk human papillomavirus (HPV)-induced cervical cancer remains a significant health threat among women, especially in developing countries. The initial occurrence and consequent progression of this cancer type primarily rely on, E6 and E7, two key viral oncogenes expressed constitutively, inducing carcinogenesis. Thus, E6/E7 have been proposed as ideal targets for HPV-related cancer diagnosis and treatment. Read More

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Case report of osteolytic lesions in a patient with multisystem granulomatous disease.

BMJ Case Rep 2021 Jun 9;14(6). Epub 2021 Jun 9.

School of Medicine, University of Notre Dame, Fremantle, Western Australia, Australia.

We present a case of a 70-year-old Caucasian woman with multisystem granulomatous disease involving her lungs, bones and lymph nodes. The patient initially presented with cervical lymphadenopathy and subsequently developed progressive breathlessness. Imaging revealed extensive mediastinal, hilar and intra-abdominal lymphadenopathy as well as bilateral pulmonary parenchymal infiltrates. Read More

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Blastic plasmacytoid dendritic cell neoplasm of the breast: A case report and review of the literature.

Medicine (Baltimore) 2021 May;100(19):e25699

Department of Radiology.

Rationale: Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is an uncommon and aggressive hematologic malignancy that arises from plasmacytoid dendritic cells. BPDCN typically presents with skin lesions with or without involvement of lymph nodes, peripheral blood, or bone marrow. However, breast involvement of BPDCN is rare and there has been no report describing the radiologic features of BPDCN within breast parenchyma. Read More

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Novel strategy to treat lung metastases: Hybrid therapy involving surgery and radiofrequency ablation.

Thorac Cancer 2021 Jun 9. Epub 2021 Jun 9.

Department of Diagnostic and Interventional Radiology, Aichi Cancer Center Hospital, Nagoya, Japan.

Background: This study was performed to evaluate the clinical outcomes of hybrid treatment involving surgical resection and percutaneous radiofrequency ablation for patients with multiple lung metastases.

Methods: Seventeen patients (6 men, 11 women; median age, 52 years; range, 16-78 years) underwent hybrid treatment involving surgery and radiofrequency ablation to treat multiple lung metastases (median number, 4; range, 2-26) between May 2014 and February 2020. The primary lesions were colorectal carcinoma (n = 9), uterine endometrial carcinoma (n = 3), osteosarcoma (n = 2), renal cell carcinoma (n = 1), glottic carcinoma (n = 1), and fibrolamellar hepatocellular carcinoma (n = 1). Read More

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The effect of Remin Pro on the microhardness of initial enamel lesions in primary teeth: An study.

Dent Res J (Isfahan) 2021 17;18:16. Epub 2021 Mar 17.

Department of Pediatric Dentistry, Zahedan University of Medical Sciences, Zahedan, Iran.

Background: Remineralization is currently considered a treatment option for many clinicians. The present study was conducted to compare the effect of three remineralizing agents on microhardness of initial caries lesions in primary teeth.

Materials And Methods: In this study, 96 enamel samples were prepared. Read More

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Nonrestorative treatment of initial caries lesion in primary teeth: a systematic review and network meta-analysis.

Acta Odontol Scand 2021 Jun 8:1-8. Epub 2021 Jun 8.

Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Sao Paulo, São Paulo, SP, Brazil.

Objective: To identify the best available approach to avoid initial caries lesions progression in primary teeth.

Materials And Methods: Search was performed in MEDLINE/Pubmed, Web of Science, Embase and CENTRAL databases until March 2021. Studies compared treatment options to avoid the initial caries lesion progression with at least 12 months of follow-up were included. Read More

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Effectiveness of percutaneous vacuum-assisted excision (VAE) of breast lesions of uncertain malignant potential (B3 lesions) as an alternative to open surgical biopsy.

Eur Radiol 2021 Jun 8. Epub 2021 Jun 8.

Department of Histopathology, Nottingham University Hospitals NHS Trust, Nottingham City Hospital Hucknall Road, Nottingham, NG51PB, UK.

Objectives: Traditionally B3 breast lesions are treated surgically, but overtreatment is a concern, as the majority have a final benign diagnosis. A national screening program introduced vacuum-assisted excision (VAE) for managing B3 lesions in late 2016. This retrospective study aimed to assess the outcomes associated with this approach. Read More

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Acute arthritis, skin rash and Lofgren's syndrome.

BMJ Case Rep 2021 Jun 7;14(6). Epub 2021 Jun 7.

Department of Radiotherapy and Oncology, IGMC, Shimla, Himachal Pradesh, India.

Sarcoidosis is an autoimmune multisystem granulomatous disorder of unknown aetiology, which mainly affects the adults in the age group of 20-39 years. The disease can affect any organ in the body but mainly presents as bilateral hilar lymphadenopathy, pulmonary infiltrates, cutaneous lesions, ocular manifestations and arthropathy. Lofgren's syndrome is an uncommon initial presentation of sarcoidosis which is recognised by the classical triad of acute arthritis, erythema nodosum and bilateral hilar lymphadenopathy. Read More

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Cutaneous Manifestations of COVID-19: Characteristics, Pathogenesis, and the Role of Dermatology in the Pandemic.

Cutis 2021 Apr;107(4):209-215

Drs. Alam, Lewis, Steele, Rosenbach, and Micheletti are from the Department of Dermatology, University of Pennsylvania, Philadelphia. Dr. Harp is from New York-Presbyterian/Weill Cornell Medical Center, New York.

Cutaneous manifestations of COVID-19-SARS-CoV-2-are common and varied. Morbilliform, vesicular, and urticarial eruptions may be nonspecific initial features of the disease. Chilblainlike lesions on the fingers or toes typically occur as part of a resolution phase, signifying a milder course, whereas livedoid lesions and retiform purpura are associated with coaguloapthy and more severe disease. Read More

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Cochlear apical morphology in toothed whales: Using the pairing hair cell-Deiters' cell as a marker to detect lesions.

Anat Rec (Hoboken) 2021 Jun 7. Epub 2021 Jun 7.

Department of Zoology, The University of British Columbia, Vancouver, British Columbia, Canada.

The apex or apical region of the cochlear spiral within the inner ear encodes for low-frequency sounds. The disposition of sensory hair cells on the organ of Corti is largely variable in the apical region of mammals, and it does not necessarily follow the typical three-row pattern of outer hair cells (OHCs). As most underwater noise sources contain low-frequency components, we expect to find most lesions in the apical region of the cochlea of toothed whales, in cases of permanent noise-induced hearing loss. Read More

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The Sulfation Code of Tauopathies: Heparan Sulfate Proteoglycans in the Prion Like Spread of Tau Pathology.

Front Mol Biosci 2021 20;8:671458. Epub 2021 May 20.

Department of Biological Sciences, Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States.

Tauopathies are a heterogenous family of progressive neurodegenerative diseases defined by the appearance of proteinaceous lesions within the brain composed of abnormally folded species of Microtubule Associated Protein Tau (tau). Alzheimer's Disease (AD), the most common tauopathy, is the leading cause of cognitive decline among the elderly and is responsible for more than half of all cases of senile dementia worldwide. The characteristic pathology of many tauopathies-AD included-presents as Neurofibrillary Tangles (NFTs), insoluble inclusions found within the neurons of the central nervous system composed primarily of tau protein arranged into Paired Helical Fibrils (PHFs). Read More

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