8,213 results match your criteria histopathologic evaluation

Postoperatively determined high-risk histopathologic features in papillary thyroid carcinoma initially eligible for thyroid lobectomy: a game changer.

Endocrine 2021 Jun 10. Epub 2021 Jun 10.

Department of Surgical, Medical, Pathology, and Critical Care, The University of Pisa, Pisa, 56124, Italy.

Purpose: Recent clinical practice guidelines consider thyroid lobectomy a viable alternative for low-risk papillary thyroid carcinoma PTC measuring 1-4 cm in size. We aimed to assess the likelihood of finding postoperatively determined high-risk histopathologic features that would lead to the recommendation of completion thyroidectomy.

Methods: A retrospective review of patients who underwent total thyroidectomy for PTC measuring 1-4 cm in size between Jan 2012 and Jan 2018 was conducted. Read More

View Article and Full-Text PDF

Migrated Bulking Material (Solesta) Presenting as a Vaginal "Cyst": Histopathologic and Chemical Analytical Features.

Int J Gynecol Pathol 2021 Jun 9. Epub 2021 Jun 9.

Long School of Medicine, University of Texas Health Science Center at San Antonio (C.S.Z.) Departments of Dermatology & Pathology, San Antonio Military Medical Center (W.E.W.), San Antonio, Texas Department of Dermatology, United States Air Force Academy, Colorado Springs, CO (R.N.M.) The Joint Pathology Center, Silver Spring, Maryland (M.L.S., S.S.).

Performing injections with a bulking agent consisting of nonanimal stabilized hyaluronic acid and dextranomer is a well-tolerated and efficacious treatment for mild to moderate fecal incontinence. Here, we discuss a case of a patient with a history of a bulking procedure for fecal incontinence who presented to the obstetrics/gynecology clinic for evaluation of a new vaginal "cyst," which was excised. Histopathologic examination revealed migrated bulking agent within the excised specimen. Read More

View Article and Full-Text PDF

Evaluation of OTL38-Generated Tumor-to-Background Ratio in Intraoperative Molecular Imaging-Guided Lung Cancer Resections.

Mol Imaging Biol 2021 Jun 8. Epub 2021 Jun 8.

Department of Thoracic Surgery, University of Pennsylvania Perelman School of Medicine, 3400 Spruce Street, 6 White Building, Philadelphia, PA, 19104, USA.

Introduction: Cancer surgery has multiple challenges including localizing small lesions, ensuring negative margins, and identifying synchronous cancers. One of the tools proposed to address these issues is intraoperative molecular imaging (IMI). An important consideration in IMI is the quantification of the tumor fluorescence during the procedure and using that data to add clinical value. Read More

View Article and Full-Text PDF

Tumor grade estımatıon of clear cell and papıllary renal cell carcınomas usıng contrast-enhanced MDCT and FSE T2 weıghted MR ımagıng: radıology-pathology correlatıon.

Radiol Med 2021 Jun 7. Epub 2021 Jun 7.

Department of Radiology and Pathology, 34371, Sisli, Istanbul, Turkey.

Background: Discrimination of low grade (grade 1-2) renal tumors from high grade (grade 3-4) ones carries crucial importance in terms of the management of these patients and also in the decision-making of appropriate treatment strategies. Our aim was to investigate whether contrast-enhanced multidetector computed tomography (MDCT) and T2 weighted fast spin echo (FSE) magnetic resonance imaging (MRI) could play a specific role in the discrimination of low grade versus high grade tumors in clear cell renal cell carcinoma (ccRCC) and papillary renal cell carcinoma (pRCC) patients.

Methods: In this study, we retrospectively evaluated 66 RCC patients based on histopathologic findings who had underwent either partial or total nephrectomies. Read More

View Article and Full-Text PDF

Monascus ruber fermented Panax ginseng ameliorates lipid metabolism disorders and modulate gut microbiota in rats fed a high-fat diet.

J Ethnopharmacol 2021 Jun 4:114300. Epub 2021 Jun 4.

School of Chinese Materia Medica, Beijing University of Chinese Medicine, Yangguang South Street, Fangshan 102488, Beijing, China; Key Laboratory for Production Process Control and Quality Evaluation of Traditional Chinese Medicine, Beijing Municipal Science & Technology Commission, Beijing 100029. Electronic address:

Ethnopharmacological Relevance: Ginseng (Panax ginseng Meyer) is rich in a variety of biologically active ingredients, which shows good effect in the treatment of metabolic diseases. Monascus has lipid-lowering activity and one of its metabolites, lovastatin, is widely used in clinical practice.

Aim Of The Study: The main purpose of this study was to clarify the effects of fermented Panax ginseng by Monascus ruber (PM) on lipid metabolism and gut microbiota in rats fed a high-fat diet. Read More

View Article and Full-Text PDF

Determination of Biopsy Yield That Optimally Detects Eosinophilic Gastritis and/or Duodenitis in a Randomized Trial of Lirentelimab.

Clin Gastroenterol Hepatol 2021 Jun 2. Epub 2021 Jun 2.

Baylor College of Medicine, Houston, TX.

Background & Aims: Eosinophilic gastritis (EG) and eosinophilic duodenitis (EoD), characterized by chronic gastrointestinal (GI) symptoms and increased numbers or activation of eosinophils and mast cells in the GI tract, are likely underdiagnosed. We aimed to determine rates of EG and EoD and number of biopsies required to optimize detection using screening data from a randomized trial of lirentelimab (AK002), an antibody against siglec-8 that depletes eosinophils and inhibits mast cells. We also characterized endoscopic features and symptoms of EG and EoD. Read More

View Article and Full-Text PDF

Secondary Skin Involvement in Classic Hodgkin Lymphoma: Results of an International Collaborative Cutaneous Lymphoma Working Group Study of 25 Patients.

J Cutan Pathol 2021 Jun 4. Epub 2021 Jun 4.

Pathology Department, Université de Paris, Hôpital Saint-Louis, Paris, France.

Aims: Cutaneous involvement by classic Hodgkin lymphoma (CHL) is an extraordinarily rare phenomenon in the current era. To date, no single large case series of cutaneous involvement by Hodgkin lymphoma has ever been reported in the literature.

Methods And Results: A total of 25 cases of classic Hodgkin lymphoma were found. Read More

View Article and Full-Text PDF

Comparison between computed tomography and ultrasound for presurgical evaluation of oral tongue squamous cell carcinoma tumor thickness.

Am J Otolaryngol 2021 May 27;42(6):103089. Epub 2021 May 27.

Departments of Radiology, Massachusetts Eye and Ear, Boston, MA, United States of America; Harvard Medical School, Boston, MA, United States of America. Electronic address:

Purpose: To compare the accuracy of oral tongue squamous cell carcinoma (OTSCC) tumor thickness (TT) measured on CT to intraoperative ultrasound (US) and histopathology.

Methods And Materials: Twenty-six patients with OTSCC who underwent tumor resection by a single surgeon with simultaneous intraoperative US between 3/2016 and 4/2019 were prospectively identified, and their data reviewed. TT was independently measured in 19 patients who underwent preoperative CT (cTT) by two neuroradiologists blinded to US and histological results. Read More

View Article and Full-Text PDF

Magnetic Resonance Imaging Detection of Glucose-Stimulated Zinc Secretion in the Enlarged Dog Prostate as a Potential Method for Differentiating Prostate Cancer From Benign Prostatic Hyperplasia.

Invest Radiol 2021 Jul;56(7):450-457

Department of Radiology, University of Texas Southwestern Medical Center, Dallas.

Objectives: In the United States, prostate cancer (PCa) is the most common cancer in men. Multi-parametric magnetic resonance imaging (MRI) is increasingly being relied upon for the diagnosis and characterization of PCa, but differentiating malignancy from benign prostatic hyperplasia (BPH) in the transition zone using MRI can be challenging. The characteristically high levels of zinc in human prostate tissue and a close relationship between malignant proliferation and zinc homeostatic dysregulation create opportunities to visualize PCa with novel contrast media. Read More

View Article and Full-Text PDF

Ameliorative Effects of Oral Glucosamine on Insulin Resistance and Pancreatic Tissue Damage in Experimental Wistar rats on a High-fat Diet.

Comp Med 2021 Jun 3. Epub 2021 Jun 3.

Hyperlipidemia due to a high-fat diet (HFD) is a risk factor for inducing insulin resistance (IR) and adverse effects onpancreatic β-cells in obesity and type 2 diabetes mellitus. This relationship may be due to activation of the hexosaminebiosynthesis pathway. Administration of exogenous glucosamine (GlcN) can increase the end product of this pathway(uridine-5'-diphosphate-N-acetyl-glucosamine), which can mediate IR and protein glycosylation. Read More

View Article and Full-Text PDF

Fibrous Osteodystrophy, Chronic Renal Disease, and Uterine Adenocarcinoma in Aged Gray Mouse Lemurs (Microcebus murinus).

Comp Med 2021 Jun 3. Epub 2021 Jun 3.

The gray mouse lemur (Microcebus murinus, GML) is a nocturnal, arboreal, prosimian primate that is native to Madagascar.Captive breeding colonies of GMLs have been established primarily for noninvasive studies on questions related to circadian rhythms and metabolism. GMLs are increasingly considered to be a strong translational model for neurocognitive aging due to overlapping histopathologic features shared with aged humans. Read More

View Article and Full-Text PDF

Intestinal Abnormalities in Patients With SARS-CoV-2 Infection: Histopathologic Changes Reflect Mechanisms of Disease.

Am J Surg Pathol 2021 Jun 3. Epub 2021 Jun 3.

Department of Pathology and Laboratory Medicine Division of Gastroenterology and Hepatology, Weill Cornell Medicine Department of Medicine, New York-Presbyterian Hospital, New York, NY.

Approximately 20% of patients with symptomatic syndrome-associated coronavirus-2 (SARS-CoV-2) infection have gastrointestinal bleeding and/or diarrhea. Most are managed without endoscopic evaluation because the risk of practitioner infection outweighs the value of biopsy analysis unless symptoms are life-threatening. As a result, much of what is known about the gastrointestinal manifestations of coronavirus disease-2019 (COVID-19) has been gleaned from surgical and autopsy cases that suffer from extensive ischemic injury and/or poor preservation. Read More

View Article and Full-Text PDF

Diagnostic methods and therapeutic options of uveal melanoma with emphasis on MR imaging-Part I: MR imaging with pathologic correlation and technical considerations.

Insights Imaging 2021 Jun 3;12(1):66. Epub 2021 Jun 3.

Department of Medical Surgical Sciences and Advanced Technologies "G.F. Ingrassia" - Radiology I Unit, University Hospital Policlinico "G. Rodolico-San Marco", Via Santa Sofia 78, 95123, Catania, Italy.

Uveal melanoma is a malignant neoplasm that derives from pigmented melanocytes of the uvea and involves, in order of decreasing prevalence, the choroid, ciliary body and iris. Its prognosis is related to histopathologic and genetic features, tumor size and location, extraocular extension. The diagnosis is fundamentally based on clinical evaluation (ophthalmoscopy, biomicroscopy) and ultrasonography. Read More

View Article and Full-Text PDF

Impending Aortic Rupture in a Patient with Syphilitic Aortitis.

Vasc Health Risk Manag 2021 25;17:255-258. Epub 2021 May 25.

Department of Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania.

We report the case of a 48-year-old man, admitted for atrial fibrillation with rapid heart rate and intense chest pain. A quick evaluation revealed a giant aortic aneurysm with severe aortic regurgitation and pericardial fluid without a trace of aortic dissection. Because of high suspicion of aortic rupture, an emergency surgery was planned, and a Bentall procedure was performed. Read More

View Article and Full-Text PDF

Dermoscopic Findings and the Clinicopathologic Correlation of Pigmented Purpuric Dermatosis: A Retrospective Review of 60 Cases.

Ann Dermatol 2021 Jun 4;33(3):214-221. Epub 2021 May 4.

Department of Dermatology, Korea University Ansan Hospital, Ansan, Korea.

Background: Pigmented purpuric dermatosis (PPD) is known as a chronic recurrent eruption which usually presents with petechiae and pigmented macules on the lower extremities. Dermoscopy is a noninvasive diagnostic tool in identifying pigmented and vascular lesions, which can also be beneficial in the evaluation of PPD.

Objective: We aimed to analyze the common dermoscopic characteristics of PPD, and correlate those findings with the histopathologic features. Read More

View Article and Full-Text PDF

Evaluation of Adrenal Cortical Function in Neonatal and Weanling Laboratory Beagle Dogs.

Toxicol Pathol 2021 07 2;49(5):1117-1125. Epub 2021 Jun 2.

Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, 1354Ohio University, Athens, OH, USA.

The most common target organ for toxicity in the endocrine system is the adrenal gland, and its function is dependent upon the hypothalamus and pituitary gland. Histopathologic examination of the adrenal glands and pituitary gland is routinely performed in toxicity studies. However, the function of the adrenal gland is not routinely assessed in toxicity studies. Read More

View Article and Full-Text PDF

Reliability of histopathologic diagnosis of fibrotic interstitial lung disease: an international collaborative standardization project.

BMC Pulm Med 2021 Jun 1;21(1):184. Epub 2021 Jun 1.

Department of Pathology, Yale University School of Medicine, New Haven, CT, 06510, USA.

Background: Current interstitial lung disease (ILD) diagnostic guidelines assess criteria across clinical, radiologic and pathologic domains. Significant interobserver variation in histopathologic evaluation has previously been shown but the specific source of these discrepancies is poorly documented. We sought to document specific areas of difficulty and develop improved criteria that would reduce overall interobserver variation. Read More

View Article and Full-Text PDF

Utilizing Whole Slide Images for the Primary Evaluation and Peer Review of a GLP-Compliant Rodent Toxicology Study.

Toxicol Pathol 2021 Jun 1:1926233211017031. Epub 2021 Jun 1.

Deciphex, Dublin, Ireland.

The approach undertaken to deliver a Good Laboratory Practice (GLP) validation of whole slide images (WSIs) and the associated workflow for the digital primary evaluation and peer review of a GLP-compliant rodent inhalation toxicity study is described. The contract research organization (CRO) undertook validation of the slide scanner, scanner software, and associated database software. This provided a GLP validated environment within the database software for the primary histopathologic evaluation using WSI and viewed with the database software web viewer. Read More

View Article and Full-Text PDF

Histologic evaluation of host immune microenvironment and its prognostic significance in oral tongue squamous cell carcinoma: a comparative study on lymphocytic host response (LHR) and tumor infiltrating lymphocytes (TILs).

Pathol Res Pract 2021 May 10:153473. Epub 2021 May 10.

Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA. Electronic address:

Background: Host immune microenvironment is a key component of anti-tumoral immune response, influencing tumor progression, regression, and treatment responses. There is a need for simple and reliable histologic measurements of host immune response in routine histopathologic diagnosis.

Methods: The prognostic value of lymphocytic host response (LHR), a qualitative histologic grading scheme, was compared to stromal/intratumoral TIL (sTIL/iTIL) percentage, a quantitative measurement in a retrospective study of 329 patients with oral tongue squamous cell carcinoma (OTSCC) of 4 cm or less in size. Read More

View Article and Full-Text PDF

Gingival Leukoplakia: Hyperkeratosis with Epithelial Atrophy Is A Frequent Histopathologic Finding.

Head Neck Pathol 2021 May 31. Epub 2021 May 31.

Department of Oral Medicine Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, 02115, USA.

White lesions on the gingiva and palatal mucosa may represent reactive keratoses, including specific diseases such as benign alveolar ridge keratosis, or nonreactive keratoses, such as true leukoplakia, the latter being associated with a high recurrence rate at this site. The aim of this study is to determine the histopathologic features of gingival keratoses. Hyperkeratotic lesions from the gingiva, palatal mucosa, and alveolar ridge mucosa were available for evaluation after excluding specific keratotic lesions such as candidiasis. Read More

View Article and Full-Text PDF

Evaluation of the Filum Terminale in Hereditary Equine Regional Dermal Asthenia.

Vet Pathol 2021 May 31:3009858211018660. Epub 2021 May 31.

116098Michigan State University, East Lansing, MI, USA.

The objectives of this study were to describe the anatomy, histology, and ultrastructure of the equine filum terminale (FT) and to describe the FT in hereditary equine regional dermal asthenia (HERDA), a model of human Ehlers-Danlos syndromes (EDS). Those humans suffer from tethered cord syndrome (TCS) caused by an abnormally structured FT wherein its attachment at the base of the vertebral column leads to long-term stretch-induced injury to the spinal cord. The pathophysiology of TCS in EDS is poorly understood, and there is a need for an animal model of the condition. Read More

View Article and Full-Text PDF

CD63 expression in metastatic melanoma and melanocytic nevi in lymph nodes.

Pathol Res Pract 2021 Jul 13;223:153464. Epub 2021 May 13.

Arkadi M. Rywlin M.D. Department of Pathology, Mount Sinai Medical Center, Miami Beach, FL, USA.

Lymph node status remains one of the most important determinants for prognosis in patients with invasive malignant melanoma. Immunohistochemical stains are routinely employed in the histopathologic evaluation of sentinel lymph nodes removed for staging in patients with melanoma. Histologic analysis may reveal the presence of incidental benign melanocytic nevus cell inclusions (BMNCI), which are critical to distinguish from metastatic melanoma (MM). Read More

View Article and Full-Text PDF

Feline mesothelioma: case report and review of cytologic, immunocytochemical, histopathologic, and immunohistochemical findings.

J Vet Diagn Invest 2021 May 28:10406387211017489. Epub 2021 May 28.

Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.

Mesotheliomas are uncommon neoplasms that arise from mesothelial cells in either the abdominal or thoracic cavities and are rarely diagnosed in cats. A 10-y-old spayed female domestic shorthair cat was presented to the Louisiana State University oncology service for evaluation of a large amount of abdominal effusion. Abdominal ultrasound identified a large mesenteric mass with numerous ill-defined nodules. Read More

View Article and Full-Text PDF

Unveiling the histopathologic spectrum of MRI-guided breast biopsies: an institutional pathological-radiological correlation.

Breast Cancer Res Treat 2021 Jun 27;187(3):673-680. Epub 2021 May 27.

Department of Pathology, Medical College of Wisconsin, 9200 W. Wisconsin Ave., Lab Building, Lower Level, Room L69, Milwaukee, WI, 53226, USA.

Purpose: Breast magnetic resonance imaging (MRI) has high sensitivity but suffers from low specificity, resulting in many benign breast biopsies for MRI-detected lesions. We sought to compare histologic findings between patients who underwent MRI-guided breast biopsy versus biopsy via other imaging modalities as well as to examine features associated with malignancy in the MRI cohort to help inform MRI-biopsy practice.

Methods: A 2-year (2018-2019) retrospective review of breast biopsies at our enterprise was conducted. Read More

View Article and Full-Text PDF

Sub-epithelial hyalinization, incomplete cystic lining, and corrugated surface could be a predictor of recurrence in Odontogenic Keratocysts.

J Oral Biol Craniofac Res 2021 Jul-Sep;11(3):423-429. Epub 2021 May 12.

Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia.

Background: Odontogenic Keratocysts (OKCs) are known for their rapid growth and tendency to invade the adjacent tissues. Its high recurrence rate (2.5%-62%) has attracted many kinds of research to identify new parameters to predict recurrence that would enable better treatment outcomes for such patients. Read More

View Article and Full-Text PDF

Histopathological Pattern of Kidney Diseases Among HIV-Infected Treatment-Naïve Patients in Kano, Nigeria.

Int J Nephrol Renovasc Dis 2021 18;14:143-148. Epub 2021 May 18.

Department of Medicine, University of Witwatersrand, Johannesburg, South Africa.

Introduction: Kidney biopsy in patients with HIV-associated kidney diseases allows for histopathologic diagnosis and institution of appropriate treatment as well as proper prognostication. There is a paucity of data on the histopathological pattern of HIV-associated kidney diseases in most sub-Saharan African countries. This study was aimed at evaluating the histopathologic patterns of kidney diseases seen among HIV-infected treatment-naive patients in our center as this will allow for proper diagnosis and institution of appropriate treatment. Read More

View Article and Full-Text PDF

Granulomatous Dermatitis Associated With Rubella Virus Infection in an Adult With Immunodeficiency.

JAMA Dermatol 2021 May 26. Epub 2021 May 26.

Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia.

Importance: Immunodeficiency-related, vaccine-derived rubella virus (RuV) as an antigenic trigger of cutaneous and visceral granulomas is a rare, recently described phenomenon in children and young adults treated with immunosuppressant agents.

Objective: To perform a comprehensive clinical, histologic, immunologic, molecular, and genomic evaluation to elucidate the potential cause of an adult patient's atypical cutaneous granulomas.

Design, Setting, And Participants: A prospective evaluation of skin biopsies, nasopharyngeal swabs, and serum samples submitted to the Centers for Disease Control and Prevention was conducted to assess for RuV using real-time reverse-transcriptase polymerase chain reaction (RT-PCR) and viral genomic sequencing. Read More

View Article and Full-Text PDF

Three-dimensional printed poly (L-lactide) and hydroxyapatite composite for reconstruction of critical bone defect in rabbits.

Acta Cir Bras 2021 21;36(4):e360404. Epub 2021 May 21.

Assistant Professor. Universidade Estadual Paulista "Júlio de Mesquita Filho" - Faculty of Agrarian and Veterinary Sciences - Department of Clinical and Veterinary Surgery - Jaboticabal (SP), Brazil.

Purpose: To use a 3D printed poly (L-lactide) acid (PLLA) and hydroxyapatite (HA) composite as a bone substitute for reconstruction of a critical bone defect in the radius of rabbits.

Methods: A 1.5 cm ostectomy was performed in the radial diaphysis of 60 New Zealand white rabbits. Read More

View Article and Full-Text PDF

Is Microthrombosis the Main Pathology in Coronavirus Disease 2019 Severity?-A Systematic Review of the Postmortem Pathologic Findings.

Crit Care Explor 2021 May 20;3(5):e0427. Epub 2021 May 20.

Departments of Anesthesiology and Perioperative Medicine, University of Louisville School of Medicine, Louisville, KY.

This systematic review attempts to retrieve and report the findings of postmortem studies including the histopathologic data of deceased coronavirus disease 2019 patients and to review the manifestations of coronavirus disease 2019-associated thrombotic pathologies reported in the recent literature.

Data Sources: PubMed, Excerpta Medica Database, and Cochrane library between December 1, 2019, and August 26, 2020.

Study Selection: Investigators screened 360 unique references, retrieved published autopsy series, and report on the postmortem histopathologic information on patients who had died of coronavirus disease 2019. Read More

View Article and Full-Text PDF

Evaluation of Cost-effectiveness and Clinical Value of Routine Histopathologic Examination of Septoplasty Specimens.

Otolaryngol Head Neck Surg 2021 May 25:1945998211012950. Epub 2021 May 25.

Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Albany Medical Center, Albany, New York, USA.

Objectives: During septoplasty, normal cartilage and bone are often sent for pathologic examination despite benign appearance. We explored pathology results following septoplasty from April 2016 to April 2018, examining clinical value and relevance, implications, and cost analysis.

Study Design: Retrospective chart review. Read More

View Article and Full-Text PDF