Results 81 to 90 of about 9,723 (177)

WHO classification of skin tumours: key updates in the fifth edition

open access: yesHistopathology, Volume 88, Issue 3, Page 555-568, February 2026.
This review article summarizes the key updates in the 5th edition of the WHO Classification of Skin Tumours. It provides an overview of the major changes and new entities specific to the skin section, covering areas such as epidermal, melanocytic, mesenchymal and other tumours. The 5th edition of the World Health Organization Classification of Tumours (
Gabrielle Goldman‐Lévy   +29 more
wiley   +1 more source

Erdheim-Chester Disease Presenting with Secondary Hypertension as a Result of Bilateral, Proximal Renal Artery Stenosis: A Case Report

open access: yesCase Reports in Nephrology and Dialysis, 2017
Erdheim-Chester disease (ECD) is a rare, non-Langerhans cell histiocytosis presenting most commonly with bone and central nervous system symptoms, including but not limited to bone pain and diabetes insipidus.
Farid Arman   +4 more
doaj   +1 more source

Flat Topped Brown Papules on a Four-Year-Old Male

open access: yesRevista da Sociedade Portuguesa de Dermatologia e Venereologia, 2020
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Francisca Alves   +3 more
doaj   +1 more source

GPNMB immunohistochemistry is a useful ancillary tool for the diagnosis of pulmonary lymphangioleiomyomatosis

open access: yesHistopathology, Volume 88, Issue 3, Page 698-709, February 2026.
We evaluated the diagnostic utility of GPNMB immunohistochemistry in LAM. GPNMB showed strong expression in LAM cells, while the differential diagnostic mimics showed no or only low expression. Based on its 100% sensitivity and specificity in our cohort, GPNMB is a highly reliable immunohistochemical marker for the diagnosis of LAM.
Fatime Szalai   +6 more
wiley   +1 more source

Erdheim-Chester Disease Associated with Marginal Zone Lymphoma and Monoclonal Proteinemia

open access: yesCase Reports in Hematology, 2011
Erdheim-Chester disease (ECD) is a rare non-Langerhans cell histiocytosis. We report a fatal case of ECD with extensive cardiac involvement associated with a marginal zone lymphoma and monoclonal proteinemia in a young man.
Peter G. Pavlidakey   +3 more
doaj   +1 more source

A Rare Case of a Systemic Non-Langerhans Histiocytosis Presenting with Diabetes Insipidus and a Tentorial Mass [PDF]

open access: yes, 2015
Introduction The histiocytoses are a group of clinically diverse diseases distinguished from one another based on the specific immunophenotype of the lesional cells, implying derivation from the same precursor cell.
Barros, MS, Guilherme   +5 more
core   +2 more sources

Pneumomediastinum and Pneumothorax as Rare Complications of Ruptured Pulmonary Hydatid Cyst: A Case Report

open access: yesClinical Case Reports, Volume 14, Issue 1, January 2026.
ABSTRACT Ruptured hydatid cyst should be considered when encountering spontaneous pneumothorax and pneumomediastinum, especially in young patients in regions with high prevalence of hydatid cyst. Awareness of atypical signs ensures instant diagnosis, guiding appropriate surgical and medical treatment to prevent serious complications.
Farzaneh Akbari   +5 more
wiley   +1 more source

Thoracic, abdominal and musculoskeletal involvement in Erdheim-Chester disease: CT, MR and PET imaging findings. [PDF]

open access: yes, 2014
BACKGROUND: Erdheim-Chester disease (ECD) is a rare, non-Langerhans cell histiocytosis with characteristic radiological and histological features. This entity is defined by a mononuclear infiltrate consisting of lipid-laden, foamy histiocytes that stain
Antunes, C, Donato, P, Graça, B
core   +1 more source

ALK‐Positive Histiocytosis With Unilateral Breast Involvement: A Case Report

open access: yesClinical Case Reports, Volume 14, Issue 1, January 2026.
ABSTRACT APH is a rare disorder characterized by the proliferation of ALK‐expressing histiocytes with variable anatomical involvement; however, mammary involvement is exceptionally rare. A 32‐year‐old woman presented with a painless right breast mass. Ultrasound identified a 9 × 8 mm hypoechoic nodule, categorized as BI‐RADS 4A.
Xuechun Liu, Dong Ren, Yanfang Liang
wiley   +1 more source

Xanthoma Disseminatum with Tumor-Like Lesion on Face

open access: yesCase Reports in Dermatological Medicine, 2014
Xanthoma disseminatum (XD) is a rare benign mucocutaneous xanthomatosis that is classified as a benign non-Langerhans cell histiocytosis. We report a 62-year-old man who presented with widespread yellow-brown papulonodular and tumoral lesions on face ...
Habib Ansarin   +3 more
doaj   +1 more source

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