Results 1 to 10 of about 4,316 (128)

<i>ASPSCR1: TFE3</i> Fusion-Positive Epithelioid Angiomyolipoma/PEComa Lacking Melanocytic Markers: A Case Report. [PDF]

IJU Case Rep
Introduction Epithelioid angiomyolipoma is a rare perivascular epithelioid cell tumor subtype with malignant potential. Its morphology mimics renal cell carcinoma, posing diagnostic challenges.
Kondo Y, Nagashima Y, Zennami K, Sato M, Sumiyoshi S, Sugimoto A, Isomura M, Takahara K, Minamiguchi S.   +8 more
europepmc   +3 more sources

Bladder perivascular epithelioid cell neoplasm: The importance of immunohistochemistry in the diagnosis of an unusual neoplasm

SAGE Open Medical Case Reports, 2021
Perivascular epithelioid cell neoplasms represent a group of uncommon mesenchymal tumours with as yet undiscovered benign counterpart. Although perivascular epithelioid cell neoplasms have been described arising in most organ systems as well as in soft ...
Solange De Noon, Benjamin Ayres, Uday Patel, Rami Issa, Colan Maxwell Ho-Yen   +4 more
doaj   +2 more sources

Radiological findings of two neoplasms with perivascular epithelioid cell differentiation

Radiology Case Reports, 2017
Perivascular epithelioid cell tumors (PEComas) constitute a rare subset of mesenchymal neoplasms classified by the World Health Organization in 2002. We present two cases of PEComas; the first is a cervical PEComa in a 35-year-old woman with no known ...
Timothy Diestelkamp, BS, Zachary Mikes, DO, Robin Wilson-Smith, DO, Pauline Germaine, DO   +3 more
doaj   +3 more sources

Delayed Diagnosis of Tuberous Sclerosis Complex Presenting as Abnormal Uterine Bleeding: A Case Report and Literature Review. [PDF]

Clin Case Rep
ABSTRACT Tuberous sclerosis complex (TSC) is a rare multisystem genetic disorder characterized by the development of hamartomatous lesions in multiple organs. Although neurologic and dermatologic manifestations commonly lead to diagnosis during childhood, some patients remain undiagnosed until adulthood because of atypical presentations.
Bezabih KT, Belay HS, Kebede ML, Aderu AK, Gebreyes MD, Jibicho KH, Talemahu AA, Merid EF, Tukeni KN.   +8 more
europepmc   +2 more sources

Perivascular epithelioid cell tumors (PEComa) of the female genital tract: A challenging question for gynaecologic oncologist and pathologist

Gynecologic Oncology Reports, 2020
Perivascular epithelioid cell tumors (PEComa)s are mesenchymal neoplasms composed of perivascular epithelioid cells, which express both melanocytic and myogenic markers.
Angiolo Gadducci, Gian Franco Zannoni
doaj   +3 more sources

A Rare Case of Auricular Angiolymphoid Hyperplasia With Eosinophilia Associated With Chronic Hearing Aid Use. [PDF]

Clin Case Rep
ABSTRACT Evaluating external device‐related friction is essential when managing localized auricular vascular lesions. Clinicians should recognize that angiolymphoid hyperplasia with eosinophilia (ALHE) can arise secondary to chronic mechanical irritation and may present with minimal tissue eosinophilia.
Shawish A, Raslan M, Khabbaza R, Houreih MA, Al-Janabi MH, Hassan F.   +5 more
europepmc   +2 more sources

Malignant hepatic perivascular epithelioid cell tumor: A case report and literature review. [PDF]

Radiol Case Rep
Perivascular epithelioid cell tumors (PEComas) comprise a rare group of mesenchymal neoplasms, which can arise from almost any location in the body, but cases of primary hepatic PEComa are extremely rare.
Li F, Wu Y.
europepmc   +2 more sources

Uterine PEComa With Lymphangioleiomyomatosis (LAM)-Like Features: A Case Report. [PDF]

Case Rep Pathol
Perivascular epithelioid cell tumors (PEComas) of the uterus are rare mesenchymal neoplasms characterized by myogenic and melanocytic differentiation. These tumors can mimic other uterine mesenchymal tumors in their clinical presentation and morphology ...
Raman R, Maharjan D, Dehner C, Segura S.
europepmc   +2 more sources

TFE3-rearranged PEComa with hepatic and pulmonary involvement: diagnostic challenges and resistance to mTOR-targeted therapy. [PDF]

J Cancer Res Clin Oncol
Background Perivascular epithelioid cell tumors (PEComas) are rare mesenchymal neoplasms composed of epithelioid cells that co-express melanocytic and smooth muscle markers.
Chahine S, Diab T, El Tannir M, Farhat G, Jurdi N, I Assi H.   +5 more
europepmc   +2 more sources

Malignant uterine PEComa: a narrative literature review and challenging case report. [PDF]

J Cancer Res Clin Oncol
Uterine perivascular epithelioid cell tumors (PEComas) are exceptional mesenchymal neoplasms of the gynecologic tract that often mimic common uterine lesions and lack pathognomonic clinical or radiologic features.
Maiorano MFP, Sorino J, Della Mura M, Di Nanni D, Cazzato G, Rizzo A, D'Oronzo S, Cerbone M, Cicinelli E, Marinaccio M.   +9 more
europepmc   +2 more sources