Results 41 to 50 of about 2,403 (160)

Abdominopelvic Perivascular Epithelioid Cell Tumor with Overt Malignancy: A Case Report

Kaohsiung Journal of Medical Sciences, 2005
Perivascular epithelioid cell tumor (PEComa) is a group of rare tumors composed of epithelioid cells with characteristic perivascular distribution and co-expression of the melanogenic marker HMB-45 and muscular markers. There are no documented parameters
I-Yu Chen, Sheau-Fang Yang, Chee-Yin Chai   +2 more
doaj   +1 more source

Primary liver perivascular epithelioid cell tumor (pecoma): systematic review of literature and case report. [PDF]

, 2022
Introduction. Primary liver perivascular epithelioid cell tumor (PEComa) is an extremely rare entity. In this article, we present a case report with a systematic review of literature of patients diagnosed with primary liver PEComa.
Karaliūtė, Gintarė,
core  

Sclerosing perivascular epithelioid cell tumor of the uterus: A rare entity posing diagnostic challenge

Journal of Mid-Life Health, 2022
Perivascular epithelioid cell tumor (PEComa) is a rare mesenchymal uterine tumor and the histological variant, sclerosing PEComa is exceedingly rare. Sclerosing PEComas preferentially occur in the retroperitoneum and occurrence in the uterine corpus is ...
Reetu Kundu, Pradip Kumar Saha, Pranab Dey   +2 more
doaj   +1 more source

Differentiating Hepatic Perivascular Epithelioid Cell Tumor from Hepatocellular Carcinoma without High-Risk Factors using Contrast-Enhanced Ultrasound

BIO Integration
Background: Hepatic perivascular epithelioid cell tumor (PEComa) is a rare tumor with malignant potential that is frequently misdiagnosed as hepatocellular carcinoma (HCC), despite requiring distinct treatment approaches.
Xiang Fei, Nan Li, Bo Jiang, Yaqiong Zhu, Peng Han, Miao Li, Lianhua Zhu   +6 more
doaj   +1 more source

Malignant Perivascular Epithelioid Cell Tumor (PEComa) of the Uterus as Part of the Hereditary Cancer Syndrome: A Case Diagnosed with Multiple Malignancies

Türk Patoloji Dergisi, 2023
A perivascular epithelioid cell tumor (PEComa) is an uncommon mesenchymal tumor composed of perivascular epithelioid cells. These tumor cells show variable immunoreactivity for both melanocytic and myogenic markers. Occurrence of PEComa has been reported
Sultan CALISKAN, Omer Salih AKAR, Seda GUN, Mehmet KEFELI   +3 more
doaj   +1 more source

Out of the Ordinary, but Not Out of the Question: Atypia in Pancreatic Lesions Is Not Always Carcinoma

Cytopathology, EarlyView.
An incidental pancreatic lesion in a 69‐year‐old woman was sampled by EUS‐guided fine‐needle biopsy. Integrated cytopathological and histopathological evaluation with immunochemical staining supported organ‐preserving surgery. ABSTRACT Pancreatic perivascular epithelioid cell tumours (PEComas) are exceptionally rare mesenchymal neoplasms.
Maja Kebe Radulovic, Branislava Rankovic, Ajda Toni, Margareta Zlajpah, Darko Siuka   +4 more
wiley   +1 more source

Novel and emerging cutaneous soft tissue tumours

Histopathology, EarlyView.
This review outlines the defining histopathological, immunophenotypic and molecular features of novel and emerging cutaneous soft tissue tumours, including hybrid superficial ALK‐rearranged myxoid spindle cell neoplasm/epithelioid fibrous histiocytoma, superficial neurocristic tumour, ALK‐rearranged epithelioid vascular neoplasm and MITF pathway ...
Saba Shafi, Josephine K Dermawan
wiley   +1 more source

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

Clinical Case Reports, Volume 14, Issue 9, September 2026.
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.
Kidus Tesfaye Bezabih, Hana Sisay Belay, Merid Lemma Kebede, Abebe Ketema Aderu, Mathyas Dessalegn Gebreyes, Kelil Hussein Jibicho, Adugna Assefa Talemahu, Elias Fikre Merid, Kedir Negesso Tukeni   +8 more
wiley   +1 more source

Malignant retroperitoneal PEComa: A case report with emphasis on radiological findings

Radiology Case Reports, 2023
A perivascular epithelioid cell tumor (PEComa) is a rare mesenchymal neoplasm with distinctive perivascular epithelioid cells that usually demonstrates myomelanocytic differentiation.
Kody Dhaliwal, MD, Shannon Marslender, MD   +1 more
doaj   +1 more source

A subset of high‐grade sarcomas with myogenic differentiation are associated with recurrent FGFR fusions

The Journal of Pathology: Clinical Research, Volume 12, Issue 4, July 2026.
Abstract Recurrent fusions involving FGFR1‐4 genes have been previously described in rare subsets of mostly benign chondroid and mesenchymal neoplasms involving bone and soft tissue. However, a more comprehensive analysis of sarcomas associated with FGFR fusions, including their incidence and histotypes, has not been performed.
Maximus CF Yeung, Carla Saoud, Sarah Chiang, Meera Hameed, Cristina R Antonescu   +4 more
wiley   +1 more source