Results 31 to 40 of about 4,957,056 (152)

Uterine PEComa: Perivascular epithelioid cell neoplasm

, 2023
ANTECEDENTES: El PEComa es un tumor de células epitelioides, perivascular, de origen mesenquimatoso que expresa marcadores melanocíticos y miogénicos. Estos tumores son un grupo raro de neoplasias.
Caballero Malacara, Valeria, Treviño Salinas, Emilio Modesto, Garza Hernández, Cristina, Rodriguez Contreras, Mericia del Rosario, Barboza Quintana, Oralia   +4 more
core   +1 more source

An unusual case of uterine PEComa presenting with disseminated intravascular coagulation

Gynecologic Oncology Reports, 2019
Perivascular epithelioid cell neoplasms (PEComas) are mesenchymal neoplasms originating from the perivascular epithelioid cell (PEC) line. The World Health Organization (WHO) further defines PEComa as “a mesenchymal tumor composed of histologically and ...
Rodger Rothenberger, Amanda Jackson, Ady Kendler, Thomas Herzog, Caroline Billingsley   +4 more
doaj   +1 more source

Malignant melanocytic neoplasm of pancreas with liver metastasis: Is it malignant melanoma or clear cell sarcoma?

Indian Journal of Pathology and Microbiology, 2017
Malignant melanocytic neoplasm, usually seen in soft tissues, is rare in a visceral location and presents as a diagnostic dilemma. We present a case of pancreatic malignant melanocytic neoplasm with liver metastasis. A 58-year-old man presented with left
Thomas Alex Kodiatte, Sam Varghese George, Raju Titus Chacko, Banumathi Ramakrishna   +3 more
doaj   +1 more source

Hepatic Angiomyolipoma: A Case Report and Review of the Literature

Lietuvos Chirurgija, 2023
Background. Hepatic angiomyolipomas are uncommon non-cancerous mesenchymal tumors that belong to the perivascular epithelioid cell tumour group. Smooth muscle cells, fat cells and blood vessels can be observed in these types of neoplasm.
Jekaterina Strelčenko, Justas Kuliavas, Eugenijus Stratilatovas, Audrius Dulskas   +3 more
doaj   +3 more sources

Perivascular Epithelioid Cell Tumor of the Kidney: A Rare Case Report

, 2017
Perivascular epithelioid cell tumors are rare mesenchymal tumors composed of histologically and immunohistochemically distinctive perivascular epithelioid cells.
YÖRÜKOĞLU, KUTSAL, ÇELİK, SERDAR, Adil Esen, BOZKURT, OZAN, Aykut Kefi, KEFİ, AYKUT, ASLAN, GÜVEN, Ozan Bozkurt, Demir, Omer, SEÇİL, MUSTAFA, Sedat Karakoç, Ömer Demir, Karakoc, Sedat, Mustafa Seçil, Kutsal Yörükoğlu, ESEN, AHMET ADİL, Burçin Tuna, Güven Aslan, Tuna, Burcin, Serdar Çelik   +19 more
core   +1 more source

Primary perivascular epithelioid cell tumor (PEComa) in bone: A review of the literature and a case arising in the humerus with multiple metastases

Journal of Bone Oncology, 2021
Introduction: Perivascular epithelioid cell tumors (PEComas) are a family of mesenchymal tumors that rarely arise as a primary bone tumor. Material and methods: We report a case of primary malignant bone PEComa. A literature review via PubMed, Embase and
Jingyu Zhong, Yangfan Hu, Liping Si, Yue Xing, Jia Geng, Qiong Jiao, Huizhen Zhang, Weiwu Yao   +7 more
doaj   +1 more source

Soft Tissue Perivascular Epithelioid Cell Tumour: An Unusual Finding

, 2021
Perivascular epithelioid cell tumour (PEComa) is a rare mesenchymal tumour made up of clear perivascular cells with epithelioid characteristics, which co-expresses muscle and melanocytic markers with a component of spindle cells, like sarcoma and variety
Rosa Ospina Perez, Mauricio Bermúdez Sagre, María Bolaño Romero, Jennifer Jiménez Valverde, Ivan Lozada Martínez, Jennyfer Ortega Guatame, Christian Ospina Pérez   +6 more
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Primary Pulmonary Mesenchymal Neoplasm With EWSR1::CREM Fusion: Cytologic Findings and Molecular Diagnosis

Diagnostic Cytopathology, EarlyView.
ABSTRACT Background Primary pulmonary mesenchymal neoplasms with EWSR1::CREM fusion are rare. These lesions are challenging to diagnose by morphology and immunohistochemistry alone. Case A 66‐year‐old woman (ex‐smoker) was found to have a 1.3‐cm right lower lobe lung nodule that had grown very slowly over a 9‐year period.
Priya Upadhyay, Sanjay Mukhopadhyay, Swikrity U. Baskota   +2 more
wiley   +1 more source

Perivascular epithelioid cell tumour of the uterus: what do we know? [PDF]

, 2020
Perivascular epithelioid cell neoplasm (PEComa) is a rare mesenchymal tumour characterized by distinctive histological and immunohistochemical perivascular epithelioid cells. These tumours can be found in various anatomic sites, with gynaecologic PEComas
Kang, Julian H. L., Wong, Yvonne W. Y.
core   +1 more source

Mapping the Tissue Architecture and Endothelial‐PEC Network in HAML Using Single‐Cell and Spatial Transcriptomics

Cancer Science, EarlyView.
Spatial multi‐omics mapping of hepatic angiomyolipoma reveals that PEComas tightly co‐localize with endothelial cells, which drive autophagic flux in adjacent tumor cells via a paracrine PDGFD–PDGFRB–Ras axis, establishing a compensatory survival network that operates in parallel to canonical TSC–mTOR defects.
Xinyang Liu, Yang Guo, Xuehong Tie, Yu Liu, Fuyu Li, Jingkai Liu, Xiaohang Sun, Jiajun Zhao, Feng Geng, Yingjian Liang   +9 more
wiley   +1 more source