Results 11 to 20 of about 4,957,056 (152)

Malignant Mesenteric Perivascular Epithelioid Cell Neoplasm Presenting as an Intra-Abdominal Fistula in a 49-Year-Old Female [PDF]

Case Reports in Oncological Medicine, 2014
Perivascular epithelioid cell tumors are rare mesenchymal tumors arising from histologically and immunohistochemically distinctive perivascular epithelioid cells that express both myogenic and melanocytic markers.
Sakshi Kapur, Napoleon K. Patel, Miles B. Levin, Richard Huang   +3 more
doaj   +3 more sources

Perivascular Epithelioid Cell Tumor in the Stomach [PDF]

Journal of Pathology and Translational Medicine, 2017
Perivascular epithelioid cell tumors or PEComas can arise in any location in the body. However, a limited number of cases of gastric PEComa have been reported. We present two cases of gastric PEComas.
Sun Ah Shin, Jiwoon Choi, Kyung Chul Moon, Woo Ho Kim   +3 more
doaj   +2 more sources

Rare gynecological entity: malignant cervical PEComa (perivascular epithelioid cell differentiation tumour) - challenges in diagnosis, treatment and surveillance

Brazilian Journal of Oncology
Perivascular epithelioid cell tumors constitute a family of mesenchymal tumors characterized by the concomitant expression of melanocytic and muscular markers.
Amanda da Silva Anjos, Filipe Vieira Kwiatkowski, Rafael Vieira Kwiatkowski, Danielle Rediess Bonow, Luana Ferreira Vasques, Sabine Triguero Teixeira   +5 more
doaj   +2 more sources

Hepatic perivascular epithelioid cell tumor: A case report

European Journal of Radiology Open, 2018
Perivascular epithelioid cell tumor (PEComa) of liver is extremely rare hepatic neoplasm with only 30 cases reported in the literature. These lesions are found mainly in young females and may present a potential pitfall in the characterisation of focal ...
Rok Dežman, Dragan Mašulović, Peter Popovič   +2 more
doaj   +2 more sources

Perivascular epithelioid cell neoplasm (PEComa) of the urinary bladder presenting as urinary tract infection in a young woman [PDF]

Urology Case Reports
PEComa is a rare mesenchymal tumor with unique features, sometimes manifesting in younger patients and can exhibit malignant transformation. We present a 24-year-old woman with urinary symptoms and hematuria.
Dana Greenberg, Yoav Avidor, Rami Mattar, Muhammad Majdoub, Alona Meir, Ronen Rub   +5 more
doaj   +2 more sources

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

IJU Case Rep
ABSTRACT Introduction Epithelioid angiomyolipoma is a rare perivascular epithelioid cell tumor subtype with malignant potential. Its morphology mimics renal cell carcinoma, posing diagnostic challenges. Half of these cases harbor TSC1/TSC2 alterations, and a small subset features TFE3 rearrangements, mutually exclusive of TSC mutations.
Kondo Y, Nagashima Y, Zennami K, Sato M, Sumiyoshi S, Sugimoto A, Isomura M, Takahara K, Minamiguchi S.   +8 more
europepmc   +2 more sources

Malignant uterine/broad-ligament perivascular epithelioid cell tumor (PEComa) coexisting with leiomyoma in a postmenopausal woman: A case report

Case Reports in Women's Health
Perivascular epithelioid cell tumor of the uterus is a rare mesenchymal neoplasm with variable malignant potential and nonspecific clinical and radiologic features, often mistaken preoperatively for leiomyoma.
Derar I.I. Ismerat, Barah K.S. Alsalameh, Majd Oweidat, Karam M. Hmidat, Areen Sulaiman, Yara Atawneh, Baraa Z. Zawahra, Izzeddin A. Bakri, Hani Hour   +8 more
doaj   +2 more sources

A hypervascular perivascular epithelioid cell tumor of the urinary bladder showing TFE3 immunoreactivity clinically misdiagnosed as paraganglioma in an adolescent patient [PDF]

BMC Urology
Perivascular epithelioid cell tumor (PEComa) of the urinary bladder is an exceptionally rare mesenchymal neoplasm and may be difficult to diagnose preoperatively.
Minjie Ou, Chongjun Ji, Jin Wen
doaj   +2 more sources

A frontal lobe mass in a 6-year-old girl. [PDF]

Brain Pathol
Brain Pathology, EarlyView.
Vacca FS, Mochizuki A, Patel SK, Jones B, Roy S, Gupta K.   +5 more
europepmc   +2 more sources

Unusual paediatric sigmoid perivascular epithelioid cell tumour with regional lymph node metastasis treated using gemcitabine and docetaxel: a case report and literature review

Journal of International Medical Research, 2021
Perivascular epithelioid cell tumour (PEComa) is an extremely rare neoplasm with distinctive morphology and specific expression of immunohistochemical markers.
Hsiu-Chung Cheng, Chia-Yu Kuo, Ching-Wen Huang, Hsiang-Hung Shih, Chih-Hung Lin, Jaw-Yuan Wang   +5 more
doaj   +2 more sources