Results 51 to 60 of about 4,316 (128)

A Rare Case of Cutaneous Crystal‐Storing Histiocytosis With Kappa Light Chain Restriction and Unusual BCL6 Expression

Journal of Cutaneous Pathology, Volume 53, Issue 8, Page 682-686, August 2026.
ABSTRACT Crystal‐storing histiocytosis (CSH) is a rare histopathologic phenomenon characterized by the accumulation of crystalline material within histiocytes, most often associated with lymphoplasmacytic or plasma cell neoplasms. Cutaneous involvement is uncommon and may present diagnostic challenges.
Liangli Wang, Jonathan L. Curry, Julia Dai, Daniel H. Wang, Paolo Strati, Melody R. Becnel, Leomar Y. Ballester, Carlos A. Torres‐Cabala, Phyu P. Aung   +8 more
wiley   +1 more source

Diagnostic Challenges in Choroid Plexus Tumours

Neuropathology and Applied Neurobiology, Volume 52, Issue 4, August 2026.
In this review, we summarise the diagnostic spectrum of choroid plexus tumours, highlight key age‐dependent differential diagnoses across infants, children/adolescents and adults, and outline how histopathology, immunohistochemistry and molecular profiling support accurate tumour classification.
Christian Thomas, Martin Hasselblatt
wiley   +1 more source

Management and Outcomes of Uterine Smooth Muscle Tumour of Uncertain Malignant Potential (STUMP)

Cancer Medicine, Volume 15, Issue 7, July 2026.
ABSTRACT Background Uterine smooth muscle tumours of uncertain malignant potential (STUMP) is a mesenchymal tumour which does not fulfil the criteria for leiomyoma, benign histological subtypes, or leiomyosarcoma. The risk factors for recurrence and the rates of recurrence vary amongst different studies; as a result, there are currently no consensus ...
Aaron Hey Yin Chan, Karen Kar Loen Chan, Philip Pun Ching Ip, Ka Yu Tse   +3 more
wiley   +1 more source

Renal PEComa in a young male: A case report and insights from the literature

Urology Case Reports
Perivascular epithelioid cell tumors (PEComas) are rare mesenchymal neoplasms, commonly found in the uterus and retroperitoneum. Renal PEComas are exceedingly rare, often posing diagnostic challenges due to their resemblance to renal cell carcinoma (RCC)
Rashad Sholan, Rufat Aliyev, Malahat Sultan, Anar Almazkhanli, Savalan Karim, Jalal Gasimov   +5 more
doaj   +1 more source

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   +1 more source

Successful treatment with the mTOR inhibitor everolimus in a patient with Perivascular epithelioid cell tumor

World Journal of Surgical Oncology, 2012
Perivascular epithelioid cell tumor (PEComa) is an extremely rare neoplasm that appears to arise most commonly at visceral (especially gastrointestinal and uterine), retroperitoneal, and abdominopelvic sites.
Gennatas Constantine, Michalaki Vasiliki, Vasilatou Kairi Paraskevi, Kondi-Paphiti Agathi, Voros Dionysios   +4 more
doaj   +1 more source

Perivascular Epithelioid Cell Tumour with Intraorbital Location: Report of a Case and Review of the Literature

Case Reports in Pathology, 2016
The Perivascular Epithelioid Cell tumours (PEComas) are rare mesenchymal neoplasms recognized as entity by the World Health Organization. The tumour cells have an uncertain origin and are characterized by distinctive histological and immunohistochemical ...
Idania Lubo, Ileana Fermín, Olindo Massarelli, Roberta Gobbi, Paolo Cossu Rocca   +4 more
doaj   +1 more source

Perivascular Epithelioid Cell Tumor of the Ileum Presenting as Diverticulitis

Case Reports in Pathology, 2012
Perivascular epithelioid cell tumors (PEComas) are a group of rare mesenchymal neoplasms. Gastrointestinal PEComas are exceptionally rare, there being only a few case reports in the literature involving the colon and small intestine.
Saime Unluoglu, Umit Bayol, Nilay Korkmaz, Bekir Ozenen, Fuat Ipekci, Emel Ebru Pala   +5 more
doaj   +1 more source

Perivascular epithelioid cell neoplasm of the bladder with peritoneal metastasis

The Canadian Journal of Urology
Perivascular epithelioid cell tumors (PEComas) are a diverse group of mesenchymal neoplasms. While they have been described throughout the genitourinary system, PEComas are quite rare within the bladder.
Peter J. Arnold, Mabel Spio, Reem Youssef, Carina Dehner, Kevin Rice   +4 more
doaj   +1 more source

Imaging and Histopathologic Features of Incidentally Detected Hepatic Perivascular Epithelioid Cell Tumors: A Case Report

Journal of the Korean Society of Radiology
Hepatic perivascular epithelioid cell tumor (PEComa) are rare mesenchymal neoplasms. The limited number of reported cases, along with nonspecific clinical symptoms and laboratory findings, often complicates accurate preoperative diagnosis.
Pilwon Jeong, Jae Woon Kim, Joon Hyuk Choi   +2 more
doaj   +1 more source