Results 51 to 60 of about 4,957,056 (152)

A Case of Primary Intramedullary Infantile Fibrosarcoma With an RBPMS::NTRK3 Fusion and Response to Larotrectinib

Neuropathology and Applied Neurobiology, Volume 52, Issue 5, October 2026.
We report a case of primary intramedullary infantile fibrosarcoma (IFS) in a 4‐week‐old infant with rapidly progressive cervical myelopathy. Histology showed a spindle cell tumour with diffuse S100 and pan‐TRK expression. RNA sequencing identified an RBPMS::NTRK3 fusion.
Mégane Le Quang, Julie Tandonnet, Nathalène Truffaux, Lucile Vanhersecke, Jean Delmas, Arthur Durouchoux, Dorian Bochaton, Arnault Tauziède‐Espariat, Guillaume Chotard   +8 more
wiley   +1 more source

Case Report: A Rare Case of a Ventricular Perivascular Epithelioid Cell Tumor With Histologic Characteristics That Resembled a Primary Cardiac Rhabdomyoma

Frontiers in Cardiovascular Medicine, 2021
We present the case of a young male patient with an initial diagnosis of a rhabdomyoma that was surgically treated at a different hospital when he was 17. After a 2-year disease-free period, the patient presented another intra-cardiac mass.
Jorge Cossío-Aranda, Alberto Aranda-Frausto, Joaquin Berarducci, Nilda Espinola-Zavaleta, Laila González-Melchor, Clara Vázquez-Antona, Gabriela Meléndez-Ramirez, Javier Ivan Armenta-Moreno, Candace Keirns   +8 more
doaj   +1 more source

Placental Site Trophoblastic Tumor Acquires Immune Functions by Incorporating Host Maternal Genes

Advanced Science, Volume 13, Issue 50, 7 September 2026.
PSTT cells, through cell fusion with B cells, incorporate abundant non‐inherited maternal genes that are detectable by DNIMA. These hybrid cells acquire immunotherapy‐resistant genetic changes and increase the expression of B cell‐derived immune‐related molecules such as Ig, HLA, LILRB, SIGLEC10, and so on, creating an immunotolerant environment around
Kyosuke Kagami, Masanori Ono, Yasunari Mizumoto, Tatsuhito Kanda, Takashi Iizuka, Takiko Daikoku, Shin‐ichi Horike, Akira Hattori, Akihito Horie, Sachiko Minamiguchi, Tomoko Fujiwara, Kazuyoshi Hosomichi, Atsushi Tajima, Hirokazu Usui, Kaoru Abiko, Hiroshi Fujiwara   +15 more
wiley   +1 more source

Bladder Perivascular Epithelioid Cell Tumor: A Novel Rare Neoplasm

, 2011
Perivascular epithelioid cell tumors (PEComas) have recently been defined as a group of neoplasms that have in common the co-expression of melanocytic and smooth muscle markers.
Athanasios G. Papatsoris, Dimitris Staios, Dimitra Kyrou   +2 more
core   +1 more source

Behind the Peritoneum: A Case Report of Rare Retroperitoneal PEComa [PDF]

Journal of Clinical and Diagnostic Research
The Perivascular Epithelioid Cell tumours (PEComas) are exceptionally infrequent tumours arising from mesenchyme, distinguished by epithelioid appearance and myomelanocytic markers’ expression of the proliferating perivascular cells. These tumours can be
Vaishnavi Kumar, Kalaivani Amitkumar, Nivethitha Sridharan   +2 more
doaj   +1 more source

A Rare Case of Auricular Angiolymphoid Hyperplasia With Eosinophilia Associated With Chronic Hearing Aid Use

Clinical Case Reports, Volume 14, Issue 9, September 2026.
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.
Ayat Shawish, Maher Raslan, Reem Khabbaza, Mohammad Adib Houreih, Moatasem Hussein Al‐Janabi, Fouz Hassan   +5 more
wiley   +1 more source

Primary perivascular epithelioid cell tumor of the liver not related to hepatic ligaments: hepatic PEComa as an emerging entity [PDF]

, 2008
Primary perivascular epithelioid cell tumor (PEComa) of the liver is a very rare example of an emerging family of hepatic PEC tumors. Only few cases have been described so far.
Candinas, Daniel, Berger, B, Kappeler, Andreas, von der Brelie, Christian, Berger, Barbara, von der Brelie, C, Zimmermann, A, Zimmermann, Arthur, Candinas, D, Kappeler, A   +9 more
core  

Sustained response to pembrolizumab in recurrent perivascular epithelioid cell tumor with elevated expression of programmed death ligand: a case report

, 2021
Background: Perivascular epithelioid cell tumors are defined by the World Health Organization as “a collection of rare mesenchymal tumors composed of histologically and immunohistochemically distinctive perivascular epithelioid cells.” Whereas localized ...
Yiu, K., Sanders, L.J., McBride, A., Cranmer, L.D., Kraft, A.S., Kuo, P.H., Garcia, A.J., Kay, M.   +7 more
core   +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

Perivascular epithelioid cell

, 1996
Description of a new cell type: Perivascular epithelioid ...
Bonetti F., Martignoni G, ZAMBONI, Giuseppe, Pea M   +3 more
core   +1 more source