Low-grade fibromyxoid sarcoma (LGFMS) is very uncommon in the pediatric population with only 20% of reported cases under the age of 18. The youngest reported case to date has been in a 4-year-old child. Lesions are usually slow growing and asymptomatic, and locations described in children have included paravertebral, thigh and intrathoracic. Although benign in appearance, these lesions can behave aggressively, with local recurrence and distant metastases primarily to lungs. These lesions can be resistant to the usual chemotherapy and radiotherapy with surgical resection being the treatment of choice. We report a case of a 5-year-old boy who presented with a mass in the left buttock.
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http://dx.doi.org/10.1007/s00383-011-3024-z | DOI Listing |
Virchows Arch
December 2024
Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, 350 W. 11thStreet, Room 4086, Indianapolis, IN, 46202, USA.
Sclerosing epithelioid fibrosarcoma (SEF) was originally described as a peculiar variant of fibrosarcoma in 1995. Subsequent studies showed that conventional SEF was associated with both immunohistochemical expression of MUC4 and EWSR1/FUS gene rearrangements with CREB3L1 as the predominant fusion partner. Since then, a distinct group of fibrous tumors characterized by YAP1::KMT2A and KMT2A::YAP1 gene rearrangements and SEF-like morphology has been described.
View Article and Find Full Text PDFAm J Surg Pathol
January 2025
Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
The aim of the study was to report the outcome of primary localized low-grade fibromyxoid sarcoma (LGFMS), sclerosing epithelioid fibrosarcoma (SEF), and hybrid LGFMS/SEF (H-LGFMS/SEF). Patients with primary localized LGFMS, SEF, or H-LGFMS/SEF, surgically treated with curative intent from January 2000 to September 2022, were enrolled from 14 countries and 27 institutions. Pathologic inclusion criteria were predefined by expert pathologists.
View Article and Find Full Text PDFArch Pathol Lab Med
October 2024
From the Department of Pathology, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío, CSIC-Universidad de Sevilla, Seville, Spain (Salguero-Aranda, Perez, Vargas-Padilla, Beltrán-Povea, Delgado-Bellido, Marcilla, Civantos, de Álava, Díaz-Martín).
Ear Nose Throat J
October 2024
Department of Otorhinolaryngology-Head and Neck Surgery, The Lu An Hospital of Anhui Medical University, Lu An, Anhui, China.
Low-grade fibromyxoid sarcoma (LGFMS) represents an exceptionally rare soft-tissue tumor, challenging to diagnose, and notorious for relentless recurrence and proliferation postsurgical resection. Primary symptoms of LGFMS include nasal congestion and rhinorrhea, accompanied by cheek numbness and distension. In this article, we report the diagnosis and treatment of a case of low-grade LGFMS originating in the maxillary sinus (MS).
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