Myxoinflammatory Fibroblastic Sarcoma: New Case Report of a Rare Entity

Abstract

Myxoinflammatory fibroblastic sarcoma (MIFS) is a malignant mesenchymal tumor most commonly occurring in the distal extremities of adults, it generally behaves like a low-grade tumor but is still able to progress locally and metastasize to distant sites, rarely resulting in death. It is a tumor whose unusual morphology can lead to misdiagnosis, either in the non-neoplastic sense (infectious or inflammatory) or as another sometimes malignant tumor entity. The genetic abnormalities detected in MIFS are the t(1;10)(p22:q24) translocation, with rearrangements of TGFBR3 and MGEA5 genes associated with increased levels of FGF8, with chromosome 3 marker/ring formation, and amplification of the VGLL3 locus.