Case Report. Pseudosarcomatous Fibromyxoid Tumor of the Bladder: Biphasic Contrast-Enhanced Helical CT Findings

Abstract

We report a case of pseudosarcomatous fibromyxoid tumor of the bladder in a 23-year-old man with a 2 month history of painless gross hematuria, which was studied by biphasic contrast-enhanced helical CT. CT demonstrated a 2 cm diameter polypoid enhancing mass in the anterior bladder wall. The lesion measured 103 and 91 HU on early and delayed images, respectively. Increased contrast enhancement was attributed to a histologically highly vascular myxoid stroma.

Inflammatory myofibroblastic tumour: an imaging dilemma (2010: 5b)

“…In children, IMFT may clinically mimic and even pathologically resemble rhabdomyosarcoma [1][2][3]. The radiological appearances of inflammatory pseudotumour are also nonspecific and can mimic more malignant counterparts [1,2,4].…”

Coexistence of inflammatory pseudotumour and pseudomembranous cystitis: a histopathological surprise

“…IP is characterised histologically by the presence of acute and chronic inflammatory cells with a variable fibrous response. The radiological appearance of inflammatory pseudotumour is non-specific and cannot be easily differentiated from a malignant neoplasm 7 8…”

Effect of electron donors on 1,3‐butadiene polymerization by a Ziegler–Natta catalyst based on neodymium

“…Despite having a more benign clinical course, the aggressive appearance of IMFT might resemble other more malignant entities. In children, IMFT may clinically mimic and even pathologically resemble rhabdomyosarcoma 3–5; however, diagnosis can be confirmed histologically by routine light microscopy or even immunohistochemistry and electron microscopy when the former is deficient.…”

“…Previous studies have carefully described the pathology of IMFT 9–11 which is similar to the findings in our series. The literature on radiological appearance of IMFT is far less though what have been described, to date, is non‐specific and very often cannot be differentiated from a malignant neoplasm 3, 4. On CT, Kim reported a case of IMFT appeared as a broad‐based enhancing centrally necrotic mass involving the bladder wall, and extended to the perivesical soft tissues and the rectus abdominus muscle.…”