pseudosarcoma

pseudosarcoma

 [soo″do-sahr-ko´mah] sarcomatoid transformation of a carcinoma histologically resembling a sarcoma.

pseu·do·sar·co·ma

(sū'dō-sar-kō'mă), A bulky polyploid malignant tumor of the esophagus, composed of spindle cells with a focus of squamous cell carcinoma; spindle cells may be epithelial or metaplastic malignant fibroblasts.

pseudosarcoma

A tumor mimicking a sarcoma, the significance of which differs according to site of origin Oral cavity Spindle cell carcinoma, a type of SCC. See Spindle cell cacinoma Soft tissue 1. Pseudosarcomatous fasciitis Nodular fasciitis;.2. Pseudo-KS, see there Urogenital tract Inflammatory pseudotumor A small, sessile and/or friable 'tumor' with ↑ cellularity and ↑ mitotic activity, which bleeds easily and occurs at the site of recent surgery to the bladder, prostate or vagina, representing a florid inflammatory response to a local insult. See Inflammatory pseudotumor. Cf Sarcoma.