sarcomatoid transformation of a carcinoma histologically resembling a sarcoma.
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.
a spindle cell epithelioma on skin that has been exposed to irradiation.
pseudosarcomaA 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.