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spin·dle cell car·ci·no·ma
a carcinoma composed of elongated cells, frequently a poorly differentiated squamous cell carcinoma that may be difficult to distinguish from a sarcoma.
Synonym(s): sarcomatoid carcinoma
spindle cell carcinomaA carcinoma—often squamous cell—which can occur on any epithelial surface (e.g., oral, anorectal, bladder, etc). The cells are spindled, simulate a sarcoma (but stain for cytokeratin), and usually are more aggressive than non-spindle cell carcinomas.
sarcomatoid carcinomaAn epithelial malignancy that can arise in any epithelial surface–eg, oral, anorectal, bladder, etc; the cells are spindled and simulate a sarcoma Diagnosis Keratin ID's by immunohistochemistry
A carcinoma that contains both epithelial and mesenchymal components. This cancer may arise from cells in the kidney, urinary bladder, or lung.
See also: carcinoma