title: Retrovesical myxoid leiomyosarcoma.
abstract: An elderly man with a retrovesical leiomyosarcoma is described. This unusual tumor showed a prominent myxoid stroma. The smooth muscle origin of the malignant spindle cells was confirmed by ultrastructural study. Review of the literature has not yielded a similar case.
mesh_terms: D000368:Aged; D006801:Humans; D007890:Leiomyosarcoma / Q000473:pathology* / Q000648:ultrastructure; D008297:Male; D001749:Urinary Bladder Neoplasms / Q000473:pathology* / Q000648:ultrastructure