title: Leiomyoma of the sigmoid colon.
mesh_terms: D003094:Collagen; D012809:Colon, Sigmoid / Q000098:blood supply; D006801:Humans; D007238:Infarction / Q000473:pathology; D007889:Leiomyoma / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D008938:Mitosis; D009336:Necrosis / Q000473:pathology; D012811:Sigmoid Neoplasms / Q000473:pathology / Q000601:surgery*
chemical_list: D003094:Collagen