title: Fibroma of rectum simulating malignant tumor. Case report.
mesh_terms: D003937:Diagnosis, Differential; D005350:Fibroma / Q000175:diagnosis*; D006484:Hemorrhoids / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis*