Rectal polyp with malignant transformation and early metastasis:  report of a case.
D006801:Humans; D008198:Lymph Nodes; D009369:Neoplasms; D016609:Neoplasms, Second Primary; D011127:Polyps / Q000473:pathology*; D012004:Rectal Neoplasms; D012007:Rectum
LYMPH NODES/neoplasms; POLYPI/pathology; RECTUM/neoplasms