title: A rare cause of constipation: obstructing small cell neuroendocrine carcinoma of the anal canal.
authors.affiliation: Department of Internal Medicine, Warren Alpert Medical School of Brown University, Rhode Island Hospital, 593 Eddy Street, Providence, RI, 02903, USA, rlee5@lifespan.org.
authors.forename: Raymond T
authors.initials: RT
authors.lastname: Lee
authors.forename: Jason
authors.initials: J
authors.lastname: Ferreira
authors.forename: Kenneth
authors.initials: K
authors.lastname: Friedman
authors.forename: Steven F
authors.initials: SF
authors.lastname: Moss
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D001005:Anus Neoplasms / Q000150:complications*; D018278:Carcinoma, Neuroendocrine / Q000150:complications*; D002289:Carcinoma, Non-Small-Cell Lung / Q000628:therapy*; D003248:Constipation / Q000209:etiology*; D017809:Fatal Outcome; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008175:Lung Neoplasms / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000150:complications*; D012007:Rectum