title: Small-cell undifferentiated carcinoma of the colorectum.
authors.affiliation: Department of Pathology, George Washington University Medical Center, Washington, D.C. 20037.
authors.forename: J M
authors.initials: JM
authors.lastname: Orenstein
authors.forename: A M
authors.initials: AM
authors.lastname: Schwartz
mesh_terms: D018288:Carcinoma, Small Cell / Q000556:secondary / Q000648:ultrastructure*; D003110:Colonic Neoplasms / Q000648:ultrastructure*; D006801:Humans; D008113:Liver Neoplasms / Q000556:secondary / Q000648:ultrastructure*; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000648:ultrastructure*