title: Primary mucinous adenocarcinomas and signet-ring cell carcinomas of colon and rectum.
abstract: Of 352 patients with colorectal carcinoma followed for a minimum of 5 years after surgery, 39 cases (11.1%; median age 60 years) had mucinous adenocarcinoma, and 4 (1.1%; median age 62 years) had signet-ring cell carcinoma. Mucinous carcinomas were most frequently located in the rectum (61.5%) and in the sigmoid colon (15.3%) and presented with stage C and D disease in 41 and 15% of the cases, respectively. Disease recurrence was more frequently observed in patients with mucinous (51.7%) or signet-ring lesions (100%) as compared with adenocarcinomas. Five-year survival was 45 (median 48 months), 28 (median 27), and 0% (median 15 months) in patients with adenocarcinomas, mucinous adenocarcinomas, and signet-ring cell carcinomas, respectively (p < 0.05). Mucinous carcinomas of the rectum had had a significantly worse prognosis (5-year survival 17%, median 33 months) as compared with adenocarcinomas of the same site (5-year survival 34%, median 25 months; p < 0.05).
authors.affiliation: Istituto di Patologia Chirurgica, Università di Genova, Italia.
authors.forename: G B
authors.initials: GB
authors.lastname: Secco
authors.forename: R
authors.initials: R
authors.lastname: Fardelli
authors.forename: E
authors.initials: E
authors.lastname: Campora
authors.forename: G
authors.initials: G
authors.lastname: Lapertosa
authors.forename: R
authors.initials: R
authors.lastname: Gentile
authors.forename: S
authors.initials: S
authors.lastname: Zoli
authors.forename: C
authors.initials: C
authors.lastname: Prior
mesh_terms: D000230:Adenocarcinoma / Q000401:mortality / Q000473:pathology; D002288:Adenocarcinoma, Mucinous / Q000401:mortality / Q000473:pathology*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018279:Carcinoma, Signet Ring Cell / Q000401:mortality / Q000473:pathology*; D002430:Cecal Neoplasms / Q000473:pathology; D003110:Colonic Neoplasms / Q000401:mortality / Q000473:pathology*; D015179:Colorectal Neoplasms / Q000401:mortality / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012004:Rectal Neoplasms / Q000401:mortality / Q000473:pathology*; D012189:Retrospective Studies; D012811:Sigmoid Neoplasms / Q000473:pathology; D016019:Survival Analysis; D015996:Survival Rate