title: DNA ploidy of colorectal carcinoma by tumour site, gender and history of noncolorectal malignancies.
abstract: DNA ploidy was analysed by flow cytometer from frozen samples of 205 colorectal carcinomas. Sixty-two percent of the tumours had an abnormal DNA stemline. Forty-eight percent of carcinomas in the right colon, 62% of carcinomas in the left colon and 74% of carcinomas in the rectum were aneuploid (p = 0.007). Sixty-nine percent of tumours in males and 55% of tumours in females were aneuploid (p = 0.029). The difference in frequency of aneuploidy between females and males was greatest in tumours of the right colon, where 37% of the tumours in females and 62% of the tumours in males were aneuploid (p = 0.047). The percentage of diploid colorectal carcinomas was higher (55%) in patients with a history of noncolorectal malignancy than in others (34%, p = 0.031). These results suggest that flow cytometry may be helpful in understanding the development of colorectal carcinomas.
authors.affiliation: Department of Radiotherapy and Oncology, Helsinki University Central Hospital, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Kouri
mesh_terms: D000368:Aged; D000782:Aneuploidy; D003110:Colonic Neoplasms / Q000235:genetics / Q000473:pathology; D015179:Colorectal Neoplasms / Q000235:genetics* / Q000473:pathology; D004273:DNA, Neoplasm / Q000032:analysis*; D004171:Diploidy; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000235:genetics / Q000473:pathology; D012737:Sex Factors
chemical_list: D004273:DNA, Neoplasm