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  • Title: [Flow cytometric analysis of DNA ploidy in intramucosal gastric carcinoma].
    Author: Nakano O, Fujimaki E, Yamashiki H, Fujino Y, Orii S, Sato K, Sato S, Sasaki K, Sugai T.
    Journal: Gan To Kagaku Ryoho; 1994 May; 21 Suppl 1():62-6. PubMed ID: 8203933.
    Abstract:
    In order to investigate whether or not DNA ploidy was altered in intramucosal gastric carcinomas, nuclear DNA content of biopsy specimen was measured using flow cytometry in 38 intramucosal carcinomas. DNA aneuploidy was detected in 27 of 38 lesions (71.1%), and noted more frequently in differentiated carcinomas than in undifferentiated ones (83.0% vs. 20.0%, p < 0.01). There was no significant relationship between the frequency of DNA aneuploidy and macroscopical type or tumor size. DNA aneuploidy was even found in two of three minute carcinomas (5 mm or less in diameter). DNA indices showed 1.2 or lower values in 40% of the lesions with DNA aneuploidy. The average value of DNA index was significantly larger in depressed type than in elevated type (p < 0.01). In conclusion, DNA ploidy is altered in most differentiated intramucosal carcinomas. A high resolution method is essential for accurate determination of DNA ploidy in intramucosal carcinomas, especially elevated ones.
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