title: S-phase fractions and DNA-ploidy of oropharyngeal squamous epithelium carcinomas compared with histologic grade, stage, response to chemotherapy and survival.
abstract: DNA-ploidy and the percentage of S-phase fractions in 55 primary oropharyngeal squamous epithelium carcinomas were measured by DNA-Flow Cytometry (FCM). The data were compared with the histologic grade, the stage and the response of the tumours to cytostatic chemotherapy. A significant correlation was found between the histologic grade and the mean percentage of S-phase fractions (p less than 0.01). No correlation could be found between the FCM measurement data and the tumour stage. Carcinomas with an amount from 4.0 to 10.4% S-phase fractions responded to chemotherapy by complete remission, and those with 10.0 to 13.3% S-phase fractions by partial remission. The group of non-responders could be subdivided into two subgroups: non-responders with low amounts of S-phase fractions (1.1-3.9%), and non-responders with very high amounts of S-phase fractions (11.6-16.6%). FCM data, histologic and clinical prognostic factors were summed up to a prognostic score. The number of score points showed a significant correlation to the length of survival in months after diagnosis of the tumour (p less than 0.00001). FCM may be used as an additional diagnostic tool for a better biological characterization of the neoplastic tissue, especially as an aid for grading, prediction of the response to chemotherapy and the length of survival.
authors: Institute of Comparative and Experimental Pathology, University of Heidelberg, F.R.G.
authors: G E
authors: GE
authors: Feichter
authors: H
authors: H
authors: Maier
authors: D
authors: D
authors: Adler
authors: I A
authors: IA
authors: Born
authors: U
authors: U
authors: Abel
authors: D
authors: D
authors: Haag
authors: K
authors: K
authors: Goerttler
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000188:drug therapy / Q000235:genetics / Q000473:pathology*; D004273:DNA, Neoplasm; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007399:Interphase; D008297:Male; D008875:Middle Aged; D009959:Oropharyngeal Neoplasms / Q000188:drug therapy / Q000235:genetics / Q000473:pathology*; D010610:Pharyngeal Neoplasms / Q000473:pathology*; D011003:Ploidies
chemical_list: D004273:DNA, Neoplasm