<prompt> Gleason score is used to grade:Prostate cancerTransitional Cell CAPenile cancerAnal cancer  <response>: Ans. a Prostate cancerRef: Bailey 27th Edition, Page 1469 Classification of histological pattern based on the degree of glandular de- differentiation and its relation to stroma has been devised by GLEASON. Prostate cancers exhibits heterogeneity within the tissue itself and hence two histological areas of prostate are scored each between 1- 5. The scores are added to an overall score of 2- 10. Gleason score 2- 10 helps to predict the likelihood of spread and prognosis Example: Gleason Score of 8-10: High Grade tumor, Poor Prognosis 