This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Pathology
Gleason scoring is used for- 
Select and explain. 
A. Carcinoma testis, B. Carcinoma colon, C. Carcinoma thyroid, D. Carcinoma prostate
D: Carcinoma prostate
Answer: D: Carcinoma prostate 
Explanation: Gleason's microscopic grading system which is based on two features:i) Degree of glandular differentiation.ii) Growth pattern of the tumor in relation to the stroma.These features are assessed by low-power examinationof the prostatic tissue. For clinical staging of prostate cancer,TNM system is considered an international standard. HARSH MOHAN Textbook of pathology 6th edition pg no 720