Source:http://linkedlifedata.com/resource/umls/id/C0332326
NCI: A grading system for prostatic carcinoma based on the microscopic glandular architectural patterns of the malignant epithelial cells. Nuclear atypia is not evaluated. It defines five patterns or grades which reflect decreasing differentiation.,MSH: System of grading PROSTATE CANCER based on the degree of abnormality of the glandular archtecture of the tumor.