Recently, the stromal invasion grading system was proposed for small adenocarcinomas of ≤2.0 cm. The system is based on the presence or absence of a fibrotic focus, and the extent of invasion into the ...

In the last three-quarters of the 20th century, over 40 histologic grading systems for prostatic carcinoma have been proposed (reviewed in Humphrey 4). These systems have typically utilized ...