The classification of prostate cancer

(1) latent prostate cancer: is defined as no prostate disease before symptoms and signs, autopsy after death was found by histopathological examination of primary adenocarcinoma of the prostate. Latent prostate cancer can occur in any part of, but the central area and peripheral areas often, and often differentiated adenocarcinoma. Foreign reports of its incidence rate is 15% ~ 50%. China Research Institute of Beijing Medical University reported urinary latent prostate cancer was 3 4%. Statistical studies have shown that latent prostate cancer may be related to environmental and genetic factors.

(2) sporadic prostate cancer: Clinical to benign prostatic hyperplasia as the main symptoms of benign prostatic hyperplasia in the resected tissue, histological examination revealed prostate cancer. Study the performance of their organizations for better differentiation of adenocarcinoma, tubular adenocarcinoma, and a screen-based adenocarcinoma-like, a small number of poorly differentiated adenocarcinoma was abroad sporadic prostate cancer incidence rate of 10% to 30%. National incidence rate has been reported for about 5%.

(3) occult prostate cancer: patients with no symptoms of prostate disease, but lymph node biopsy specimens for pathological examination confirmed prostate cancer. And after the prostate biopsy has been further confirmed. Such patients with serum prostate-specific antigen (PSA) and prostatic acid phosphatase level increased. PSA and biopsy done (or) PAP immunohistochemical staining were positive.

(4) clinical prostate cancer: clinical examination (DRE, ultrasound, CT or magnetic resonance, etc.) diagnosed with prostate cancer, and after a biopsy to confirm. Can also be used in patients with elevated serum PSA and PAP to assist in diagnosis. Most of DRE in patients with palpable prostate nodule, nodular prostate ultrasound appearance prompted not regular, low echo and echo uneven.