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Rivista di Medicina Interna
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,6
Panminerva Medica 2002 Settembre;44(3):213-20
Prostatic intraepithelial neoplasia and prostate cancer
Montironi R., Santinelli A., Mazzucchelli R.
Department of Pathology and Laboratory University of Ancona School of Medicine Torrette di Ancona, Ancona, Italy
Prostatic intraepithelial neoplasia (PIN) is composed of dysplastic cells with a luminal cell phenotype, expressing the androgen receptor as well as prostate specific antigen. PIN is characterized by progressive abnormalities of phenotype which are intermediate between normal prostatic epithelium (NP) and cancer, indicating impairment of cell differentiation and regulatory control with advancing stages of carcinogenesis. High-grade PIN is considered the most likely precursor of prostatic carcinoma (PCa), according to virtually all available evidence. Androgen deprivation decreases the prevalence and extent of PIN and the degree of capillary vascularization (e.g., angiogenesis) in the surrounding stroma via the suppression of vascular endothelial growth factor (VEGF) production. It is likely that PCa might also arise from precursor lesions other than high-grade PIN (low-grade PIN, atypical adenomatous hyperplasia, malignancy-associated foci, and atrophy).