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These experiences show that diagnostic teleconsultation and quantitative image analyses via the Internet are not only feasible, but practical, and allow a close collaboration between researchers widely separated by geographical distance and analytical resources.

This session included ®ve presentations in the areas of pathology of precursor lesions and carcinoma of the prostate, the value of determining neovascularity in the diagnosis and staging of prostate cancer, new`molecular' markers, correlation between pre-and postoperative Gleason scores and a study dealing with transition zone PSA density. The abstracts and talks are summarized in the next few pages.Keywords: prostate cancer; prostatic intraepithelial neoplasia; pathology; molecular markers Pathology of premalignant lesions and carcinoma of the prostate WA SakrWhile the presentation discussed the anatomy and normal histology of the prostate and the morphologic changes of nodular hyperplasia, metaplastic processes and the changes associated with therapy effects, the limited scope of this summary will restrict the discussion to the pathology of neoplastic changes: Premalignant lesions (high grade PIN in particular) and the diagnosis, grading and staging of prostate cancer.

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