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There are several reasons why PIN is the most likely prostate cancer precursor. [3] PIN is more common in men with prostate cancer. High grade PIN can be found in 85 to 100% of radical prostatectomy specimens, [4] nearby or even in connection with prostate cancer. It tends to occur in the peripheral zone of the prostate.
Prostate cancer is the most diagnosed cancer in men in over half of the world's countries, and the leading cause of cancer death in men in around a quarter of countries. [92] Prostate cancer is rare in those under 40 years old, [93] and most cases occur in those over 60 years, [2] with the average person diagnosed at 67. [94]
Benign prostatic hyperplasia (BPH), also called prostate enlargement, is a noncancerous increase in size of the prostate gland. [1] Symptoms may include frequent urination , trouble starting to urinate, weak stream, inability to urinate , or loss of bladder control . [ 1 ]
In perineural invasion, cancer cells proliferate around peripheral nerves and eventually invade them. Cancer cells migrate in response to different mediators released by autonomic and sensory fibers. Tumor cells secrete CCL2 and CSF-1 to accumulate endoneurial macrophages and, at the same time, release factors that stimulate perineural invasion.
Endogenous stones: These are small stones formed within the acini of the prostate. They have a higher correlation with age. [3] Extrinsic stones: These stones are usually larger and formed due to the reflux of urine into the prostate. [3] The exact mechanism of the development of prostatic calculi is still unclear. [3]
Dr. Narayanan says that bone pain can also be a sign of prostate cancer recurrence in patients who have already had the disease. The link between prostate cancer and bone pain may be a surprising one.
The prostatic urethra, the widest and most dilatable part of the urethra canal, is about 3 cm long.. It runs almost vertically through the prostate from its base to its apex, lying nearer its anterior than its posterior surface; the form of the canal is spindle-shaped, being wider in the middle than at either extremity, and narrowest below, where it joins the membranous portion.
The diagnosis of IgG4-related prostatitis could be made from histological examination if prostate biopsy or surgery has been performed. [6] The hallmark histopathological features of established IgG4-related disease are storiform fibrosis, a dense lymphoplasmacytic (lymphocytes and plasma cells) infiltrate rich in IgG4-positive plasma cells, and obliterative phlebitis.