Chapter 16 The male reproductive system/Fig 16.08.jpg

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Benign nodular hyperplasia of the prostate. Hypertrophy of the central portion of the gland (middle lobe) projects into the base of the bladder. Obstruction of urinary flow has produced hypertrophy of muscle of bladder wall, giving this trabeculated appearance and also a degree of ureteric dilatation and hydronephrosis.