Benign Prostatic Hypertrophy. Transrectal axial US view through the midprostate demonstrates excellent differentiation of a normal peripheral zone (pz, solid arrows). The inner gland (IG) demonstrates mild enlargement and heterogeneity that is characteristic of benign prostatic hypertrophy. A small prostatic cyst is evident (open arrow). The hypoechoic fibromuscular zone (FM) is anterior. A, anterior; P, posterior.

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