JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Benign prostatic hyperplasia (BPH), light micrograph. BPH, also called prostate enlargement, is a noncancerous increase in size of the prostate. It is an extremely common abnormality, with a frequency that rises progressively with age. BPH is characterized by proliferation of both stromal and epithelial elements, with resultant enlargement of the gland. BPH frequently appears as a nodular hyperplasia. Microscopically the hyperplastic nodules are composed of variable proportions of proliferating glandular elements. The nodules may contain cystic spaces, who dilated glandular elements.
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