Page 822 - Atlas of Histology with Functional Correlations

concretions (4, 6, 8) increases with the age of the individual, and they may

become calcified.

Although the glandular epithelium (5) is usually simple columnar or
pseudostratified, there is considerable variation where the epithelium may be
squamous or cuboidal.

The excretory ducts of the prostatic glands (2) resemble the glandular
acini (1), and in the terminal portions, the ductal epithelium (2) is usually

columnar and stains darker before entering the urethra.

The fibromuscular stroma (7) also characterizes the prostate gland with
smooth muscle bundles (3) and the connective tissue fibers blending together in
the stroma (7).

FIGURE 20.17 ■ Prostate gland: glandular acini and prostatic concretions.
Stain: hematoxylin and eosin. Medium magnification.

FIGURE 20.18 | Prostate Gland: Prostatic Glands

with Prostatic Concretions

The prostate gland consists of prostatic glands (3) with variable size and shape.
The glandular epithelium also varies from simple cuboidal or columnar (2) to
pseudostratified epithelium. In older individuals, the secretory material in the

prostatic glands (3) precipitates to form prostatic concretions (1, 5). In this
photomicrograph, the smooth muscle fibers (4a) in the characteristic
fibromuscular stroma (4) are stained red, and the connective tissue fibers (4b)
are stained blue.

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