Micrograph of<unk>  in benign prostatic glands. H&E stain. Natural luminescence of<unk>  in the lumen of the prostate in ultraviolet light<unk>  (CA) (from the Latin meaning "starch-like bodies") is a general term for small hyaline masses found in the prostate gland, nervous system, lung, and sometimes in other organs of the body.<unk>  increase in number and size with advancing age, although this increase varies from person to person. In the nervous system, they are particularly abundant in certain neurodegenerative diseases. While their significance is largely unknown, some researchers have suggested that<unk>  play a role in the clearance of debris. The composition and appearance of<unk>  can differ in different organs. In the prostate gland, where they are also known as prostatic concretions,<unk>  are rich in aggregated protein that has many of the features of amyloid, whereas those in the central nervous system are generally smaller and do not contain amyloid.<unk>  in the central nervous system occur in the foot processes of astrocytes, and they are usually present beneath the pia mater, in the tissues surrounding the ventricles, and around blood vessels. They have been proposed to be part of a family of polyglucosan diseases, in which polymers of glucose collect to form abnormal structures known as polyglucosan bodies. Polyglucosan bodies bearing at least partial resemblance to human<unk>  have been observed in various nonhuman species. Micrograph of<unk>  (purple spheres) in the brain of a person with Alzheimer's disease. Combined Periodic acid-Schiff and silver stains. Bar = 50 microns (0.05 millimeters).
Corpora amylacea
Corpora arenacea
Vernix caseosa
Linea alba 
Acanthoma fissuratum
Cutis marmorata
Nevus flammeus nuchae
Acne aestivalis