| Normal sebaceous gland
|
Etiology
•N/A
|
Pathogenesis
•N/A,
|
Epidemiology
•N/A
|
General Gross Description
•N/A
•Examples:
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General Microscopic Description
•Sebaceous glands occur in most areas of the skin
closely attached to the hair follicle.
•Particular areas of skin such as the forehead and the
area around the nose are particularly rich in sebaceous
glands.
•Each gland is a fraction of a millimeter in diameter
and consists of a large round acinus attached to the
hair follicle by a very short duct.
•In cross section, the acinus has a single layer of
cuboidal cells in the periphery and large empty looking
cells with pyknotic nuclei towards the center.
•The larger cells are derived from the smaller cells by
the accumulation of lipid.
•The empty looking cells, which are in fact filled with
lipid, are shed into the hair shaft and empty on to
the surface of the skin to give rise to the oily secretion
characteristic of these glands.
•Examples:
|
Clinical Correlation
•N/A
|
References
Bloom and Fawcett: A textbook of Histology. 12th
Edition. New York: Chapman & Hall. 1994. pp 546
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| Normal sebaceous gland
| | Synopsis by: T.V.Rajan, M.D., Ph.D. (T01310M00100)[569]
| |