Ectopic Sebaceous Gland: A Developmental Anomaly

July 2006 in “ Journal of cutaneous pathology ”

Jaime A. Tschen, Keith E. Schulze, Nor Chiao

sebaceous gland anagen hair follicle acneiform eruption embryogenesis scalp hair follicles

TLDR A 21-year-old had a rare developmental anomaly with a misplaced sebaceous gland in a hair follicle.

In 2006, a case was reported involving a 21-year-old white male who had an ectopic sebaceous gland and duct within the bulb of an anagen hair follicle, which is a developmental anomaly. This finding was incidental and discovered during one of two biopsies from the patient's chin, which were conducted to investigate a persistent acneiform eruption around his mouth. The paper also reviewed the embryogenesis and development of sebaceous glands in human scalp hair follicles. According to the authors, this was the first reported instance of this particular developmental anomaly.

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