Steatocystoma L72.1

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Sebocystoma; Steatocystoma; Steatom

Definition
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Benign, nevoid, cystic adnexal tumor occurring singly or in plural ( steatocystoma multiplex) with differentiation of sebaceous glands.

Classification
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The very rare isolated occurrence as steatocystoma simplex must be distinguished from the autosomal dominant inherited clinical picture of steatocystoma multiplex.

Clinical features
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Cystic, skin-coloured tumour, a few millimetres to 1.0 cm in size, located deep dermal, which can empty sebaceous contents when punctured.

Histology
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Alternating large epithelial cyst, dermal and subcutaneous. Cyst wall with sawtooth-like cuticular horny layer. No stratum granulosum. Storage of sebaceous gland cells or of sebaceous azini. In the lumen there are corneal cell masses, sebum and often hair.

Therapy
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Excision without significant safety distance if cosmetically disturbing.

Note(s)
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Clinically and histologically there is an overlap with the appearance of eruptive vellus hair cysts (probably both clinical pictures are identical).

Literature
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  1. Brownstein MH (1982) Steatocystoma simplex. A solitary steatocystoma. Arch Dermatol 118: 409-411
  2. Kaur T et al (2003) Steatocystoma multiplex in four successive generations. J Dermatol 30: 559-561
  3. Marill FG, Vodov I (1972) Solitary sebocystoma of the forehead. Bull Soc Fr Dermatol Syphiligr 79: 27-28
  4. Patrizi A et al (1998) Persistant milia, steatocystoma multiplex and eruptive vellus hair cysts: variable expression of multiple pilolsebaceous cysts within an affected family. Dermatology 196: 392-396

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Last updated on: 29.10.2020