Skin - Nonmelanocytic tumors
Adnexal tumors - sebaceous glands
Sebaceous adenoma

Author: Christopher Hale, M.D. (see Authors page)

Revised: 11 March 2016, last major update June 2012

Copyright: (c) 2003-2015, PathologyOutlines.com, Inc.

PubMed Search: Sebaceous adenoma [title] skin
Definition / General
  • Hyperplasia of sebaceous lobules with expasion of germinative basaloid cell layers at periphery
  • Unrelated to adenoma sebaceum (facial angiofibromas of tuberous sclerosis)
  • Associated with Muir-TorrĂˆ Syndrome (Histopathology 2010;56:133)
Clinical Images

Images hosted on PathOut server:

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c/o Dr. Michael Inskip

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C/o Dr. Mark R. Wick



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Muir-Torre syndrome

Gross Description
  • Papule / nodule on face / scalp
Micro Description
  • Nodular lobulated growth with dark and light areas corresponding to generative cells (dark) and sebaceous cells (light) with cytoplasmic lipid vacuoles
  • Not as organoid as sebaceous hyperplasia
Micro Images

Images hosted on PathOut server:

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c/o Joel Pinczewski, MD PhD,
Australia

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Courtesy of Dr. Mark R. Wick

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Muir-Torre type, c/o Dr. Mark R. Wick



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Cystic features

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Multilobular architecture

Differential Diagnosis