Skin nonmelanocytic tumor
Adnexal tumors - sebaceous glands
Sebaceous adenoma


Topic Completed: 1 June 2012

Revised: 4 April 2019

Copyright: 2003-2015, PathologyOutlines.com, Inc.

PubMed Search: Sebaceous adenoma [title] skin

Christopher S. Hale, M.D.
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Page views in 2019 to date: 5,757
Cite this page: Hale C. Sebaceous adenoma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/skintumornonmelanocyticsebaceousadenoma.html. Accessed June 25th, 2019.
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
Microscopic (histologic) 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
Microscopic (histologic) 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
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