Skin nonmelanocytic tumor
Adnexal tumors
Sebaceous glands
Sebaceous adenoma
Author: Christopher S. Hale, M.D.
Topic Completed: 1 June 2012
Minor changes: 16 October 2020
Copyright: 2003-2021, PathologyOutlines.com, Inc.
PubMed Search: Sebaceous adenoma [title] skin
Table of Contents
Definition / general | Clinical images | Gross description | Microscopic (histologic) description | Microscopic (histologic) images | Differential diagnosisCite this page: Hale C. Sebaceous adenoma. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/skintumornonmelanocyticsebaceousadenoma.html. Accessed March 6th, 2021.
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-TorrÈ Syndrome (Histopathology 2010;56:133)
Clinical images
Contributed by Michael Inskip, M.B.Ch.B. and Mark R. Wick, M.D.
Various images
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
Contributed by Joel Pinczewski, M.D., Ph.D. and Mark R. Wick, M.D.
Sebaceous adenoma
Various images
Muir-Torre type
Images hosted on other servers:
Cystic features
Multilobular architecture
Differential diagnosis
- Sebaceous carcinoma
- Sebaceous hyperplasia
- Other lesions with sebaceous differentiation
