Ovary tumor
Other tumors not specific to ovary
Sebaceous adenoma

Topic Completed: 1 March 2015

Revised: 14 February 2019

Copyright: 2002-2019, PathologyOutlines.com, Inc.

PubMed Search: Sebaceous adenoma [title]

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Cite this page: Gupta N Sebaceous adenoma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/ovarytumorsebaceousadenoma.html. Accessed September 24th, 2019.
Definition / general
  • Benign sebaceous tumor, usually on head and neck (Pathology 1987;19:204), often associated with Muir-Torre syndrome
  • Single case is reported in ovary arising within an ovarian mature cystic teratoma in a patient with Muir-Torre syndrome (Ann Diagn Pathol 2012;16:485), an autosomal dominant disorder characterized by neoplasms of skin (sebaceous adenoma, sebaceous epithelioma, sebaceous carcinoma or keratoacanthoma) and a GI / GU / gyn malignancy (eMedicine)
Prognostic factors
  • Complete excision is curative
Microscopic (histologic) description
  • Incompletely differentiated sebaceous lobules, irregular in size and shape
  • Undifferentiated basaloid cells peripherally and mature sebaceous cells centrally
Microscopic (histologic) images
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Various images

Positive stains
Negative stains
Differential diagnosis
  • Sebaceous hyperplasia: < 5 mm; associated with hair follicles
  • Sebaceoma: basaloid cells predominate over mature sebocytes
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