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sebaceous adenoma

Wednesday 16 June 2004

PO

Definition : Benign neoplasm composed of mature sebaceous lobules with the expansion of germinative basaloid cell layers at the periphery. It is associated with Muir-Torre syndrome, especially when it arises outside the head and neck region.

It is unrelated to adenoma sebaceum ( facial angiofibroma of tuberous sclerosis ).

Images

- Sebaceous adenoma

Differential diagnosis

- sebaceous hamartoma ( sebaceous nevus of Jadassohn )
- sebaceous hyperplasia
- sebaceoma
-  sebaceous carcinoma
- basal cell carcinoma with sebaceous differentiation
- trichoblastoma with sebaceous differentiation
- balloon cell melanoma

Predisposition

- Muir-Torre syndrome (MSI disease / MMR disease)

See also

- sebaceous tumors

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