| sebaceous tubercle | A small subepidermal keratin cyst, usually multiple and therefore commonly referred to in the plural. Synonym: sebaceous tubercle, tuberculum sebaceum, whitehead. Origin: L. Millet (05 Mar 2000) |
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| senile sebaceous hyperplasia | Hyperplasia of mature sebaceous glands, forming a nodule on the skin of the face or forehead in elderly persons. (05 Mar 2000) |