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  • Title: Comparative clinicopathological study of intraoral sebaceous hyperplasia and sebaceous adenoma.
    Author: Azevedo RS, Almeida OP, Netto JN, Miranda AM, Santos TC, Della Coletta R, Lopes MA, Pires FR.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod; 2009 Jan; 107(1):100-4. PubMed ID: 19101492.
    Abstract:
    OBJECTIVE: The objective of this study was to compare the clinicopathological features of oral sebaceous hyperplasia and sebaceous adenoma. STUDY DESIGN: Clinical data, microscopical characteristics, and ki-67 immunoexpression were comparatively analyzed on 2 intraoral sebaceous adenomas, 6 intraoral sebaceous hyperplasias, and 21 normal intraoral sebaceous glands. RESULTS: Clinically, sebaceous glands presented as multiple separated papules, sebaceous hyperplasias as a single enlarged papule, and sebaceous adenoma as a well-defined nodule. Microscopically, sebaceous adenoma presented an increased number of lobules, smaller lobules, and a greater number of germinative/squamous cells. Sebaceous hyperplasia also had an increased number of lobules and fewer number of germinative/squamous cells, as compared to normal oral sebaceous glands. Ki-67 expression was seen only in germinative cells and counts were higher in sebaceous adenomas followed by hyperplasias and normal glands. CONCLUSIONS: Sebaceous hyperplasias and adenomas showed different clinical, microscopic, and proliferative characteristics, suggesting the usefulness of the studied criteria on diagnosis of these uncommon oral lesions.
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