Oral surgery, oral medicine, oral pathology and oral radiology · 2020
A clinicopathologic study of secretory carcinoma of minor salivary gland: a series of 4 cases and diagnostic considerations.
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Owosho Adepitan A, Tyler Donald, Summersgill Kurt F
Аннотация
OBJECTIVE: Secretory carcinoma (SC) of salivary gland is a recently described low-grade malignant neoplasm of the salivary gland, characterized by rearrangement of the ETV6 gene. SC of salivary gland shares striking morphologic, immunophenotypic, and molecular similarity to SC of breast.
STUDY DESIGN: We report the clinicopathologic features of 4 ETV6-rearranged SCs of minor salivary gland and histopathologic diagnostic considerations.
RESULTS: Two cases were located in the lip, 1 in the soft palate, and 1 in the mandibular vestibule. No patient presented with regional or distant metastases at diagnosis. All cases were positive for S100 protein and mammaglobin, and all cases were negative for p63. All cases were positive for ETV6 rearrangement.
CONCLUSIONS: SC of the minor salivary glands are rare. Because of its shared histopathologic features with other salivary gland tumors, positivity for ETV6 gene rearrangements is recommended before rendering a diagnosis of SC of salivary gland.
STUDY DESIGN: We report the clinicopathologic features of 4 ETV6-rearranged SCs of minor salivary gland and histopathologic diagnostic considerations.
RESULTS: Two cases were located in the lip, 1 in the soft palate, and 1 in the mandibular vestibule. No patient presented with regional or distant metastases at diagnosis. All cases were positive for S100 protein and mammaglobin, and all cases were negative for p63. All cases were positive for ETV6 rearrangement.
CONCLUSIONS: SC of the minor salivary glands are rare. Because of its shared histopathologic features with other salivary gland tumors, positivity for ETV6 gene rearrangements is recommended before rendering a diagnosis of SC of salivary gland.