Diagnostic difficulties in lesions of the minor salivary glands

A wide range of lesions arise from the intra-oral salivary glands, and often present a diagnostic challenge to specialists and generalists alike. Of the salivary neoplasms, pleomorphic adenoma is the most common, but its morphological diversity may bring several other entities to mind, notably polym...

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Published inDiagnostic histopathology (Oxford, England : 2008) Vol. 23; no. 6; pp. 250 - 259
Main Authors Khurram, Syed A., Barrett, A William, Speight, Paul M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2017
Subjects
cytogenetics
immunohistochemistry
mouth neoplasms
Pathology
salivary gland diseases
immunohistochemistry
salivary gland diseases
cytogenetics
mouth neoplasms
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Summary:A wide range of lesions arise from the intra-oral salivary glands, and often present a diagnostic challenge to specialists and generalists alike. Of the salivary neoplasms, pleomorphic adenoma is the most common, but its morphological diversity may bring several other entities to mind, notably polymorphous adenocarcinoma, particularly in a small incisional biopsy. Polymorphous adenocarcinoma in turn shares features with adenoid cystic carcinoma. Immunohistochemistry and molecular cytogenetic studies can assist diagnosis in the face of overlapping morphology. The other salivary neoplasms most likely to be encountered in the oral cavity are canalicular adenoma, mucoepidermoid carcinoma, secretory carcinoma and acinic cell carcinoma. Of the non-neoplastic conditions, necrotising sialometaplasia is most likely to be misdiagnosed as neoplastic on both clinical and histological grounds. However, careful consideration of the clinicopathological features of an adequate tissue specimen will enable correct diagnosis.
ISSN:1756-2317
DOI:10.1016/j.mpdhp.2017.04.008