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Multifocal nodular oncocytic hyperplasia in parotid gland: a case report
Richa Goyal1, Arvind Ahuja, Nalini Gupta
1Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Background:
Multifocal nodular oncocytic hyperplasia (MNOH) is a rare lesion of the parotid gland. Fine needle aspiration cytology (FNAC) in MNOH has not been described previously to the best of our knowledge.
Case:
A 55-year-old woman presented with a lump at the left angle of her mouth for 2 months. Local examination revealed a hard, nontender parotid mass. FNAC revealed clusters as well as discretely lying oncocytic cells. cells at places showed moderate nuclear pleomorphism. The features were consistent with a diagnosis of oncocytic neoplasm neoplasm; however, because of pleomorphism, a suspicion of carcinoma was offered. The patient underwent superficial parotidectomy, and histopathology examination revealed it to be multifocal nodular oncocytic hyperplasia.
Conclusion:
MNOH is a rare nonneoplastic salivary gland lesion and should be considered in the differential diagnosis of oncocytic neoplasm on FNAC.