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J Investig Clin Dent. 2013 Nov;4(4):271-4. doi: 10.1111/j.2041-1626.2013.00152.x. Epub 2013 Feb 1.

Rhinosporidiosis in the parotid duct: a rare case report.

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  • 1Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, Odisha, India.


Endemic to South India and Sri Lanka, Rhinosporidiosis is a chronic granulomatous infection caused by an agent of uncertain taxonomy: Rhinosporidium seeberi. Although it commonly manifests as a proliferative nasal lesion, many cases of Rhinosporidiosis have been reported where it has appeared as an extranasal lesion. The reported extranasal sites include the eye, ear, trachea, and parotid duct. However, the involvement of the parotid duct is quite rare, even among extranasal sites. The case presented is an adult female from the non-endemic zone of East India with a proliferative mass in the parotid duct. Although Rhinosporidiosis was not taken into consideration in the clinical differential diagnosis, eventual histopathological diagnosis confirmed Rhinosporidiosis. As this appears to be the second case of Rhinosporidiosis in the parotid duct in East India in 4 years, we encourage clinicians to be flexible in the differential diagnosis of proliferative growth in the parotid duct, even in those from non-endemic areas.

© 2013 Wiley Publishing Asia Pty Ltd.


mucicarmine stain; parotid duct; periodic acid-Schiff stain; rhinosporidiosis; sporangium

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