Primary Sinonasal Clear Cell Carcinoma: Case Report.

UNLABELLED Primary sinonasal clear cell carcinoma is a rare neoplasm classified under malignant epithelial tumours of salivary gland - type carcinomas under World Health Organization (WHO) classification. We report a case which occurred on a 69 year old gentleman presented with epistaxis and nasal endoscopy examination showed tumour arising from the right ethmoid cells. Endoscopic excision of the tumour was done and histopathological examination revealed clear cell carcinoma. In addition, other secondary or primary sites of the lesion were excluded by clinical, immunohistochemical and radiological examinations. 10 months into the postoperative period, patient remains well without recurrence of the tumour. IN CONCLUSION We report a rare case of primary sinonasal clear cell carcinoma in addition to the limited literature available and emphasize the differentials with other probable tumour through meticulous microscopic examination and use of special immunostains.