Sinonasal tuberculosis: Report of three atypical cases.

Primary sinonasal/nasal tuberculosis is rare amongst the commonly seen cases of extrapulmonary tuberculosis. We report three cases, two of primary sinonasal tuberculosis and one case of nasal tuberculosis in otherwise healthy patients. The diagnosis was based on radiological and histopathological findings. Treatment with antitubercular drug therapy was successful in all three of them. Sinonasal region tuberculosis, despite its rarity, should be added to differential diagnosis of nasal and paranasal sinus disorders particularly with intractable symptoms. Radiological imaging and nasal endoscopy with biopsy should be supplemented for confirmation.