ABSTRACT Purpose: To describe a rare malignancy involving the sinonasal cavities. To discuss the clinical, diagnostic, and treatment modalities. Study Design: A case report including histopathological, radiological analysis and review of literature. Method: A case report is described from a tertiary care centre. Histopathological and radiological details are reviewed. Results: This case report presents a 29 year old male with 3 days history of bleeding from the left nostril, blood stained saliva with post nasal discharge and head ache. Biopsy demonstrated poorly differentiated Angiosarcoma. On immune stains the tumor cells showed diffuse strong cytoplasmic membrane positivity with CD 31 and few cells are positive for CD34. FLI-1 is also positive. Conclusion: Angiosarcoma is a rare malignancy involving the sinonasal cavities. Multidisciplinary approach is essential to obtain clear diagnoses and appropriate treatment plans.
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