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Epithelioid Hemangioma of the Nasal Cavity: a Diagnostic Challenge.
Indian Journal of Surgical Oncology 2024 March
Epithelioid hemangioma also known as angio-lymphoid hyperplasia with eosinophilia is a rare benign vascular neoplasm of unknown etiology. It very rarely involves the nasal cavity. It always poses a diagnostic challenge for clinicians and is usually misdiagnosed as Kimura's, IgG4-related disease, or malignant vascular tumors. The present case report describes an extremely rare presentation of epithelioid hemangioma inside the left nasal cavity causing complete obstruction and nasal septal deviation towards the right side in a young male. Hematoxylin and eosin-stained sections depicted a lobular proliferation of small capillary-sized vessels lined by plump epithelioid endothelial cells surrounding central vessels and scattered around them. These cells had abundant eosinophilic to amphophilic cytoplasm and enlarged nuclei with fine chromatin and central nucleoli. On immunohistochemistry, CD34 and CD31 highlighted the vascular proliferation and epithelioid endothelial cells. Erythroblast transformation-specific (ETS)-related gene (ERG) showed strong nuclear positivity in neoplastic plump epithelioid endothelial cells. EH is a benign vascular proliferation, but a high chance of recurrence is seen if complete resection is not done. As a result, the treatment of choice is complete surgical excision with clear margins. The case highlights a non-conventional presentation of epithelioid hemangioma and the importance of histomorphological features in diagnosing this entity.
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