Burkitt-like lymphoma of the sphenoid sinus: case report.

Burkitt's lymphoma is a malignant endemic neoplasia with a mandibular localization, described for the first time in 1958, in African children. The World Health Organization classification recognises several variants of Burkitt's lymphoma; all are highly malignant B cell lymphomas. Besides Burkitt's sporadic, endemic lymphoma and Burkitt's lymphoma associated with AIDS, the World Health Organization classification includes an "atypical or pleomorphic" variant of Burkitt's lymphoma.