Frontal convexity primary lymphoma masquerading meningioma: a case report and review of literature.

Primary non-Hodgkin's lymphoma of the skull with extra- and intracranial extension without systemic or skeletal manifestation in a nonimmunocompromised patient is extremely rare. These lesions often cause difficulty in diagnosis because they mimic other conditions. We report a case of primary lymphoma involving scalp, skull vault, meninges and invading the brain parenchyma and masquerading clinically and radiologically as a meningioma.