Primary lymphomas of the cranial vault are rare; only six patients hav
e been described in the literature. We report a 75-year-old woman who
was admitted to our hospital after a focal seizure. CT showed a homoge
neous mass which, on contrast enhancement, was similar to a meningioma
. The tumour was excised and found to be a cen troblastic, centrocytic
non-Hodgkin's lymphoma. Treatment was completed with radiotherapy and
chemotherapy.