Primary malignant non-Hodgkin's lymphoma of the skull vault in an immunocompetent patient

Immediate post-operative scan showed excision of lesion with edema [Figure 3]a. Histopathology revealed NHL of diffuse large B-cell type involving the dura and the overlying bone [Figure 4]a and b. The cells tested positive for CD 20 [Figure 4]c. The patient was HIV negative. [1] When the diagnosis of cranial vault lymphoma is confirmed through physical examination, complete blood counts, CT scans of chest and abdomen and bone marrow biopsy must be done to rule out systemic involvement.