Intracranial solitary plasmacytomas are extremely rare tumors and are often
misdiagnosed preoperatively. The authors report the successful treatment o
f a patient who harbored such a tumor involving both the falx and tentorium
; this is the second case reported. A 59-year-old woman suffered from a sei
zure disorder due to a falcotentorial lesion, which had been identified 3 y
ears earlier and was thought at the time to be an en plaque meningioma. Mos
t recently, the patient presented with symptoms of increased intracranial p
ressure and hemiparesis. Computerized tomography and magnetic resonance ima
ging of her head revealed progressive growth of the tumor. The patient unde
rwent partial resection of the tumor and chemo- and radiation therapies. In
tracranial plasmacytomas must always be included in a differential diagnosi
s because potential complete cure can he achieved using fairly conservative
treatment modalities.