Marginal zone lymphoma: headache. There is no recurrent orbital tumor or abnormal enhancement. There are post-surgical findings in the left cranium and scalp without residual abnormal dural enhancement or edema in the temporal lobe. There is no acute infarct. There is an unchanged expanded partially empty sella. There is a persistent ovoid cerebrospinal fluid signal intensity collection that measures up to 25 mm in length within the left frontal sinus with mild surrounding enhancement and an apparent defect in the overlying skull base, with distortion and signal abnormality of the subjacent brain parenchyma. There is mild diffuse mucosal inflammation within the bilateral mastoid air cells.
1. No recurrent orbital tumor or abnormal enhancement. 2. Post-surgical findings in the left hemisphere, without evidence of tumors in this region.3. Expanded, partially empty sella, which can be a manifestation of pseudotumor cerebri.4. Persistent left frontal sinus cephalocele.5. Mild diffuse mucosal inflammation within the bilateral mastoid air cells. 