Case History: A 45-year-old female presented with complaint of occasional headache for last three years. Family and past history were unremarkable. Neurological and systemic examinations were normal. Blood analysis was within normal limits and EEG did not show abnormal discharges.
Figure 1. T2W axial (A) and sagittal (B) MRI image show well defined intermediate to high signal intensity lesion in quadrigeminal cistern on right side (large white arrow) abutting inferior coliculus. The lesion does not cause mass effect or obstruct hydrocephalous and normal corpus callosum (small white arrow) in sagittal image.