This is a female patient, 56 years old, with apparent previous good health, who suffers an episode of focal seizure in the upper arm.  Neurological and CAT evaluations demonstrate a cerebral mass of mixed aspect, solid and cystic.  The patient underwent surgery with resection of the mass without major complications.  Gross examination of the specimen shows a  nodular and cystic mass of 2 x 1.5 x 1 cm in maximal dimensions.  After sectioning, there is a small central cavity with a wall of up to 4 mm in thickness.

4 images of the cystic lesion are presented
[See Histology]