“…PAs mainly originate close to the optic chiasm and hypothalamus, in the cerebellum, in the brainstem, and, less commonly, in the cerebral hemispheres and ventricles [4, 5]. Leptomeningeal dissemination (LMD) without malignant transformation of the primary tumor is rare and several case reports in the literature did or did not present LMD initially [1, 2, 4,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21]. The incidence of LMD in patients with PAs is indicated to range from 4% up to 12% [1, 8, 16, 22], which would possibly increase with the widespread use of MRI in cases of PAs to report leptomeningeal metastases.…”