Neupsy Key

Fig. 1.1 (a) A human skull from Peru dating to about 600 A.D. In the occipital bone is a trephination done for unknown reasons. The well-healed bony margins indicate the…

Fig. 15.1 Typical features CT: (a–c) unenhanced CT shows a well-defined, homogeneous hyperattenuated mass in the posterior fossa midline surrounded by vasogenic edema (asterisk), associated with hydrocephalus (yellow arrows). (d–f)…

Fig. 3.1 Suboccipital muscles. Stepwise dissection. (a) The right trapezius and sternocleidomastoid have been preserved. The left trapezius and sternocleidomastoid have been reflected along with the galea aponeurotica to expose…

Fig. 35.1 Diffuse astrocytoma, grade WHO grade II is characterized by a high degree of cellular differentiation Grossly, astrocytoma of the brain stem expands normal tissues in a fusiform fashion….

Fig. 31.1 MR anatomy of the brainstem. (a) Midline sagittal T2. Pontomesencephalic and pontomedullary sulci (black arrows). Limits of the basis pontis (white arrowheads), with the tegmentum pontis behind. Caudalmost…

Embryonal Tumors Medulloblastoma  Classic  Desmoplastic/nodular medulloblastoma  Medulloblastoma with extensive nodularity  Anaplastic medulloblastoma  Large-cell medulloblastoma CNS primitive neuroectodermal tumors (PNET)  CNS neuroblastoma  CNS ganglioneuroblastoma  Medulloepithelioma  Ependymoblastoma Atypical teratoid/rhabdoid tumor It mostly…

Fig. 16.1 Schematic drawing of the inferior medullary velum and its relationship with the fourth ventricle and cisterna magna Fig. 16.2 Schematic drawing of the tela choroidea (a) and inferior…

Fig. 48.1 Choroid plexus: normal shape and location. The rostral end of the choroid plexus locates at the fastigium and extends to caudal and lateral directions on the inferior velum….

Fig. 63.1 The four curvatures of the adult vertebral column: “cervical, thoracic, lumbar, and sacral.” Thoracic and sacral ones exist during fetal life and are called primary (1°) curvatures. The…

Fig. 21.1 Origin and classification of ependymomas. (a) Midfloor type. Sagittal T2-weighted image (a) shows tumor almost completely filling the fourth ventricle with a clear-cut cleavage with the vermis (arrowheads)….