45 year male patient with cerebellar signs.D.D. today operated and it is epidermoid

12 y/o WF with 2 mo hx of increasing headache and upper cervical pain, recent disequilibrium, double vision, and slowing speech. Family hx of father dying of brain tumor at age 25. Abnormal gait falling to the right seen nd Minimal 1mm pupil asymmetry. MR images are given. Comment on the case.

18yrs/F with Chronic LBA, Progressive lower limb weakness and sensory impairment,patent sphincter control, sensory level below umblicus,B/l Babinski,power grade 4.DIAGNOSIS AND APPROACH??

HISTOPATHOLOGICAL IDENTIFICATION OF BRAIN TUMORS 1. GLIOBLASTOMA MULTIFORME Pseudopallisading cells( cells lining up around necrosis) 2. EPENDYMOMA Perivascular pseudorosettes/rosettes ( tumor cells surrounding vessels) 3.MEDULOBLASTOMA Small cell blue Tumor with HOMER- WRIGHT Rosettes (halo of cells surrounding neuropil containing central region) 4. OLIGODENDROGLIOMA Fried egg appearance. This is the normal appearance of Oligodendrocytes, however, increase in Oligodendrocytes must raise the suspicion of Oligodendroglioma. 5. PILOCYTIC ASTROCYTOMA Rosenthal fibres- eosinophilic(pink) bodies 6. HEMANGIOBLASTOMA thinning of capillaries with minimally intervening parenchyma. Also, increase in erythropoetin production 7. MENINGIOMA Whorled pattern with Psammoma bodies ( dystrophic calcification)

A 27 yr male presented with headache, nausea, and worsening lethargy over the last month. Brain MR images are attached below. Diagnose the MRI.