<prompt> True statement regarding Brain Tumor in children is -Mostly is infra - tentorialPapilledema is rareIs the most common tumour in childrenHydrocephalus is rare  <response>: Ans. is a i.e., Mostly is infra-tentorial Brain tumors in children o Brain tumors are the second most common malignancy of childhood next only to leukemia. o Brain tumors are the most common solid cancer of childhood. o Over two-thirds of brain tumors are infratentoterial. o Most of these tumor occur near the midline -- commonly obstruct CSF circulation and cause hydrocephalus early in disease. These can also cause T ICT and papilledema In infants papilledema may be absent because of open sutures and bulging fontanelle. o There is age related differences in primary location of tumor - 1 Infant Is year of life ---Mostly supratentorial, most common are choroidal plexus tumor and teratoma. 2 1-10 years -- Mostly infratentorial, most common are medulloblastoma and cerebellar astrocytoma juvenile pilocytic astrocytoma. 3 After 10 years -- mostly supratentorial, most common is diffuse astrocytoma. 