<prompt> Most severe papilloedema is caused by-Pituitary tumorFrontal lobe tumorPosterior cranial fossa tumorMedulloblastoma  <response>: Ans. is c i.e., Posterior cranial fossa tumor Most severe papilledema due to increased ICT is seen in infratentorial posterior fossa midline tumors. o Medulloblastoma is a posterior fossa midline tumor. 