<prompt> Which of the following statements about Von-Hippel Lindau syndrome is trueMultiple tumors are rarely seencraniospinal hemangioblastomas are commonSuperatentorial lesions are commonTumors of Schwann cells are common  <response>: Harrisons principles of internal medicine 17th edition. In VHL somatic mutation of normal allele leads to retinal angiomas, CNS hemangioblastoma,pheochromocytomas and multicentric clear cysts,hemangiomas and adenomas of kidney 