简介:ObjectivePorencephaliccystpresentingwithotologicinvolvementisuncommon.Onlyafewcaseshavebeenreported.Wereportararecaseofcerebrospinalfluid(CSF)otorrheacausedbyamassiveporencephaliccystencompassingthelefttemporalandoccipitallobes.TheCSFleakwasrepairedsuccessfullyusingatransmastoidapproachwithfacia,abdomenfatandfibringluetosealtheosseousdefectsinthesinoduralangle.AreviewoftheliteratureconcerningporencephaliccystandCSFotorrheaisalsopresented.