Abstract
Two cases of spontaneous CSF otorrhea are presented. The initial presentation of both patients was the appearance of a serous otitis mediaa and persistent clear otorrhea following tube insertion. In one patient, a 50-year-old male, cerebrospinal fluid from tegmen defect was confirmed by surgery. The second patient, a 56-year-old female, was found to have the fistulas in the internal anditory meatus and the stapes foot plate, from which the fluid exuded.