Exploratory operation in a patient with spontaneous temporal bone cerebrospinal fluid leaks: A case report

Figure 1 Preoperative high-resolution computed tomography image of the temporal bone. A: Left temporal bone and mastoid process (affected side). A rough and damaged bony structure of the petrous part of the temporal bone, with fluid accumulation in the left mastoid process, left middle ear, and external ear canal was observed; B: Right temporal bone and mastoid process (healthy side). White arrows indicate suspected bone defect locations.