Transcochlear Approach
Transcochlear Approach
Fig.1 Schematic view of the area of bone removal in transcochlear exposure.
Fig.2 MRI shows tumour in the CP angle.
Fig.3 Blind closure of external auditory canal and subtotal petrosectomy is done. Posterior labyrinthectomy in progress. Mastoid and tympanic segments of facial nerve are decompressed.
Fig.4 IAC is deroofed. Facial nerve skeletonised from IAM to stylomastoid foramen. Picture shows exposure of greater superficial petrosal nerve which is divided before posterior rerouting of facial nerve. Single black arrow -Labyrinthine segment; Double black arrow – Geniculate ganglion; Black outline arrow -Tympanic segment.
Fig.5 Facial nerve is rerouted posteriorly. Cochlea and then clivus are drilled out.
Fig.6 Postoperative scan shows no residual tumour.
The Heart Of Clinic
Dr. C. Rayappa MBBS, DLO, FRCS(Edin)
SENIOR CONSULTANT
+91 44 3315 1105
Dr. C. Rayappa graduated from Madras Medical College, Chennai, India in 1982. He completed his post graduation in Otolaryngology (ENT)
The Heart Of Clinic
Dr. C. Rayappa MBBS, DLO, FRCS(Edin)
SENIOR CONSULTANT
+91 44 3315 1105
Dr. C. Rayappa graduated from Madras Medical College, Chennai, India in 1982. He completed his post graduation in Otolaryngology (ENT)