3 Transmastoid Approaches Closed Tympanoplasty (Figs. 3.1–3.18) Indications • Cholesteatoma in children and in patients with highly pneumatized mastoids. • Chronic otitis media without cholesteatoma, when exploration of the mastoid…
4 Translabyrinthine Approaches Basic Translabyrinthine Approach (Figs. 4.1–4.47) Indications • Removal of cerebellopontine angle lesions when hearing preservation is not a concern, as follows: (a) Acoustic neurinoma: –With unserviceable preoperative…
2 Anatomy of the Temporal Bone The temporal bone actually consists of four fused parts—the squamous, tympanic, mastoid, and petrous bones. Squamous Bone The squamous part of the bone represents…
9 Infratemporal Fossa Approaches Infratemporal Fossa Approach Type A (Figs. 9.1–9.31) Indications • Lesions of the jugular foramen: –Types C and D glomus jugulare tumors. –Lower cranial nerve schwannomas and…
8 Modified Transcochlear Approach (Type A) Indications • Extradural lesions: extensive petrous apex lesions with preoperative facial nerve and inner ear loss of function, e.g.: –Petrous bone cholesteatoma of the…
5 Middle Cranial Fossa Approaches Basic Middle Cranial Fossa Approach (Figs. 5.1–5.34) Indication This approach is indicated for pathologies that present with preoperatively preserved hearing in the following manner: •…
7 Transotic Approach Indications • Some cases of cerebellopontine angle tumor with anterior extension and normal facial nerve function preoperatively (e.g., epidermoids). • Some cases of petrous bone cholesteatoma. •…
6 Retrosigmoid–Retrolabyrinthine Approach Indications • Hearing preservation surgery for small vestibular schwannomas (less than 2 cm) with absence of involvement of the fundus of the internal auditory canal. • Hearing…
1 Temporal Bone Dissection Laboratory Surgical Instruments A minimum set of surgical instruments is needed in order to carry out a temporal bone dissection that as far as possible imitates…
