© 2018 Elsevier Inc. All rights reserved. Please note that the copyright for the original figures submitted by the contributors is owned by Contributors. Introduction The retrosigmoid approach (RSA) provides a wide exposure of the cerebellopontine angle (CPA) cistern. Meckel’s…
© 2018 Elsevier Inc. All rights reserved. Please note that the copyright for the original figures submitted by the contributors is owned by Contributors. Indications and Preoperative Planning Chordomas and chondrosarcomas, while distinct entities, are both slowly growing and locally…
Please access Videos to view the corresponding videos for this chapter. The retrosigmoid approach is a versatile type of craniotomy that creates a panoramic view of the posterior fossa from the tentorium cerebelli to the foramen magnum. The indications for…
Key Points In congenital sensorineural hearing loss, approximately 20% of inner ears demonstrate a radiographically detectable abnormality. Many patterns of deformity appear to result from disturbances in the embryogenesis of the inner ear during the first trimester. Enlargement of the…