Clinical Imaging of the Cerebello-Pontine Angle

1. Front Matter

   Pages I-IX

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2. Historical Overview

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 1-3

3. CT Examination: Techniques for Evaluation of the Cerebello-Pontine Angle

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 4-9

4. CT Anatomy of the Cerebello-Pontine Angle

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 10-26

5. General Principles for the CT Diagnosis of Cerebello-Pontine Angle Lesions

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 27-29

6. Pathology of the Cerebello-Pontine Angle

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 30-31

7. Acoustic Neurinoma

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 32-59

8. Meningioma of the Posterior Surface of the Petrous Bone

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 60-76

9. Epidermoid Tumors

   • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

   Pages 77-88

10. Arachnoid Cysts of the Cerebello-Pontine Angle

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 89-94

11. Trigeminal Neurinoma

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 95-99

12. Chordoma of the Cerebello-Pontine Angle

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 100-106

13. Chemodectomas of the Petrous Bone

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 107-116

14. Neurinomas of the Caudal Cranial Nerves

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 117-125

15. Neurinomas of the Facial Nerve

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 126-130

16. Vascular Lesions of the Cerebello-Pontine Angle

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 131-146

17. Secondary Tumors of the Cerebello-Pontine Angle

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 147-151

18. Magnetic Resonance Imaging of the Cerebello-Pontine Angle

    • Anton Valavanis, Othmar Schubiger, Thomas P. Naidich

    Pages 152-172

19. Back Matter

    Pages 173-202

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The cerebello-pontine angle has always posed a challenge to the neurosurgeon, the otoneurosurgeon, and the neuroradiologist. Angle masses which are very small and difficult to detect frequently produce symptoms, but may remain silent while growing to exceptional size. The neuroradiologist must have firm knowl­ edge of the clinical manifestations of the diverse angle lesions in order to tailor his studies to the patients' needs. The majority of angle lesions are benign; thus successful surgery has the potential for complete cure. Angle lesions typically arise in conjunction with vital neurovascular structures, and often displace these away from their expected positions. Large lesions may attenuate the vestibulocochlear and facial nerves and thin them over their dome. Since the nerves often remain functional, the surgeon then faces the need to separate the tumor from the contiguous nerve, with preservation of neurological function. Depending on the exact location and extension of the lesion, resection may best be attempted via otologic or neurosurgical approaches. The neuroradiologist must determine - precisely -the presence, site, size, and extension( s) of the lesion and the displacement of vital neurovascular structures as a guide to selecting the line of surgical attack. Since the arteries, veins, and nerves that traverse the angle are fine structures, the neuroradiologist must perform studies of the highest quality to do his job effectively.

• Tumor
• anatomy
• aneurysm
• angiography
• arteries
• computed tomography (CT)
• contrast agent
• cranial nerves
• diagnosis
• magnetic resonance
• magnetic resonance imaging (MRI)
• pathology
• radiology
• surgery
• tomography

• Abteilung für Neuroradiologie, Universitätsspital Zürich, Zürich, Switzerland

  Anton Valavanis

• Privatdozent für Neuroradiologie, Zürich, Switzerland

  Othmar Schubiger

• Section of Neuroradiology, The Children’s Memorial Hospital, Chicago, USA

  Thomas P. Naidich

Policies and ethics