Radiosurgery of the Skull Base: A Case-Based Approach

Section I

Section II

Section III

Section IV

Section V

Section VI

Section VII

1. Olfactory groove:
   1. Meningioma [Anterior fossa floor/Olfactory groove]
   2. Esthesioneuroblastoma
2. Planum sphenoidale/Tuberculum sellae:
   1. Meningioma [Tuberculum/Perioptic]
3. Sellar/Suprasellar:
   1. Pituitary tumor [Nonfunctional, Cavernous sinus]
   2. Pituitary tumor [Prolactinoma, Cavernous sinus]
   3. Pituitary tumor [Acromegaly, Cavernous sinus]
   4. Pituitary tumor [Cushing]
   5. Pituitary tumor with chiasmal compression [Reduced dose SRS or hypofractionated]
   6. Craniopharyngioma [Adult]
   7. Craniopharyngioma [Child]
   8. Metastasis to the Sella
   9. Rathkes Cleft cyst [Recurrent]
4. Parasellar space/Cavernous sinus:
   1. Oculomotor schwannoma
   2. Trochlear schwannoma
   3. Abducens schwannoma
   4. Trigeminal schwannoma
   5. Meningioma [Cavernous sinus, Small/Medium]
   6. Meningioma [Cavernous sinus, Large, 5-session hypofractionated]
5. Clivus:
   1. Chordoma [Clivus/Cavernous sinus]
   2. Metastasis to Meckels cave/Clivus bone
   3. Solitary Fibrous Tumor [Clivus]
6. Cerebellopontine Angle
   1. Meningioma [Petroclival with diplopia]
   2. Meningioma [Petroclival with TGN, Tumor + Nerve dose plan]
   3. Meningioma [Inferior petrous ridge]
   4. Meningioma [Petrous ridge posterior to IAC]
   5. Meningioma [Cerebellopontine angle]
   6. Chondrosarcoma [Petrous ridge]
   7. Endolymphatic sac tumor
7. Internal auditory canal:
   1. Vestibular schwannoma [4mm, Intracanalicular]
   2. Vestibular schwannoma [10mm, Lateral fundus]
   3. Vestibular schwannoma [10mm, Medial canal]
   4. Vestibular schwannoma [18mm]
   5. Vestibular schwannoma [23mm]
   6. Vestibular schwannoma [30mm]
   7. Vestibular schwannoma [After prior resection]
   8. Vestibular schwannoma [Poor hearing in the contralateral non-tumor ear]
   9. Vestibular schwannoma [Neurofibromatosis type 2]
   10. Facial schwannoma [Auditory canal]
   11. Facial schwannoma [Geniculate]
   12. Facial nerve hemangioma
8. Jugular foramen:
   1. Jugular foramen schwannoma
   2. Glomus tumor
   3. Meningioma [Jugular foramen]
9. Foramen magnum:
   1. Hypoglossal schwannoma
   2. Meningioma [Foramen magnum]
10. Miscellaneous
    1. Meningioma [Torcular]
    2. Meningioma [Transverse sinus]
    3. Meningioma [Grade 2 histology, Multiple sites]
    4. Meningioma [Neurofibromatosis type 2, Skull base]
    5. Hemangiopericytoma
    6. Adenoid cystic carcinoma
    7. Squamous Cell carcinoma [Head and neck with perineural spread]
    8. Epidermoid cyst
    9. Dural arteriovenous fistula [Transverse sinus]
    10. Dural arteriovenous fistula [Cavernous sinus, Carotid-Cavernous fistula]