SURGICAL ANATOMY OF THE CRANIO-ORBITAL REGION. Surgical anatomy of the orbit -- Optic strut, optic canal and nerve -- Microsurgical anatomy of the superior and inferior orbital fissures -- CLINICAL AND IMAGING DIAGNOSIS. Clinical examination -- Neuroradiological imaging of cranio-orbital mass lesions -- SURGICAL APPROACHES TO THE CRANIO-ORBITAL REGION. The supraorbital-pterional approach -- The midline transfrontal approach -- The medial transorbital approach -- The frontotemporal-orbitozygomatic approach -- The lateral orbito-cranial approach -- The trans-sphenoidal trans-ethmoidal endoscopic approach to the orbit -- The transorbital endoscopic approaches -- SPECIFIC PATHOLOGICAL ENTITIES. Optic nerve gliomas -- Spheno-orbital meningiomas -- Intraorbital, intracanalar and optic sheath meningiomas -- Schwannomas of the oculomotor nerves -- Primary and metastatic bone tumors ofthe sphenoid wing and orbit -- Soft tissues orbital tumors -- Cranio-orbital fibrous dysplasia -- Orbital arteriovenous malformations -- Mucoceles of the ethmoid sinus and orbit.