Compressive Optic Nerve Lesions at the Optic Canal: - download pdf or read online

Diagnosis

By Renate Unsöld, Wolfgang Seeger (auth.)

This entire monograph opens up sensational new diagnostic and healing views. The topographic details is gifted with first-class anatomic arrangements. The huge spectrum of signs is taken from vast medical event; they're severely analysed and in comparison to the ophthalmological, neurosurgical, and neuroradiological literature. The monograph is a wonderful resource for the ophthalmologic and neurologic clinician who's the 1st to be faced with signs of optic nerve lesions. For the radiologist, it bargains a transparent, didactic assessment of standard pathological adjustments of an important lesions. For the neurosurgeon, the dialogue of optimum method and intraoperative findings issues to the potential of early microsurgical intervention that keeps as a lot functionality as attainable.

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Additional resources for Compressive Optic Nerve Lesions at the Optic Canal: Pathogenesis — Diagnosis — Treatment

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Intracavernous ectasia of the carotid artery causing a sudden onset of partial third nerve palsy with pupillary involvement. Sequential axial CT sections before and after bolus injection of contrast medium (upper left earliest scan, lower right latest). (a) Before contrast: there is only moderate enlargement of the left cavernous sinus, which does not allow differentiation between a possible soft tissue mass or an enlarged internal carotid artery (b-d). After bolus injection of contrast medium ; the enhanced left internal carotid artery appears tortuous and markedly ectatic, causing distention of the left cavernous sinus, probably compressing the third cranial nerve within the cavernous sinus.

After surgery (b) the visual field has recovered and there is only a paracentral scotoma probably due to occlusion of a retinal vessel. (For details see p. 117) visual field of a 45-year-old male with focal pneumosinus dilatans causing bone erosion of the medial and lower portions of the left optic canal. During surgery the optic nerve was observed to be pressed against the rigid dural fold crossing over the intracranial optic canal. Besides 24 "m" " ... RW 3. 84 R W 17. 16 7. 2. oph:::

1968; Makialowitz 1969 ; Unsold 1983; Reicher et al. 1986), papilledema and optic atrophy and cannot be differentiated by clinical means from other compressive lesions in this area such as aneurysms, 41 ectatic vessels, and small meningiomas. Rarely, there is associated paresis of an oculomotor, abducent, trigeminal or vestibulocochlear nerve (Selz 1970). Pneumosinus dilatans of the ethmoid air cells or sphenoid bone has been described, for instance, by Agati and Bertolotti (1946), Agati (1946), Montresor (1954), Petereit (1975), Morton (1983), and others, but is less frequent than hyperpneumatizations of the frontal and maxillary sinus (Morrison et al.

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