Oblique transsphenoethmoidal approach to the cavernous sinus.

Pituitary adenomas frequently invade the cavernous sinus. The standard transsphenoidal approach does not provide satisfactory visualization of the cavernous sinus structures. The transcranial approach has no advantages, and increases the operative trauma and complications. The oblique transsphenoethmoidal approach, a modified standard transsphenoidal approach, was used to treat 19 patients with pituitary adenomas invading the cavernous sinus. Complete tumor removal was achieved in 15 patients and subtotal removal in 4 patients. The patients tolerated this modified transsphenoethmoidal approach well and the postoperative results were satisfactory. Although the number of patients was too small to allow any statistical analysis, the results, compared with other series, are encouraging.

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