Oblique transsphenoethmoidal approach to the cavernous sinus.

Area of Science:

• Neurosurgery
• Endocrinology
• Otolaryngology

Background:

• Pituitary adenomas often extend into the cavernous sinus, posing surgical challenges.
• Standard surgical approaches like transsphenoidal and transcranial have limitations in visualizing and accessing these tumors.
• Cavernous sinus invasion complicates pituitary adenoma treatment, risking neurological deficits and incomplete resection.

Purpose of the Study:

• To evaluate the efficacy and safety of an oblique transsphenoethmoidal approach for pituitary adenomas with cavernous sinus invasion.
• To assess the feasibility of achieving complete or subtotal tumor removal using this modified technique.

Main Methods:

• The oblique transsphenoethmoidal approach, a modification of the standard transsphenoidal technique, was employed.
• Nineteen patients diagnosed with pituitary adenomas invading the cavernous sinus underwent surgical treatment.
• Surgical outcomes, including extent of tumor removal and patient tolerance, were documented.

Main Results:

• Complete tumor removal was achieved in 15 out of 19 patients (79%).
• Subtotal tumor removal was accomplished in 4 patients (21%).
• The modified approach was well-tolerated by patients, with satisfactory postoperative results.

Conclusions:

• The oblique transsphenoethmoidal approach provides a viable and effective surgical option for pituitary adenomas invading the cavernous sinus.
• This technique offers improved visualization and access compared to standard methods, leading to encouraging resection rates.
• Further studies with larger patient cohorts are warranted to statistically validate these findings.