Cavernous sinus lesions biopsy with neuronavigation and tip-cut needle

Area of Science:

• Neurosurgery
• Interventional Neuroradiology

Background:

• Cavernous sinus (CS) lesions often require biopsy when diagnosis remains elusive after extensive non-invasive evaluations.
• Currently, no established guidelines exist for indications or optimal techniques for transoval CS biopsy.

Observation:

• A novel X-ray and neuronavigation-assisted transoval CS biopsy technique was employed in four patients.
• Tip-cut needles were utilized for the biopsy procedures.

Findings:

• The described technique enables precise determination of the optimal angle for CS entry, mitigating risks associated with distorted anatomy.
• Improved intra-CS orientation and reduced radiation exposure and anesthesia duration were observed.

Implications:

• This method offers a safer and more efficient approach to transoval CS biopsy.
• It provides a standardized technique for a challenging diagnostic procedure in neurovascular cases.