Stereotactic laser ablation of the splenium for intractable epilepsy

Area of Science:

• Neurosurgery
• Epilepsy Treatment
• Minimally Invasive Procedures

Background:

• Corpus callosotomy is used for refractory epilepsy with multifocal seizures.
• Traditional methods include open surgery and radiosurgery.
• Minimally invasive MRI-guided laser interstitial thermal ablation (MTLA) offers reduced morbidity.

Purpose of the Study:

• To report the use of laser ablation of the splenium to achieve full corpus callosotomy.
• To evaluate the effectiveness in a patient with medically refractory epilepsy and prior partial callosotomy.

Main Methods:

• Utilized MRI-guided laser interstitial thermal ablation (MTLA) for splenial ablation.
• Performed on a patient with a history of partial corpus callosotomy and persistent seizures.
• Confirmed ablation adequacy with postoperative MRI.

Main Results:

• Achieved full corpus callosotomy via laser ablation of the splenial remnant.
• Patient experienced a >50% reduction in seizure frequency at four-month follow-up.
• This is the first report of laser ablation of the splenium for full corpus callosotomy post-anterior callosotomy.

Conclusions:

• Laser ablation of the splenium is a viable option for completing corpus callosotomy.
• This minimally invasive technique can be effective in patients with intractable generalized epilepsy.
• Offers a potentially less morbid alternative to repeat open surgery.