Corpus Callosotomy for Controlling Epileptic Spasms: A Proposal for Surgical Selection

Area of Science:

• Neurology
• Neurosurgery
• Epileptology

Background:

• Corpus callosotomy (CC) was first proposed in 1940 for epilepsy treatment.
• CC is primarily used for drop attacks (generalized tonic or atonic seizures).
• Epileptic spasms (ESs), a feature of West syndrome, are characterized by brief muscle contractions and specific EEG patterns.

Purpose of the Study:

• To review the literature on corpus callosotomy (CC) for treating medically intractable epileptic spasms (ESs).
• To discuss the history, adaptations, and patient selection for CC in ES treatment.
• To compare CC with established resection surgeries for ES and propose a surgical selection flow.

Main Methods:

• Literature review of studies on corpus callosotomy (CC) for epileptic spasms (ESs).
• Analysis of patient characteristics in CC studies for ES, particularly lesion status (MRI).
• Comparison of CC with resection surgeries (disconnections, hemispherotomy) for medically intractable ES.

Main Results:

• Studies on CC for ES have increased since 2010.
• Patients undergoing CC for ES often lack MRI lesions or have bilateral lesions.
• Resection surgeries are established for ES with unilateral epileptogenic regions.

Conclusions:

• Corpus callosotomy (CC) is an adopted treatment for medically intractable epileptic spasms (ESs).
• Patient selection for CC differs from resection surgery, often involving bilateral or non-lesional epilepsy.
• A proposed surgical selection flow integrates CC and resection surgery as first-line options for eligible ES patients.