Li 1999.

Methods	Case series; not clear whether retrospective or prospective
Participants	38 teenagers and adults from Canadian, UK, American, and Australian centres with medically intractable epilepsy associated with hippocampal sclerosis and an additional lesion, which could have been temporal or extratemporal
Interventions	Lesionectomy (removal of the extrahippocampal lesion); mesial temporal resection (removal of the atrophic hippocampus); and lesionectomy plus mesial temporal resection (removal of both the lesion and the atrophic hippocampus)
Outcomes	Seizure outcome assessed by modified Engel class at least 12 months post surgery
Notes	—