Related Experiment Video
Updated: Aug 6, 2026

Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study
Published on: August 15, 2025
Leukoencephalopathy with bilateral anterior temporal lobe cysts
John B Bodensteiner1, John F Kerrigan, Stanley D Johnsen
1Children's Health Center of St. Joseph's Hospital and The Barrow Neurological Institute, Phoenix, AZ, USA. jbodens@chw.edu
Abstract:
Recently, several reports describing patients with a nonprogressive clinical course, increased signal in the cerebral white matter, and cystic changes in the anterior temporal lobes on magnetic resonance imaging (MRI) have appeared. To date, 25 patients with this very distinctive condition have been described. We report four new cases of this newly recognized entity. All have been identified primarily because of the distinctive MRI features consisting of the very unusual anterior temporal lobe cystic changes. The clinical features are characterized by severe, disabling, but nonprogressive mental and motor retardation. Magnetic resonance spectroscopy has shown increased myo-inositol and decreased N-acetylaspartate in the cerebral white matter. This is a distinctive, probably genetic, condition with characteristic neuroimaging and clinical features. In the appropriate clinical situation, the neuroimaging features are diagnostic.
Insights
This study describes a rare genetic neurological disorder characterized by severe intellectual disability and distinct brain MRI findings, including anterior temporal lobe cysts. The condition presents with nonprogressive motor and mental deficits, aiding diagnosis through neuroimaging.
Area of Science:
- Neurology
- Neuroimaging
- Genetics
Background:
- A distinctive neurological condition has been increasingly reported.
- Characterized by specific magnetic resonance imaging (MRI) findings and nonprogressive clinical course.
- 25 cases previously described, highlighting its rarity and distinctiveness.
Purpose of the Study:
- To report four new cases of this newly recognized neurological entity.
- To further characterize the clinical and neuroimaging features.
- To emphasize the diagnostic utility of MRI in this condition.
Main Methods:
- Case reporting of four new patients.
- Detailed clinical assessment including motor and mental retardation.
- Neuroimaging analysis, specifically magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS).
Main Results:
- Four new patients identified with characteristic anterior temporal lobe cystic changes on MRI.
- Clinical presentation includes severe, disabling, nonprogressive mental and motor retardation.
- Magnetic resonance spectroscopy revealed increased myo-inositol and decreased N-acetylaspartate in cerebral white matter.
Conclusions:
- This is a distinctive, likely genetic, neurological condition.
- Characteristic neuroimaging and clinical features aid in diagnosis.
- Anterior temporal lobe cystic changes on MRI are highly suggestive in the appropriate clinical context.
Related Concept Videos
Encephalitis ll: Pathophysiology
Brain Abscess l: Introduction
Encephalitis l: Introduction
Cryptococcal Meningitis
Hepatic Encephalopathy
Cerebral Edema ll: Pathophysiology
