Journal Basic Info

  • Impact Factor: 1.995**
  • H-Index: 8
  • ISSN: 2474-1647
  • DOI: 10.25107/2474-1647
**Impact Factor calculated based on Google Scholar Citations. Please contact us for any more details.

Major Scope

  •  Surgical Oncology
  •  Obstetrics Surgery
  •  Bariatric Surgery
  •  Urology
  •  Emergency Surgery
  •  Pediatric Surgery
  •  Gynecological Surgery
  •  Vascular Surgery


Citation: Clin Surg. 2022;7(1):3454.Case Report | Open Access

High-Frequency Oscillations Led to the Diagnosis of Frontal Lobe Epilepsy in a Case of Large Corpus Callosum Lipoma: A Case Report

Kozo Tashima1*, Tatsuya Tanaka1,2, Takeshi Tonegawa1, Akihito Hashiguchi1, Koichi Moroki1 and Hajime Tokuda1

1Department of Neurosurgery, Tokuda Neurosurgery Hospital, Japan
2Department of Neurosurgery, Asahikawa Medical College, Japan

*Correspondance to: Kozo Tashima 

 PDF  Full Text DOI: 10.25107/2474-1647.3454


This case involves a 15-year-old girl who had first experienced brief attacks of impaired consciousness when she was 14 years old. Subsequently, frequent occurrence of similar seizures accompanied with occasional foot stomping caused her to visit our hospital. Although there were no abnormal neurological findings, head computed tomography and magnetic resonance imaging revealed a 50 mm × 35 mm × 35 mm intracranial tumor deep in the interhemispheric fissures of the bilateral frontal lobe. The initial Electroencephalogram (EEG) did not show any apparent epileptic spikes, but High-Frequency Oscillation (HFO, 80 Hz) was frequently observed, mainly in the bilateral fronto-parietal lobes. Frequent unconscious fits with occasional foot stomping were observed; therefore, we diagnosed her with frontal lobe epilepsy. She was started on levetiracetam 1000 mg/ day, and the clinical seizure was well controlled. Since surgical removal of the large tumor of our case may cause blood flow damage in the posterior half of the interhemispheric fissure, conservative treatment was indicated. Although there are previous reports of lipomas in the corpus callosum, there are no reports of epilepsy cases with HFO recordings until now. However, rich vascularization of the large corpus callosum lipoma cannot neglect the future risk of tumor enlargement, malignant transformation or seizure recurrence, periodic follow up is indicated for further work up including hospitalization for possible surgical indication. We report a case of large corpus callosum lipoma in which HFO was useful to diagnose frontal lobe epilepsy.


Cite the article

Tashima K, Tanaka T, Tonegawa T, Hashiguchi A, Moroki K, Tokuda H. High-Frequency Oscillations Led to the Diagnosis of Frontal Lobe Epilepsy in a Case of Large Corpus Callosum Lipoma: A Case Report. Clin Surg. 2022; 7: 3454..

Search Our Journal

Journal Indexed In

Articles in PubMed

Voice Outcomes in Laryngotracheal Stenosis: Impact of the Montgomery T-tube
 PubMed  PMC  PDF  Full Text
Risk Factors for Visual Impairment in an Uninsured Population and the Impact of the Affordable Care Act
 PubMed  PMC  PDF  Full Text
View More...

Articles with Grants

Pathologic Fracture of the Patella Secondary to a Gouty Tophus
 Abstract  PDF  Full Text
Healthy Years of Life Lost in Shaanxi Province, Western China: An Evidence from the 2018 National Health Service Survey
 Abstract  PDF  Full Text
View More...