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Related Experiment Video

Updated: Sep 2, 2025

Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection
02:22

Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection

Published on: April 12, 2024

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[Hypothalamic hamartoma microsurgical resection using transcallosal transforaminal approach].

A G Melikyan1, P A Vlasov1, Yu Yu Trunin1

  • 1Burdenko Neurosurgical Center, Moscow, Russia.

Zhurnal Voprosy Neirokhirurgii Imeni N. N. Burdenko
|August 9, 2022
PubMed
Summary

For sessile hypothalamic hamartomas with an obliterated cavum septi pellucidi, the transcallosal transforaminal approach offers a safe alternative to the standard transseptal interforniceal route, achieving similar outcomes with acceptable morbidity.

Keywords:
approachcomplicationshypothalamic hamartomamicrosurgeryoutcome

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Area of Science:

  • Neurosurgery
  • Neurology
  • Pediatric Neurosurgery

Background:

  • Sessile hypothalamic hamartomas (SHH) are rare developmental tumors.
  • The transcallosal transseptal interforniceal approach is the standard surgical route for SHH resection.
  • Obliterated cavum septi pellucidi can complicate surgical access to SHH.

Purpose of the Study:

  • To evaluate the efficacy and safety of the transcallosal transforaminal approach for SHH resection in patients with obliterated cavum septi pellucidi.
  • To compare outcomes with the conventional transseptal interforniceal route.

Main Methods:

  • Six patients (aged 8-34 years) with SHH and intractable epilepsy underwent surgery via a transcallosal transforaminal route.
  • Lesions were removed using CUSA and dynamic retraction; the anterior septal vein was divided in 4 cases to improve access.
  • Preoperative MRI could not distinguish the cavum septi pellucidi in any case.

Main Results:

  • Total or near-total resection was achieved in Type II hamartomas.
  • No venous infarcts were observed in patients with divided septal veins.
  • 50% of patients became seizure-free, and others reported improved quality of life with simplified medication regimens.

Conclusions:

  • The transcallosal transforaminal approach is a viable alternative for carefully selected patients with small Delalande-Type II SHH and obliterated cavum septi pellucidi.
  • This approach offers comparable outcomes and acceptable morbidity to the conventional route.