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Radiosurgery for venous angiomas

C Lindquist1, W Y Guo, B Karlsson

  • 1Department of Neurosurgery, Karolinska Institute, Stockholm, Sweden.

Journal of Neurosurgery
|April 1, 1993
PubMed
Summary
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Gamma knife radiosurgery for venous angiomas offers an alternative to surgery, but results show limited efficacy and significant risks, including radiation necrosis. Further research is needed to establish its safety and effectiveness for these benign vascular malformations.

Area of Science:

  • Neurosurgery
  • Radiation Oncology
  • Vascular Neurology

Background:

  • Venous angiomas are benign vascular malformations often treated with microsurgery.
  • Microsurgery carries risks of abrupt cessation of venous drainage, potentially harming adjacent brain tissue.
  • Radiosurgery presents a conceptually attractive alternative to minimize surgical risks.

Purpose of the Study:

  • To evaluate the efficacy and safety of gamma knife radiosurgery for treating venous angiomas.
  • To assess radiosurgery's impact on venous angiomas, especially those sharing drainage with arteriovenous malformations (AVMs).

Main Methods:

  • Gamma knife radiosurgery was administered to 13 cases of venous angioma between 1977 and 1991.
  • Treatment targeted the convergence of medullary veins for venous angiomas.

Related Experiment Videos

  • For combined venous angioma and AVM cases, treatment focused exclusively on the AVM nidus.

    • Main Results:

    • Complete obliteration of venous angioma occurred in 1 case, partial in 3, and 5 were unaffected.
    • Four cases experienced adverse radiation effects, including one focal edema and three radionecroses.
    • In two combined AVM and venous angioma cases, complete AVM nidus obliteration was achieved.

    Conclusions:

    • Gamma knife radiosurgery for venous angiomas, while conceptually appealing, does not yet meet minimal risk criteria for treating lesions with a benign natural history.
    • The observed efficacy is limited, and significant risks such as radionecrosis necessitate caution.
    • Further investigation is required to determine the optimal role of radiosurgery in managing venous angiomas.