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Related Experiment Videos

Radiosurgery for pituitary adenoma.

Jalali1, Brada

  • 1Neuro-oncology Unit, The Institute of Cancer Research and The Royal Marsden NHS Trust, Downs Road, Sutton, Surrey SM2 5PT, UK

Critical Reviews in Neurosurgery : CR
|November 30, 1999
PubMed
Summary

Single-fraction stereotactic radiosurgery (SRS) for pituitary adenomas may have higher toxicity and lacks evidence for superior tumor control compared to conventional radiotherapy. Further research into fractionated techniques is warranted.

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Area of Science:

  • Neurosurgery
  • Radiation Oncology
  • Endocrinology

Background:

  • The role of irradiation in managing pituitary adenomas remains unclear.
  • Patients with residual or recurrent tumors are treated with conventional radiotherapy, stereotactic radiosurgery (SRS), and stereotactic radiotherapy (SRT).

Purpose of the Study:

  • To review and compare the efficacy and toxicity of SRS versus conventional radiotherapy for pituitary adenomas.
  • To evaluate the evidence for SRS in hormone-secreting tumors.

Main Methods:

  • Literature review of published articles on SRS efficacy and toxicity.
  • Comparison with existing data on conventional fractionated radiotherapy.

Main Results:

  • Single-fraction SRS may not be more effective or less toxic than fractionated radiotherapy.
  • Evidence for faster hormone level reduction with SRS is not convincing.
  • SRS may exhibit higher toxicity without guaranteed long-term tumor control.

Conclusions:

  • Limited evidence supports the routine use of single-fraction SRS for most benign pituitary adenomas.
  • Fractionated conformal stereotactic radiotherapy (SCRT) may be a safer alternative for larger, non-spherical tumors.

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