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Updated: Jun 23, 2026

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Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
Long-term mortality after transsphenoidal surgery for Cushing disease.
B Swearingen1, B M Biller, F G Barker
1Neurosurgical Service, Massachusetts General Hospital and Harvard Medical School, Boston 02114, USA.
Annals of Internal Medicine
|June 12, 1999
Summary
Long-term survival for Cushing disease patients treated with transsphenoidal surgery is significantly improved. Modern management techniques offer better outcomes than historically poor survival rates associated with this condition.
Area of Science:
- Endocrinology
- Neurosurgery
- Oncology
Background:
- Cushing disease historically has a high mortality rate when untreated.
- Long-term survival data post-transsphenoidal surgery for Cushing disease is limited.
Purpose of the Study:
- To determine the long-term mortality rate in patients treated for Cushing disease using current management techniques.
- Evaluate survival outcomes following transsphenoidal adenomectomy.
Main Methods:
- Retrospective case series of 161 patients (1978-1996) treated at a tertiary care center.
- Transsphenoidal adenomectomy with as-needed adjunctive therapy.
- Data collected via record review and follow-up interviews.
Main Results:
- 90% cure rate for previously untreated microadenomas.
- No perioperative deaths occurred in 193 procedures.
- 5- and 10-year survival rates were 99% and 93%, respectively, comparable to the general population.
Conclusions:
- Current management techniques for Cushing disease significantly improve patient survival.
- Transsphenoidal surgery offers better long-term outcomes compared to historical data.
- Improved survival rates demonstrate the efficacy of modern treatment approaches.
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