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 ORIGINAL ARTICLE
Year : 2020  |  Volume : 68  |  Issue : 2  |  Page : 403--406

Efficacy of Endoscopic Transsphenoidal Surgery for Cushing's Disease: Case Series and Review of the Literature


1 Department of Neurosurgery, Nara Prefecture General Medical Center, Nara; Department of Neurosurgery, Nara Medical University, Kashihara, Japan
2 Department of Neurosurgery, Nara Medical University, Kashihara, Japan
3 Department of Neurosurgery, Osaka Police Hospital, Osaka, Japan

Correspondence Address:
Daisuke Wajima
Shijo-cho 840, Kashihara, Nara 634-8522
Japan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0028-3886.284363

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Background: This study was performed to examine the efficacy of endoscopic transsphenoidal surgery (ETS) for Cushing's disease at a single institute and to review past reports. Material and Methods: We studied eight consecutive patients who underwent ETS for Cushing's disease. The radiological evaluation comprised a detailed examination of preoperative magnetic resonance images (MRIs), including inferior petrosal sinus sampling, for cases with normal renal function. Remission was evaluated at least three months after surgery and was defined by the presence of hypocortisolemia that required steroid replacement therapy or eucortisolemia with suppression to <1.8 μg/dL after 1mg of dexamethasone. Results: In all cases preoperative MRI was abnormal and included two macroadenomas (25 %). Pathological confirmation of an adenoma was possible in all patients. The mean follow-up period was 5.6 (2–7) years. Remission was confirmed in 75.0% of the cases and was higher in rate for microadenoma (100%) than for macroadenoma (50%). Postoperatively , no cerebrospinal fluid rhinorrhea occurred, but new endocrine deficits were noted in 25% of patients. Conclusion: Based on this study, ETS enhanced the intrasellar identification of adenomatous tissue, which led to low remission and complication rates that were comparable with those of traditional microsurgery for Cushing's disease.






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