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Journal of Korean Neurosurgical Society 2001;30(5): 586-591.
Endoscopy Assisted Transsphenoidal Surgery for Pituitary Tumors.
Young Sang Ahn, Young Il Chun, Jae Sung Ahn, Sang Ryong Jeon, Jeong Hoon Kim, Young Shin Ra, Sung Woo Roh, Chang Jin Kim, Yang Kwon, Seung Chul Rhim, Jung Kyo Lee, Byung Duk Kwun
Department of Neurological surgery Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea.
ABSTRACT
OBJECTIVE
Transseptal or sublabial transsphenoidal surgery has been standard teatment for pituitary tumors for decades. However, as an alternative to this surgery endonasal endoscopic technique has been reported with encouraging results. We have started endoscopy-assisted transsphednoidal surgery from May 1998. In this paper we analyzed the methods, outcome, advantage and disadvantage of this surgical approach for the purpose of planning optimal treatment of pituitary tumors.
METHODS
This study consisits of 13 cases of pituitary tumors who were treated by endoscopy-assisted transsphenoidal surgery using one nostril from May 1998 to July 1999. Mean follow up period was 12.9 months.
RESULTS
There was no septal or sublabial incision and little surgical damage to nasal structure. With this technique, rapid surgical approach and short hospital day were possible, being 3-6 days in patients without CSF leakage. Using various angled endoscope, good surgical view was obtained. Initially it was difficult to use various instruments in narrow nasal cavity, but became feasible after several procedures. Among 13 cases, total removal was possible in 11 cases. One of two cases in whom tumor was incompletely removed underwent gamma-knife radiosurgery and second underwent reoperation through subfrontal approach. There were 6 cases of hormone secreting tumors and hormonal remission was achived in all of these cases. Postoperative complications were CSF leakage(6 cases), diabetes insipidus(2 cases) and panhypopituitarysm(1 case). Lumbar drainage was done in all cases of CSF leakage.
CONCLUSION
The advantage of endoscopy-assisted transsphenoidal surgery are rapid surgical approach, low postoperative morbidity, short hospital day and good surgical view. The disadvantage of this appoach are difficulty in manupulating various instruments in narrow nostril and difficulty in distance perception but these problems can be overcome by practice and using stereoscopic endoscope.
Key Words: Endoscopy-assisted transsphenoidal surgery; Advantage; Disadvantage
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