İnfrakiazmatik koridorun endoskopik transsfenoidal görüntülenmesi (Kadavra anatomik çalışması)

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Thesis Type: Expertise In Medicine

Institution Of The Thesis: Kocaeli University, Tıp Fakültesi, Cerrahi Tıp Bilimleri, Turkey

Approval Date: 2016

Thesis Language: Turkish

Student: ÜMİT ÇELAKIL

Principal Supervisor (For Co-Supervisor Theses): İHSAN ANIK

Open Archive Collection: AVESIS Open Access Collection

Abstract:

Aim and Introduction: Neurovascular structures and variations which are forming infrachiasmatic corridor were displayed and documented on 11 cadavers. We discussed advantages and disadvantages of extended endoscopic transsphenoidal approach and compared with conventional methods. Material and Method: 11 cadavers were used in advanced Endoscopic Anterior Skull Base Course in 2014 at Kocaeli University Neurosurgery and Pituitary Research Center. In this course we were viewed anatomical structures. Results: 4 (36,3%) of 11 cadavers were female and 7 (63,7%) were male. Cadavers age range were 55-89. In 4 (36,3%) cadavers deviated nasal septum viewed. Significantly sphenoid ostium was not seen in 2 (18,1%) cadavers. From the sphenoid ostium with choana was measured average 15 mm. In 5 (45,4%) cadavers were viewed multipl irregular septae. When the sphenoid sinus pneumatization in 8 (72,8%) cadavers sellar type and in 3 (27,2%) cadavers presellar type were viewed. Chonchal type was not seen. In 8 (72,8%) cadavers sellar base, optical and carotid tuberen are markedly bulging were observed and in 3 (27,2%) cadavers significantly bulging were not observed. In 1 (9%) cadaver was seen carotid tuberen course horizontal through the midline. Superior hypophyseal artery was viewed in 9 (81,8%) cadavers course rising superiomedial througout infundibulum and in 2 (18,2%) cadavers course steeper angle through the optic chiasm. In 8 (72,7%) cadavers basilary artery looking tortuous, in 3 (27,3%) cadavers looking straight. All of the cadaver was seen without a seperate division BAM continues Lilliequist membrane. Infrachiasmatic corridor until mamillary body was seen a safety way for neurovascular structures. Conclusion: Small and located midline suprasellar lesions remove easily with extended endoscopic transsphenoidal approach. Infrachiasmatic corridor is a safe way. Complication rates are less according to conventional methods in selected lesions. Key Words: Endoscopy, infrachiasmatic corridor