Microscopic anatomy of cavernous segment of internal carotid artery via extended transnasal approach
AIM: To explore microanatomical features of the cavernous segment of the internal carotid artery ( CSICA) for extended transnasal approach and to provide morphological bases for related operations. METHODS: Extended transnasal approach was performed on 10 fixed adult cadaver heads. The microscopic anatomical features of the branches of CSICA and its relationship with pituitary gland and the lateral wall of sphenoid sinus were observed under microscope. The distances from various segments of CSICA to median line were measured. RESULTS: The distance from the nostril to the nearest point on CSICA was (74. 5 ±3.1) mm. The CSICA was divided into parasellar ICA and paraclival ICA and had 2 main branches. The distance from the medial wall of the anterior vertical segment of ICA, the anterior bend, the horizontal segment, and the posterior bend to midline was respec-tively(7.4±1.0),(9.0 ±1.3),(8.3 ±2.5), (7.6 ±1.4), and (8. 9 ±1.5) mm. CONCLUSION: The extended transnasal approach is a feasible surgical approach for the lesions that invade the internal wall of cavernous sinus from sella. Knowledge of the most important anatomic structures of CSICA and branch vessels of CSICA is essential for extended transnasal approach.
NETL
NSTL
万方数据
维普
