Vural Hamzaoğlu1, Orhan Beger2, Osman Erdoğan3, Engin Kara4, Yusuf Vayisoğlu5, Pourya Taghipour6, Hakan Özalp1, Derya Karataş1, Emel Avcı1, Ahmet Dağtekin1, Celal Bağdatoğlu1, Ahmet Hakan Öztürk7, Derya Ümit Talas5. 1. Mersin University Faculty of Medicine, Department of Neurosurgery, Mersin, Turkey. 2. Mersin University Faculty of Medicine, Department of Anatomy, Mersin, Turkey. Electronic address: obeger@gmail.com. 3. Şanlıurfa Training and Research Hospital, Department of Otorhinolaryngology, Şanlıurfa, Turkey. 4. Mersin University Faculty of Medicine, Department of Radiology, Mersin, Turkey. 5. Mersin University Faculty of Medicine, Department of Otorhinolaryngology, Mersin, Turkey. 6. Mersin University Faculty of Medicine, Mersin, Turkey. 7. Mersin University Faculty of Medicine, Department of Anatomy, Mersin, Turkey.
Abstract
OBJECTIVE: The main aim of this study placed on cadavers was to compare the data related to geniculate ganglion (GG) dehiscence and dimension obtained from computed tomography (CT) with dissection values. METHODS: This study was conducted on 20 temporal bones obtained from 10 cadavers (4 female, 6 male) aged between 45 and 92 (71.50 ± 15.98) years. All the measurements related to GG dimension were performed with a CT scanner and microdissection. RESULTS: The size of GG including its area, length, and width did not show statistically significant differences in terms of sex, side, and assessment method (CT and cadaveric dissections). The dehiscent GG was observed in 6 (30%) and 5 (25%) out of 20 temporal bones in CT and cadaveric dissections, respectively. The presence and absence of GG dehiscence in CT and dissection were similar in 75%. CONCLUSIONS: Our findings based on dissection data suggest that radiologic evaluation of dehiscent GG detection might be erroneous by 25%, which highlights that surgeons should be careful when lifting the dura to prevent GG injury during middle cranial fossa surgical approaches. On the other hand, there was no statistical difference between CT and dissection measurements related to GG dimension.
OBJECTIVE: The main aim of this study placed on cadavers was to compare the data related to geniculate ganglion (GG) dehiscence and dimension obtained from computed tomography (CT) with dissection values. METHODS: This study was conducted on 20 temporal bones obtained from 10 cadavers (4 female, 6 male) aged between 45 and 92 (71.50 ± 15.98) years. All the measurements related to GG dimension were performed with a CT scanner and microdissection. RESULTS: The size of GG including its area, length, and width did not show statistically significant differences in terms of sex, side, and assessment method (CT and cadaveric dissections). The dehiscent GG was observed in 6 (30%) and 5 (25%) out of 20 temporal bones in CT and cadaveric dissections, respectively. The presence and absence of GG dehiscence in CT and dissection were similar in 75%. CONCLUSIONS: Our findings based on dissection data suggest that radiologic evaluation of dehiscent GG detection might be erroneous by 25%, which highlights that surgeons should be careful when lifting the dura to prevent GG injury during middle cranial fossa surgical approaches. On the other hand, there was no statistical difference between CT and dissection measurements related to GG dimension.