Turkish Neurosurgery 2025 , Vol 35 , Num 1
Evaluation of the Sella Morphology in Chiari Malformation Type I
Hakan OZALP1,Onur OZGURAL2,Baran Can ALPERGIN2,Aysenur INCEOGLU3,Sibel OZALP4,Ercan ARMAGAN5,Hadice UCAR3,Orhan BEGER3
1Istanbul Medipol University Faculty of Medicine, Department of Neurosurgery, Istanbul, Türkiye
2Ankara University Faculty of Medicine, Department of Neurosurgery, Ankara, Türkiye
3Gaziantep University Faculty of Medicine, Department of Anatomy, Gaziantep, Türkiye
4Istanbul Medipol University Vocational School, Department of Medical Laboratory Techniques, Istanbul, Türkiye
5Silivri Anadolu Hospital, Department of Neurosurgery, Istanbul, Türkiye
DOI : 10.5137/1019-5149.JTN.45939-23.3 AIM: To investigate the morphology of sella turcica (ST) in Chiari malformation type I (CM-I) using computed tomography.

MATERIAL and METHODS: The size and shape of ST were examined using the radiological images of 32 CM-I patients (21 female/11 male, mean age: 26.09 ± 15.39 years), and 32 normal participants (19 female/13 male, mean age: 28.56 ± 19.37 years).

RESULTS: The height, diameter, width, and length of ST were similar in CM-I and control groups (p>0.05). According to the Axelsson classification, the ST shape in CM-I was identified as normal in 16 patients (50%), oblique anterior wall in 2 patients (6.25%), irregularity in 6 patients (18.75%), and pyramidal shape of the dorsum sellae in 8 patients (25%). In controls, the ST shape was identified as normal in 18 patients (56.25%), oblique anterior wall in 4 patients (12.50%), irregularity in 2 patients (6.25%), and pyramidal shape of the dorsum sellae in 8 patients (25%). According to the Camp classification, the ST shape in CM-I was identified as oval in 6 patients (18.80%), round in 21 patients (65.60%), and flattened in 5 patients (15.60%). In controls, the ST shape was identified as oval in 19 subjects (59.40%), round in 10 patients (31.30%), and flattened in 3 patients (9.40%).

CONCLUSION: The size of ST in patients with CM-I was similar to that in healthy partcipants. The only difference in ST morphology was that patients with CM-I had more round-shaped sella, whereas normal subjects had more oval-shaped sella. Keywords : Sella turcica, Sella morphology, Chiari Malformation Type I, Tuberculum Sellae, Dorsum Sellae

Corresponding author : Baran Can ALPERGIN, balpergin@gmail.com