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Objectives: The relationship between the mastoid triangle and the localization of the Asterion can be used in craniotomy and posterolateral surgical approaches. Therefore, we aimed to identify the relationship between the localization of the Asterion and mastoid triangle in dry skulls and its effect on surgery. Methods: Our study was performed on 93 adult skulls obtained from bone collections of the Anatomy Departments of Necmettin Erbakan University and Akdeniz University. The mastoid triangle, Asterion and linear distances between them were measured for to determine the localization of the Asterion. Results: The Asterion was located just above the Frankfurt horizontal plane on the left sides of the skulls in 54 (58.1%) specimens and on the right sides of the skulls in 71 (76.3%). It was located below the Frankfurt horizontal plane on the left sides of the skulls in 39 (41.9%) specimens; and on the right sides of the skulls in 19 (20.4%). There was a positive correlation between the distance of Asterion to apex of the mastoid process (r=0.832). Conclusion: The relationship between the mastoid process and the Asterion can be used for determination of the dural venous sinuses and neighboring neurovascular structures, in retrosigmoid posterolateral surgical approaches.

Objectives: The use of plastination can minimize health risks and cost in anatomy laboratories. Plastinates are easy to handle and can facilitate the learning of complex anatomical structures. Therefore, we aimed to evaluate the contribution of plastinates to teaching complex anatomy of the heart. Methods: Standard S10 technique was used for heart plastination by fixation, dehydration, impregnation and curing stages. Ninety volunteer first-year medicine students at Akdeniz University, who did not take cardiovascular system anatomy lectures yet, were included. Formalin-fixed heart specimens were used in the lecture of group 1; both formalin-fixed heart specimens and heart plastinates were used in the lecture of group 2. After the lecture, a 10-question exam was administered. Statistical significance between the scores of the two groups was tested with one sample t-test, and post hoc Tukey test was used for multiple comparisons. Results: The pre-test scores of the groups were compared with the scores obtained after the 2 hours of lecture (p=0.002, p

Persistence of fetal communications between the carotid and vertebrobasilar systems is uncommon. Persistent proatlantal artery is an anastomosis between the carotid and vertebrobasilar systems, typically classified as Type I and II. In this case report, 600 angiographies are examined retrospectively and two persistent proatlantal arteries were observed - one with Type I (0.16%) and the other with Type II (0.16%) proatlantal artery. Existence of these arteries are associated with intracranial vascular anomalies, especially aneurysms. In both of our cases, an aneurysm was detected in the middle cerebral artery. Precise knowledge of these anastomoses is essential for intracranial operations and catheterizations performed in this region.