Pavlović M N, Jovanović I D, Ugrenović S Z, Kostić A V, Kundalić B K, Stojanović V R, Vlajković S, Trandafilović M M, Čukuranović-Kokoris J R, Antić M M
Medical Faculty, University of Nis, Bul. Zorana Djindjica 81, 18000 Nis, Serbia and Montenegro.
Neurosurgery Clinic, Clinical Centre Nis, Bul. Zorana Djindjica 48, 18000 Nis, Serbia and Montenegro.
Folia Morphol (Warsz). 2020;79(1):21-27. doi: 10.5603/FM.a2019.0046. Epub 2019 Apr 17.
Massa intermedia, a midline bar-shaped structure, connects two thalami across the third ventricle in 70-80% of healthy humans. It has become clinically important since its absence was comprehended as a midline malformation of the brain and brought in connection with schizophrenia indicating that some symptoms could be a consequence of disturbed neuron chains underlying the mechanisms of attention and processing of information. The aim of the investigation was to find out the incidence, position, and size of massa intermedia in the brains of the Serbian population.
Our investigation was performed on 41 brains of adult Serbian cadavers using a macro dissection method.
Massa intermedia was present in 80.49% of cases, in 1 case it was double. In most of the cases it was located in the superior quadrants of the lateral wall of the third ventricle, the larger part being in the anterosuperior one. Some other combinations were also present. The horizontal diameter of the cross-section was larger than vertical and was not in correlation with the length of the third ventricle. The average cross-sectional area was 29.58 mm2, significantly larger in females.
Massa intermedia is present in most of the investigated brains, usually connecting the anterior-superior quadrants of the lateral walls of the third ventricle. Different in shape and size its cross-section is a horizontal ellipse, significantly larger in females. The cross-sectional area and the size of the third ventricle are not in correlation.
中间块是一种位于中线的棒状结构，在70% - 80%的健康人群中，它横跨第三脑室连接两侧丘脑。自从其缺如被认为是一种脑中线畸形，并与精神分裂症相关联以来，它在临床上变得重要起来，这表明一些症状可能是注意力和信息处理机制背后神经元链紊乱的结果。本研究的目的是查明塞尔维亚人群大脑中中间块的发生率、位置和大小。
我们采用大体解剖方法对41例成年塞尔维亚尸体的大脑进行了研究。
80.49%的病例存在中间块，1例为双侧中间块。在大多数病例中，它位于第三脑室侧壁的上象限，大部分位于前上象限。也存在一些其他组合情况。横截面的水平直径大于垂直直径，且与第三脑室的长度无关。平均横截面积为29.58平方毫米，女性的明显更大。
在大多数被研究的大脑中存在中间块，通常连接第三脑室侧壁前上象限。其横截面呈水平椭圆形，形状和大小各异，女性的明显更大。横截面积与第三脑室的大小无关。
