open access

Vol 79, No 1 (2020)
ORIGINAL ARTICLES
Published online: 2019-04-16
Submitted: 2018-11-24
Accepted: 2019-02-28
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Position and size of massa intermedia in Serbian brains

M. N. Pavlović, I. D. Jovanović, S. Z. Ugrenović, A. V. Kostić, B. K. Kundalić, V. R. Stojanović, S. Vlajković, M. M. Trandafilović, J. R. Čukuranović-Kokoris, M. M. Antić
DOI: 10.5603/FM.a2019.0046
·
Pubmed: 30993663
·
Folia Morphol 2020;79(1):21-27.

open access

Vol 79, No 1 (2020)
ORIGINAL ARTICLES
Published online: 2019-04-16
Submitted: 2018-11-24
Accepted: 2019-02-28

Abstract

Background: 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. Materials and methods: Our investigation was performed on 41 brains of adult Serbian cadavers using a macro dissection method. Results: 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. Conclusions: 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.

Abstract

Background: 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. Materials and methods: Our investigation was performed on 41 brains of adult Serbian cadavers using a macro dissection method. Results: 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. Conclusions: 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.

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Keywords

adhesio interthalamica, human brains, cadaver, incidence, position, thalamus

About this article
Title

Position and size of massa intermedia in Serbian brains

Journal

Folia Morphologica

Issue

Vol 79, No 1 (2020)

Pages

21-27

Published online

2019-04-16

DOI

10.5603/FM.a2019.0046

Pubmed

30993663

Bibliographic record

Folia Morphol 2020;79(1):21-27.

Keywords

adhesio interthalamica
human brains
cadaver
incidence
position
thalamus

Authors

M. N. Pavlović
I. D. Jovanović
S. Z. Ugrenović
A. V. Kostić
B. K. Kundalić
V. R. Stojanović
S. Vlajković
M. M. Trandafilović
J. R. Čukuranović-Kokoris
M. M. Antić

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