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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

Miljana Nikola Pavlović, Ivan Diman Jovanović, Sladjana Zoran Ugrenović, Aleksandar Velimir Kostić, Braca Kasim Kundalić, Vesna Ratko Stojanović, Slobodan Vlajković, Milena Mića Trandafilović, Jovana Rade Čukuranović-Kokoris, Milorad Milan Antić
DOI: 10.5603/FM.a2019.0046
·
Pubmed: 30993663

open access

Ahead of Print
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 one 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 one 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

Ahead of Print

Published online

2019-04-16

DOI

10.5603/FM.a2019.0046

Pubmed

30993663

Keywords

adhesio interthalamica
human brains
cadaver
incidence
position
thalamus

Authors

Miljana Nikola Pavlović
Ivan Diman Jovanović
Sladjana Zoran Ugrenović
Aleksandar Velimir Kostić
Braca Kasim Kundalić
Vesna Ratko Stojanović
Slobodan Vlajković
Milena Mića Trandafilović
Jovana Rade Čukuranović-Kokoris
Milorad Milan Antić

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