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Published in: Surgical and Radiologic Anatomy 2/2024

08-01-2024 | Magnetic Resonance Imaging | Original Article

Massa intermedia in adults: incidence, dimension, location and clinical importance

Authors: Orhan Beger, Baran Can Alpergin, Murat Zaimoglu, Ozgur Orhan, Mustafa Cemil Kılınç, Sena Unal, Halit Anil Eray, Umit Eroglu

Published in: Surgical and Radiologic Anatomy | Issue 2/2024

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Abstract

Purpose

This retrospective magnetic resonance imaging investigation aimed to obtain information related to the anatomy of the massa intermedia (MI) in an adult population.

Methods

The work conducted on MRI views of 1058 (539 males and 519 females) healthy adult samples aged with 48.93 ± 17.63 years. Initially, the presence or absence of MI was noted, and then if present, its numbers and location in the third ventricle were recorded. Its horizontal (HDMI) and vertical (VDMI) diameters were measured on MRI views, while the cross-sectional area (CSAMI) was calculated using its diameters.

Results

MI was missing in 2.6% (27 cases) of 1058 adult samples. Six subjects (0.6%) had a double MI. HDMI, VDMI and CSAMI were measured as 4.83 ± 1.01 mm, 4.86 ± 0.98 mm, and 19.11 ± 7.23 mm2, respectively. MI size did not show a significant alteration from 19 up to 49 years, but then its size distinctly decreased between 50 and 60 years. After age 60, MI dimension did not display an important change. MI was settled in the antero-superior quadrant in 929 cases (90.63% of 1025 subjects), in the postero-superior quadrant in 22 cases (2.15%), in the antero-inferior quadrant in 32 cases (3.12%), in the postero-inferior quadrant in 8 cases (0.78%), and in the central part in 34 cases (3.32%).

Conclusions

The size, position and incidence of MI were not affected by sex, and its position and incidence were not affected by adult age periods. In adults, MI size demonstrated a significant decrease in the middle age.
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Metadata
Title
Massa intermedia in adults: incidence, dimension, location and clinical importance
Authors
Orhan Beger
Baran Can Alpergin
Murat Zaimoglu
Ozgur Orhan
Mustafa Cemil Kılınç
Sena Unal
Halit Anil Eray
Umit Eroglu
Publication date
08-01-2024
Publisher
Springer Paris
Published in
Surgical and Radiologic Anatomy / Issue 2/2024
Print ISSN: 0930-1038
Electronic ISSN: 1279-8517
DOI
https://doi.org/10.1007/s00276-023-03274-w

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