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Αλέξανδρος Γ. Σφακιανάκης

Tuesday, June 22, 2021

Massa intermedia of the thalamus: an anatomical study using magnetic resonance imaging

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Surg Radiol Anat. 2021 Jun 18. doi: 10.1007/s00276-021-02788-5. Online ahead of print.

ABSTRACT

PURPOSE: Few studies have explored the morphology of massa intermedia (MI). The aim of the present study was to characterize it using magnetic resonance imaging (MRI).

METHODS: A total of 205 patients were enrolled in this study. Following initial examinations with conventional MRI sequences, thin-slice coronal and sagittal T2-weighted imaging was performed. For MI localizati on, the third ventricle was arbitrarily divided into nine areas on the midsagittal image.

RESULTS: MI was identified in 93% of the total patients-89% in male and 91% in female patients. Among them, 68% showed a single, styloid-shaped MI with variable thickness and cross sectional configuration, followed by broad and double MIs that were found in 18% and 10% patients, respectively. In the anteroposterior dimension, 99% of the MIs were identified in the middle third area, followed by the posterior third area. In the supero-inferior dimension, 95% of the MIs were identified in the middle third area, followed by the upper third area. With a significant difference, a broad MI was more frequently found in women than in men.

CONCLUSIONS: MIs are commonly located in the middle third of the third ventricle as a single commissure with high morphological variability. Compared to men, women may have a well-developed, broader MI.

PMID:34143235 | DOI:10.1007/s00276-021-02788-5

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