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Pathophysiology and Grading of the Ventral Displacement of Dorsal Spinal Cord Spectrum
Amarnath Chellathurai,Suhasini Balasubramaniam,Sathyan Gnanasihamani,Sukumar Ramasamy,Jayamani Durairajan 대한척추외과학회 2018 Asian Spine Journal Vol.12 No.2
Study Design: A retrospective study of the ventral displacement of dorsal spinal cord (VDDSC) spectrum pathophysiology and grading. Purpose: This study aimed at examining the pathophysiology of VDDSC between D3 and D7, using magnetic resonance imaging (MRI) correlation and severity grading. Overview of Literature: The pathologies that lead to VDDSC were previously discussed in various articles. We attempted to group these pathological conditions under a single spectrum, and grade them according to their severity. Methods: We reviewed the MRI images of the dorsal spines of 1,350 patients over a period of 4 years (February 2013–February 2017); all MRI images were analyzed by two experienced radiologists. Results: Of the 1,350 patients, 28 exhibited VDDSC between D3 and D7. Additional findings included ventral transdural herniation of the spinal cord (n=10), anterior spinal cord adhesion (n=7), arachnoid web (n=6), and arachnoid cyst (n=5). Conclusions: We grouped the pathologies that lead to VDDSC at the thoracic level into a single spectrum of varying severity and graded VDDSC, from mild to severe.