A preliminary descriptive study on the histology of giant calcified disc herniations: a case series

Purpose Giant thoracic disc herniations (GTDH) are rare but severe lesions that may lead to significant spinal cord compression and neurological impairment. These herniations are frequently calcified, increasing the risk of irreversible damage. The aim of this preliminary case series is to provide a descriptive histological analysis of surgically removed calcified GTDH in three adult patients. Methods All the three patients underwent anterior transthoracic surgical excision, which is commonly adopted due to the anterior location of the compression. The harvested disc tissue was submitted for histopathological analysis using hematoxylin and eosin staining only. Results Histology revealed degenerative fibrocartilaginous tissue with dystrophic calcifications, consistent with disc-derived material rather than isolated ossification of the posterior longitudinal ligament. Conclusion This observation contributes to the descriptive characterization of calcified GTDH and challenges recent alternative hypotheses. Due do the limited sample size and descriptive methodology, these findings should be considered hypothesis-generating. Further research is warranted to better understand the etiopathogenesis and guide evidence-based therapeutic strategies for this rare but clinically relevant condition.