Abstract
Hydatid cyst is a well-known pathology today. Although uncommon in Western countries, it remains endemic in countries with a strong livestock culture. It is caused by Echinococcus granuloses, whose larval form develops in herbivores, primarily sheep, before infecting dogs. Humans, however, are considered accidental hosts. In the vast majority of cases, the liver and then the lungs are affected, but any organ can be involved, leading to atypical locations. Here, we present the case of a 32-year-old female patient who presented with a clinical picture of back pain and slow spinal cord compression. Imaging revealed a 12 cm polycystic dorsal costovertebral mass compressing the spinal cord. A decompressive laminectomy was performed, resulting in a reduction of spasticity.