[Clinical presentation of a dorsal epidural arachnoid cyst after an epidural anesthesia].

Background: Arachnoid cysts are dural diverticula with liquid content similar to cerebrospinal fluid, with 1% occurring in the spinal cord. They locate mainly in the dorsal region of the thoracic spine, and are unusual causes of spinal cord compression.

Clinical Case: The case is presented of a previously healthy 15-year-old boy, with a 20-month history of spastic paraparesis that started apparently after epidural block for ankle osteosynthesis.

[Spinal osteochondroma: diagnostic imaging and treatment. Case reports].

Background: Osteochondromas are benign bony tumours, with only 1 to 4% being located in the spine. It occurs more frequently in the cervical spine, with C2 being the vertebra most affected. The neurological presentation is slow due to the growth characteristics of the tumour.