Case 1: A 42-year-old man was diving in 45 meters of seawater for 30 minutes and surfaced without decompression stops. After 30 minutes, he dove again, this time at 45 meters for 30 minutes, and ...

MRI of cervical and thoracic spine. (A) Sagittal T2 image of cervical and upper thoracic spine showing syrinx (arrow) in spinal cord. (B) Sagittal T2 images of lower cervical and thoracic spine ...