Syringomyelia.

Syrinx (Gr. Συρινξ) was a Naiad fresh-water nymph who lived on the cold mountainsides of Arcadia. One day she was amourously pursued by the Greek god Pan, and fleeing from her chaser, she was barred by the river Ladon. She asked for assistance from her Sorores Liquidae (Watery Sisters), who transformed her into a hollow water reed. When the god’s frustrated breath blew over the river, it made a haunting sound. Pan cut the reeds to fashion the first set of pan pipes, which were thenceforth known as syrinx.