Intraosseous ganglion of the phalanx.

Intraosseous ganglions occurring in the hand are rare. Most reported cases involve the lunate or the scaphoid. This report presents a very extremely rare case of intraosseous ganglion arising in the middle phalanx of an index finger. Multi-modality imaging features using plane radiograph, CT, and MRI of this ganglion are presented for the first time.