Intrinsic hemangiomas of the peripheral nerves report of a case and review of the literature.

A case of intrinsic hemangioma of the peripheral nerves and the diagnostic and therapeutic problems associated with these tumors is reviewed. Of the preoperative studies available, magnetic resonance imaging and to a lesser degree computed axial tomography are the most helpful in diagnosis. Angiograms are not helpful. Specific laboratory studies to evaluate lymphoproliferative disorders are necessary if lymphadenopathy can be ruled out. Needle biopsies should be avoided as they may result in nerve injuries. During surgery the recognition of the tumor as a hemangioma is of prime importance in order to avoid damage to the nerve structures. More aggressive resections that might sacrifice the nerve should be postponed if an intraoperative diagnosis is not possible. This will provide for a complete histopathological evaluation rather than reliance upon frozen section interpretations.