Primary malignant nerve sheath tumor of the gasserian ganglion: a report of two cases.

Primary tumors of the gasserian ganglion are usually benign, and secondary tumors are malignant. We report two cases of a malignant primary tumor of the gasserian ganglion, bringing the total in the world literature to five. The presentation, etiological features, and treatment of these cases are reviewed, together with a review of the literature.

Laser-induced dorsal root entry zone lesions for pain control. Report of three cases.

Dorsal root entry zone lesions have been documented as effective for control of intractable pain in patients with brachial plexus avulsion or severe spinal cord injury. These lesions are usually made with the radiofrequency technique. The authors report three cases in which the CO2 laser was used as an alternative means of making the lesions.

Cerebrospinal fluid rhinorrhea as a presentation of pituitary adenoma.

We report a patient with a pituitary adenoma who presented with only cerebrospinal fluid rhinorrhea. A radiologically unrecognized defect in the floor of the sella was observed at operation.

Complete obliteration of a carotid cavernous fistula with sparing of the carotid blood flow using a detachable balloon catheter.

A detachable balloon catheter system is described which has several distinct advantages over pre-existing methods of "intervention radiology". It is anticipated that further refinements in this technique will continue to expand the uses for this procedure.