Spinal root and plexus hypertrophy in chronic inflammatory demyelinating polyneuropathy.

MRI was performed on the spinal roots, brachial and lumbar plexuses of 14 patients with chronic inflammatory demyelinating polyneuropathy (CIDP). Hypertrophy of cervical roots and brachial plexus was demonstrated in eight cases, six of whom also had hypertrophy of the lumbar plexus. Of 11 patients who received gadolinium, five of six cases with hypertrophy and one of five without hypertrophy demonstrated enhancement. All patients with hypertrophy had a relapsing-remitting course and a significantly longer disease duration. Gross onion-bulb formations were seen in a biopsy of nerve from the brachial plexus in one case with clinically evident nodular hypertrophy. We conclude that spinal root and plexus hypertrophy may be seen on MRI, particularly in cases of CIDP of long duration, and gadolinium enhancement may be present in active disease.

Vertebral artery dissection diagnosed with CT.

Vertebral artery dissection after neck manipulation has been well described. A case of bilateral vertebral artery dissection diagnosed with dynamic CT scanning of the neck is reported. The CT appearances and correlative angiographic and MR findings are presented.

Infantile myofibromatosis: a radiological review.

Infantile myofibromatosis is an unusual condition generally presenting in the newborn period. It may be solitary or multicentric. Sites involved include skin and subcutaneous tissues, muscle, bones and viscera. Nine cases are presented, including one case in an identical twin whose co-twin remained asymptomatic. The radiological features and differential diagnosis are discussed.