Volume 15, Issue 8 pp. 891-898
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Vasculitic neuropathy in a patient with cryoglobulinemia and anti-MAG IGM monoclonal gammopathy

Dr. Florian P. Thomas MD

Corresponding Author

Dr. Florian P. Thomas MD

Department of Pathology, Division of Neuropathology, College of Physicians and Surgeons, Columbia University, New York, New York

Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York

Clinical Research Institute of Montreal, 110 Pine Avenue West, Montreal, Canada, H2W 1R7Search for more papers by this author
Dr. Robert E. Lovelace MD

Dr. Robert E. Lovelace MD

Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York

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Dr. Xin-Sheng Ding MD

Dr. Xin-Sheng Ding MD

Department of Pathology, Division of Neuropathology, College of Physicians and Surgeons, Columbia University, New York, New York

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Dr. Saud A. Sadiq MD

Dr. Saud A. Sadiq MD

Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York

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Dr. George W. Petty MD

Dr. George W. Petty MD

Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York

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Dr. William H. Sherman MD

Dr. William H. Sherman MD

Department of Internal Medicine, College of Physicians and Surgeons, Columbia University, New York, New York

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Dr. Norman Latov MD, PhD

Dr. Norman Latov MD, PhD

Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York

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Dr. Arthur P. Hays MD

Dr. Arthur P. Hays MD

Department of Pathology, Division of Neuropathology, College of Physicians and Surgeons, Columbia University, New York, New York

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First published: August 1992
Citations: 40

Abstract

A patient with sensorimotor mononeuritis multiplex had a type II cryoglobulin with an IgM kappa M-protein that appeared to contain monoclonal anti-MAG antibodies of the same isotype. A sural nerve biopsy demonstrated necrotizing arteritis and features of both axonal degeneration and demyelination. IgM kappa and C3 deposits were present on the myelin sheath of some residual nerve fibers. The findings suggest that the anti-MAG antibodies contributed to the myelin damage, while cryoprecipitates may have caused the vasculitis and axonal degeneration. © 1992 John Wiley & Sons, Inc.

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