1. Pathologic manifestations of levamisole-adulterated cocaine exposure.
- Author
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Nolan AL and Jen KY
- Subjects
- Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis immunology, Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis pathology, Antibodies, Antineutrophil Cytoplasmic analysis, Biomarkers analysis, Biopsy, Glomerulonephritis immunology, Glomerulonephritis pathology, Humans, Kidney immunology, Kidney pathology, Levamisole analysis, Predictive Value of Tests, Prognosis, Skin immunology, Skin pathology, Vasculitis, Leukocytoclastic, Cutaneous immunology, Vasculitis, Leukocytoclastic, Cutaneous pathology, Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis chemically induced, Central Nervous System Stimulants analysis, Cocaine analysis, Cocaine-Related Disorders complications, Drug Contamination, Glomerulonephritis chemically induced, Kidney drug effects, Levamisole adverse effects, Skin drug effects, Vasculitis, Leukocytoclastic, Cutaneous chemically induced
- Abstract
Rheumatic manifestations of cocaine have been well described, but more recently, a dramatic increase in the levamisole-adulterated cocaine supply in the United States has disclosed unique pathologic consequences that are distinct from pure cocaine use. Most notably, patients show skin lesions and renal dysfunction in the setting of extremely high perinuclear anti-neutrophil cytoplasmic antibodies (p-ANCA). Unexpectedly, antibodies to myeloperoxidase, the typical target of p-ANCA, are relatively low if at all present. This discrepancy is due to the fact that p-ANCA seen in association with levamisole-adulterated cocaine exposure is often directed against atypical p-ANCA-associated antigens within the neutrophil granules such as human neutrophil elastase, lactoferrin, and cathepsin G. Biopsies of the skin lesions reveal leukocytoclastic vasculitis often involving both superficial and deep dermal vessels. Renal injury most typically manifests as crescentic and necrotizing pauci-immune glomerulonephritis. In this review, the manifestations of levamisole-adulterated cocaine-induced vasculitis are discussed with an emphasis on the typical histomorphologic findings seen on biopsy., Virtual Slides: The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1764738711370019 .
- Published
- 2015
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