Resolution of Metallic Biliary Stent Allergic Reaction After Partial Stent Removal in a Patient with Nickel Sensitivity.
Local and systemic reactions to implanted metallic devices, particularly to those containing nickel, are well documented. Metal ions are released due to exposure of the metal to blood, proteins, other body fluids, and sheer mechanical stress. Metal ions then complex with native proteins and become antigens, which can elicit hypersensitivity reactions. Another case report depicts a specific allergic complication (early stent occlusion) related to metallic biliary stent implantation. We present a case of allergic symptoms, associated with eating, in a patient who developed nickel sensitivity after biliary metal stent placement confirmed by allergic skin testing to the same metallic biliary stent placed one year earlier. Symptoms resolved following partial removal of the non-epithelialized portion of the biliary stent.
Division of Vascular and Interventional Radiology, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCC-308F, Rosenberg Building, 1 Deaconess Road, Boston, MA, 02215, USA. aesparaz@bidmc.harvard.edu.|Department of Radiology, Beth Israel Deaconess Medical Center, WCC 308-B, 1 Deaconess Road, Boston, MA, 02215, USA. aesparaz@bidmc.harvard.edu.
Anthony M
AM
Esparaz
Division of Vascular and Interventional Radiology, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCC-308F, Rosenberg Building, 1 Deaconess Road, Boston, MA, 02215, USA.
Muneeb
M
Ahmed
D014670:Ampulla of Vater; D001651:Cholestasis, Extrahepatic / Q000628:therapy*; D003137:Common Bile Duct Diseases / Q000628:therapy*; D020878:Device Removal; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis / Q000628:therapy*; D008875:Middle Aged; D009532:Nickel / Q000009:adverse effects*; D010328:Patch Tests; D015607:Stents / Q000009:adverse effects*
D009532:Nickel
Allergic reaction; Allergy; Biliary stent; Hypersensitivity; Metallic; Nickel