Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
Sustained Eosinophilic Cholangitis Due to a Mite Allergy Mimicking Sclerosing Cholangitis
Masayo MotoyaShun TakaiHiroshi MoriyaTakehiro HiranoKohei WagatsumaYasunao NumataYujiro KawakamiYoshiharu MasakiKeisuke IshigamiAyako MurotaHiroshi Nakase
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JOURNAL OPEN ACCESS

2022 Volume 61 Issue 16 Pages 2477-2482

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Abstract

Eosinophilic cholangiopathy (EC) presents with thickening and stenosis of the bile duct wall that is histologically characterized by eosinophil infiltration. The diagnosis is often difficult. We herein report a patient who had been followed up with a diagnosis of primary sclerosing cholangitis but had a final diagnosis of EC based on eosinophilia, histological findings of bile duct and liver biopsy specimens, and a review of a previous surgical specimen of the gallbladder. Antigen tests, isolation from her house, and accidental re-exposure to the antigen revealed that the causative antigen was the mite Dermatophagoides pteronyssinus.

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© 2022 by The Japanese Society of Internal Medicine
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