21 December 2024
: Case report 
Hydroxychloroquine as a Promising Therapy for Systemic IgG4-Related Disease: A Case Report
Challenging differential diagnosis, Unusual or unexpected effect of treatment, Rare disease
Rienke Fijn AE 1*, Nicky Janssens ABEF 1, Evelien Bodar DE 1, Marianne Marloes Nagtegaal DE 2, Faiz Karim DE 1DOI: 10.12659/AJCR.944731
Am J Case Rep 2024; 25:e944731
Figure 1. Timeline with results of laboratory and imaging tests. Serum IgG4 concentrations were measured with nephelometry. HDQ – hydroxychloroquine; CRP – C-reactive protein; ESR – erythrocyte sedimentation rate; CT – computed tomography; PET-CT – positron emission tomography-computed tomography; FVC – forced vital capacity; FEV1 – forced expiratory volume in 1 second; DLCO – diffusing capacity for carbon monoxide; TLC – total lung capacity.