A disclosed diagnosis for 24 year's unknown illness

Area of Science:

• Immunology
• Nephrology
• Gastroenterology

Background:

• Immunoglobulin G4-related disease (IgG4-RD) is an emerging fibroinflammatory condition.
• IgG4-RD can affect multiple organs, including the kidneys, pancreas, and retroperitoneum.
• Diagnosis can be challenging, often requiring a combination of clinical, serological, radiological, and pathological findings.

Observation:

• A 57-year-old male with a history of chronic kidney disease (CKD), chronic pancreatitis, and operated cholangitis presented with abdominal pain and deteriorating renal function.
• Elevated serum IgG and IgG4 levels were detected.
• CT imaging revealed characteristic findings of IgG4-related retroperitoneal fibrosis, pancreas, and kidney disease.

Findings:

• Endoscopic biopsy confirmed findings consistent with IgG4-RD.
• Steroid therapy resulted in the remission of the patient's abdominal pain.
• The case highlights the potential for IgG4-RD to manifest in patients with CKD of unknown etiology.

Implications:

• IgG4-RD should be considered in the differential diagnosis of CKD with unclear origins.
• Early recognition and treatment of IgG4-RD can lead to favorable patient outcomes.
• This case underscores the multisystemic nature of IgG4-RD and the importance of a comprehensive diagnostic approach.