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IgG4 disease.

Motohisa Yamamoto1, Masato Hashimoto, Hiroki Takahashi

  • 1Department of Gastroenterology, Rheumatology and Clinical Immunology (MY, HT, YS), Sapporo Medical University School of Medicine, Sapporo, Japan; and Department of Ophthalmology (HM), Sapporo Medical University School of Medicine, Sapporo, Japan.

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Immunoglobulin G4-related disease (IgG4-RD) is a chronic inflammatory condition affecting multiple organs. This review covers IgG4-RD diagnosis, treatment with corticosteroids, and potential relapses.

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Area of Science:

  • Rheumatology
  • Ophthalmology
  • Pathology

Background:

  • Immunoglobulin G4-related disease (IgG4-RD) is a chronic inflammatory condition.
  • Characterized by elevated IgG4 serum levels and IgG4-positive plasma cell infiltration.
  • Affects organs like lacrimal/salivary glands, pancreas, thyroid, lungs, and kidneys.

Observation:

  • IgG4-related ophthalmic disease involves orbital myositis, perineuritis, and inflammation.
  • Infraorbital nerve enlargement on MRI is a key diagnostic sign.
  • Systemic screening is crucial for diagnosis and differentiating from neoplasms.

Findings:

  • Corticosteroids are effective for inducing remission in IgG4-RD.
  • Relapses can occur during corticosteroid tapering.
  • This review details the history, clinical features, diagnostics, treatment, and prognosis.

Implications:

  • Accurate diagnosis of IgG4-RD requires systemic evaluation.
  • Understanding disease progression and relapse patterns is vital for patient management.
  • Further research may improve long-term treatment strategies for IgG4-RD.