Relapsing polychondritis: A clinical update

Area of Science:

• Rheumatology
• Immunology
• Connective Tissue Diseases

Background:

• Relapsing polychondritis (RP) is a rare immune-mediated connective tissue disease characterized by recurrent inflammation of cartilage.
• It typically affects individuals in their fourth and fifth decades, with equal prevalence in both sexes.
• The exact cause remains unknown, but an association with HLA-DR4 antigen is noted.

Purpose of the Study:

• To summarize the key aspects of relapsing polychondritis, including its pathology, diagnosis, and management.
• To highlight the challenges in early diagnosis due to often absent early symptoms.
• To provide an overview of diagnostic criteria and treatment strategies.

Main Methods:

• Review of existing literature on relapsing polychondritis.
• Analysis of pathological features, including cartilage matrix changes and cellular infiltration.
• Examination of diagnostic criteria and clinical manifestations.
• Summary of current treatment approaches for mild and severe cases.

Main Results:

• RP involves inflammation and degeneration of cartilage in various organs like ears, nose, larynx, and cardiovascular system.
• Histological findings include loss of basophilic staining, mononuclear cell infiltration, chondrocyte vacuolation, necrosis, and fibrous replacement.
• Delayed diagnosis is common, occurring in nearly half of cases due to absent early symptoms.
• Diagnosis relies on clinical manifestations and biopsy confirmation, with criteria established by Damiani and Levine.

Conclusions:

• Relapsing polychondritis is a complex immune-mediated disease with unpredictable progression.
• Early recognition and diagnosis are vital for effective management.
• Treatment varies from NSAIDs and low-dose prednisone for mild cases to high-dose corticosteroids for severe manifestations like airway compromise.