Treatment of Systemic Sclerosis-Associated Calcinosis: A Case Report of Rituximab-Induced Regression of CREST-Related Calcinosis and Review of the Literature

摘要

Objectives: Calcinosis is frequently encountered in patients with systemic sclerosis (SSc) and may be associated with significant morbidity. No treatment has shown so far an unequivocal beneficial effect. Methods: We performed an extensive internet search (MEDLINE) using the keywords calcinosis, calcification, scleroderma, systemic sclerosis, and treatment. Results: Our patient had extensive Calcinosis, Raynaud, Esophagitis, Sclerodactyly, telangiectasia (CREST)-related calcinosis, frequently ulcerating and painful. Following 2 rituximab courses (consisting of 4 weekly infusions, 375 mg/m 2 each), calcinosis significantly improved and pain disappeared. Pharmacologic agents used in the treatment of SSc-associated calcinosis include diltiazem, minocycline, warfarin, biphosphonates, and intravenous immunoglobulin. Other therapeutic approaches include surgical excision, laser vaporization, and extracorporeal shock wave lithotripsy. Conclusions: Evidence for all existing therapies is weak and therefore larger scale controlled studies are needed. Rituximab appears as a promising treatment especially in view of recent evidence that this therapy may be also effective in the underlying disease.