Comparative Study
Journal Article
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Intravenous immunoglobulins for steroid-refractory esophageal involvement related to polymyositis and dermatomyositis: a series of 73 patients.

OBJECTIVE: To assess the long-term outcome of esophageal complications in the group of patients receiving intravenous immunoglobulins (IVIG) for the treatment of severe steroid-refractory esophageal involvement related to polymyositis/dermatomyositis (PM/DM).

METHODS: We retrospectively reviewed the medical records of 73 patients (39 with PM, 34 with DM) with steroid-resistant esophageal involvement. Esophageal involvement was evaluated by clinical and manometric investigations.

RESULTS: Seventy-three patients with steroid-refractory esophageal involvement related to PM/DM received IVIG therapy (2 gm/kg monthly). The median interval between PM/DM diagnosis and the onset of esophageal complications was 6 months. The most common clinical manifestations revealing esophageal dysfunction were dysphagia (69.9%), coughing while eating (61.6%), and gastroesophageal reflux into the pharynx and/or mouth (34.2%). Twenty-five patients exhibited life-threatening esophageal complications requiring exclusive enteral feeding; 33 patients (45.2%) with esophageal impairment developed aspiration pneumonia. Sixty patients (82.2%) exhibited resolution of esophageal clinical manifestations, leading to a return to normal oral feeding and ablation of feeding enteral tubes. Four other patients (5.5%) improved, although they still experienced mild dysphagia intermittently. Because of impaired cricopharyngeal muscle relaxation, another patient successfully underwent cricopharyngeal myotomy. Eight patients died from aspiration pneumonia (n=6) and cancer (n=2). Muscle weakness, thoracic myopathy, and aspiration pneumonia were independent predictive factors of IVIG-treated esophageal complications in PM/DM patients.

CONCLUSION: Our findings indicate that IVIG should be considered in life-threatening esophageal impairment complicating steroid-resistant PM/DM. We also suggest that combined therapy of IVIG and high-dose steroids may be the first-line therapy in PM/DM patients with life-threatening esophageal manifestations.

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