Eosinophilic Esophageal Myositis.

Eosinophilic esophageal myositis (EoEM) is a rare condition affecting the muscularis propria without any involvement of the squamous epithelium or submucosa. Patients may present with chest pain, dysphagia, weight loss, or recurrent episodes of food impaction. Similar symptoms are also seen in eosinophilic esophagitis making the diagnosis difficult. Endoscopic ultrasound helps define muscularis propria layer involvement and allows for deeper biopsy. Early diagnosis is essential as EoEM can be treated medically, although surgical and endoscopic interventions might be required. We encountered a 73-year-old man with EoEM diagnosed with endoscopic ultrasound and successfully treated with steroids.