Esophageal leiomyoma detected at thyroid ultrasound (clinical case and brief literature review)
Clinical case of esophageal leiomyoma (rare benign tumor) primary ultrasound diagnosis is presented. Tumor was revealed during routine thyroid ultrasound examination and then verified at esophagogastroduodenoscopy and target biopsy. Percutaneous ultrasound examination showed the echogenic oval lesion (11 х 5 mm), with regular borders and homogeneous echostructure, behind thyroid gland left lobe, in the esophageal projection. It did not shift when swallowed and not strain when compressed by the probe. In color-coded Doppler modes blood flow was not detected in the projection of lesion. In a brief literature review the problems of differential diagnostics of esophageal lesion, imitating thyroid nodes, are considered. Among them pharyngoesophageal diverticulum, fibrovascularpolyp, leiomyoma, schwannoma, and other benign esophageal tumors are presented.