Imaging findings of primary malignant melanoma of the esophagus: A case report

Primary melanoma of the esophagus is not frequently encountered clinically but rather high degree malignant that have a poor prognosis. Here we report an uncommon case of primary melanoma of the esophagus with nodal metastasis over the right neck and discuss its radiographic findings, including esophagogram, contrast-enhanced computed tomography (CECT), sonography of neck and positron emission tomography (PET). When characteristic findings as polypoid, intraluminal, and nonobstructive masses are present on image studies, some diagnosis such as spindle cell carcinoma, leiomyosarcoma and lymphoma should be considered first. However, the diagnosis of primary esophageal melanoma always should be kept in mind despite of its rarity.