Esophageal Gastrointestinal Stromal Tumor Presenting as a Mediastinal Mass: a case report

Although gastrointestinal stromal tumor (GIST) is the most common mesenchymal neoplasm of the gastrointestinal tract, it rarely arises from the esophagus and is thus very rarely the cause of a mediastinal mass. We report a case of esophageal GIST presenting as a mediastinal mass in a 59-yearold male. If such a tumor has extremely exophytic growth, it may result in a huge mediastinal mass without causing dysphagia. The CT features of a huge well-demarcated mass with heterogeneous enhancement and extensive central necrosis may mimic that of a primary sarcoma of the mediastinum. Esophageal GIST should be in the differential diagnosis of a mediastinal mass, even if there is little evidence of luminal involvement of the esophagus demonstrated on imaging.