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Updated: Aug 17, 2026

Robotic Enucleation of Esophageal Leiomyoma
Published on: February 20, 2026
Retrotracheal thymoma masquerading as esophageal submucosal tumor
Sheung-Fat Ko1, Yuan-Hsiung Tsai, Hsuan-Ying Huang
1Departments of Radiology, Chang Gung University, Chang Gung Memorial Hospital at Kaohsiung, Kaohsiung Hsien, Taiwan, China.
Abstract:
A 42-year-old man presented with a two-year history of progressive dysphagia and hoarseness. Esophagogram and endoscopy revealed submucosal mass effect on the upper esophagus. Computed tomography and magnetic resonance imaging revealed an elongated mass in the retrotracheal region of the lower neck with extension to the posterior mediastinum. Partial tumor resection and histopathological evaluation revealed a WHO type B2 thymoma. Adjuvant radiation and chemotherapy were subsequently administered resulting in complete tumor regression. To our knowledge, this is the first report of ectopic retrotracheal thymoma with clinical and imaging manifestations mimicking those for esophageal submucosal tumor.
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