title: A case of papillary thyroid cancer recurring as an esophageal submucosal tumor.
abstract: A 75-year-old woman who underwent a total thyroidectomy for papillary thyroid cancer 7 years previously presented with a palpable neck mass. Computed tomography (CT) showed two metastatic masses on the thyroid bed and another mass that looked benign originating from the esophageal wall. Endoscopic ultrasonography (EUS) showed a hypoechoic mass in the esophageal wall that looked similar to a gastrointestinal stromal tumor. The mass on the esophagus had intense fluorodeoxyglucose (FDG) uptake in positron emission tomography-computed tomography (PET-CT), which suggested the possibility of malignancy. Subsequently, after surgery, the mass in the esophagus was confirmed as a metastasis from the thyroid papillary carcinoma. Here we report this unusual case of papillary thyroid cancer that recurred as an esophageal submucosal tumor.
authors.affiliation: Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea.
authors.forename: Hyeog Gyu
authors.initials: HG
authors.lastname: Seoung
authors.forename: Ji Hye
authors.initials: JH
authors.lastname: Kim
authors.forename: Jeong Cheon
authors.initials: JC
authors.lastname: Choi
authors.forename: Sang Mi
authors.initials: SM
authors.lastname: Kim
authors.forename: Sang Soo
authors.initials: SS
authors.lastname: Kim
authors.forename: Bo Hyun
authors.initials: BH
authors.lastname: Kim
authors.forename: In Ju
authors.initials: IJ
authors.lastname: Kim
authors.forename: Geun Am
authors.initials: GA
authors.lastname: Song
authors.forename: Gwang Ha
authors.initials: GH
authors.lastname: Kim