title: Unusual uptake of radioiodine in a retroperitoneal bronchogenic cyst in a patient with thyroid carcinoma.
abstract: The incidence of retroperitoneal bronchial cyst is rare and is unusual to be visualized on I scan. We report a 52-year-old man who received I therapy for papillary thyroid cancer. The postablation whole-body scan revealed increased radioiodine activity in the left abdomen. SPECT/CT localized this activity from a soft tissue mass in the retroperitoneal space. A retroperitoneal tumor was considered, and retroperitoneal laparoscopic tumor resection was performed. Pathologic examination confirmed a retroperitoneal bronchogenic cyst.
authors.affiliation: From the Departments of *Nuclear Medicine, †Urology, and ‡Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Jiang
authors.forename: Hao
authors.initials: H
authors.lastname: Zeng
authors.forename: Jing
authors.initials: J
authors.lastname: Gong
authors.forename: Rui
authors.initials: R
authors.lastname: Huang
mesh_terms: D001994:Bronchogenic Cyst / Q000000981:diagnostic imaging*; D002277:Carcinoma / Q000532:radiotherapy*; D002291:Carcinoma, Papillary; D006801:Humans; D007457:Iodine Radioisotopes / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D064847:Multimodal Imaging; D019275:Radiopharmaceuticals / Q000627:therapeutic use; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging*; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000532:radiotherapy*; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed
chemical_list: D007457:Iodine Radioisotopes; D019275:Radiopharmaceuticals