• Lin-Jing Wang, Chun-Mei Liu, Xin Chen, Li Zhang, and Hong-Wei Zhou.
• Department of Radiology, The First Hospital of Jilin University Department of Gynecology, Obstetrics and Gynecology Hospital of Changchun City, Changchun, China.
• Medicine (Baltimore). 2017 Dec 1; 96 (51): e9465e9465.

RationaleAn accessory thyroid gland (ATG) in the right ventricle is an extremely rare condition. Described herein are histological findings of ATG in the right ventricle found in a patient with a normal cervical thyroid gland.Patient ConcernsA 53-year-old woman was referred to our hospital after experiencing intermittent precordial pain for 2 years.DiagnosesThe mass in the right ventricle was diagnosed pathologically as ATG.InterventionsComplete excision was performed because of the patient's intermittent precordial pain and to exclude the possibility of malignancy.OutcomeThe patient's pain was resolved. No recurrence was observed during the 6-month follow-up.LessonsAfter review and analysis of the case, we found that plain and contrast-enhanced computed tomography scans showed that the mass had a similar intensity and enhancement to a cervical thyroid gland, which we think may be a useful clue for making a preoperative diagnosis of ATG.Copyright © 2017 The Authors. Published by Wolters Kluwer Health, Inc. All rights reserved.

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