RT Journal Article SR Electronic T1 Incidental Finding of Breast Tumor After Scoliosis Surgery: A Case Report JF International Journal of Spine Surgery JO Int J Spine Surg FD International Society for the Advancement of Spine Surgery SP 8647 DO 10.14444/8647 A1 Chiu, Yen-Chun A1 Yang, Shih-Chieh A1 Kao, Yu-Hsien A1 Hung, Chao-Ming A1 Tu, Yuan-Kun YR 2024 UL https://www.ijssurgery.com/content/early/2024/10/13/8647.abstract AB Introduction Breast asymmetry (BA) is a common condition in patients with adolescent idiopathic scoliosis (AIS). Physicians may misdiagnose a patient with a unilateral breast tumor as a normal condition related to scoliosis. The present report describes the case of a patient with a breast tumor that was detected incidentally after surgical correction of scoliosis.Patient Presentation and Outcomes A 21-year-old woman was diagnosed as having AIS and reported to our institute for management. Thoracic third to lumbar second vertebra instrumented spine de-rotation and associated fusion surgery were performed to correct the deformity. After the operation, enlargement of left breast volume and obvious BA were noted. Breast sonography was performed, and a large tumor was found. Finally, the biopsy revealed a fibroadenoma of the left breast.Conclusions In managing patients with scoliosis and BA, comprehensive consideration of other possible etiologies is crucial to prevent misdiagnosis. This article reminds physicians that breast tumors can be concealed by BA related to AIS.Level of Evidence 5.