Affiliations: [a] Department of Ultrasound, Shandong Provincial Hospital affiliated to Shandong University, Shandong University, Jinan, Shandong, P.R. China | [b] Department of Radiology, Shandong Provincial Hospital affiliated to Shandong University, Shandong University, Jinan, Shandong, P.R. China | [c] Department of Pathology, Shandong Provincial Hospital affiliated to Shandong University, Shandong University, Jinan, Shandong, P.R. China | [d] Shandong Medical Imaging Research Institute, Shandong University, Jinan, Shandong, P.R. China
Correspondence:
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Corresponding author: Professor Ximing Wang, Shandong Medical Imaging Research Institute, Shandong Provincial Key Laboratory of Diagnosis and Treatment of Cardio-Cerebral Vascular Disease, Shandong University, No. 324, Jingwu Road, Jinan, Shandong 250021, P.R. China. Tel.: +86 531 68770780; Fax: +86 531 68776707; E-mail: [email protected].
Abstract: Osteoblastoma is a rare benign primary bone tumor, which occurs in any part of the skeleton. Extraskeletal osteoblastoma is rather rare. We presented an extremely rare case of extraskeletal osteoblastoma located in the breast. The tumor recurred 7 months later after resection and transformed to aggressive osteoblastoma. The histopathological features, ultrasonic manifestations and ultrasonic differential diagnoses of the primary and recurrent tumors were discussed. The recommended treatment of the tumor is surgical excision. Due to its tendency of recurrence and potential malignant transformation, adequate resection and careful follow up is essential.
Keywords: Extraskeletal osteoblastoma, breast tumor, ultrasound, cancer diagnose, cancer recurrence
