Contralateral Internal Mammary Lymphadenopathy Mimicking Metastasis in a Patient with a History of Breast Cancer and Prior Interstitial Mammoplasty by Paraffin Injection: MRI, PET-CT, and Pathological Findings

ABSTRACT

Foreign body injections into breasts may produce foreign body reactions, fibrosis, and local swelling of involved lymph nodes, which can be misdiagnosed as metastasis or malignancy. Here, the authors report MR imaging, PET-CT imaging, and pathologic findings of contralateral internal mammary lymphadenopathy suspicious of breast cancer metastasis in a 58-year-old woman with history of left breast cancer, and previous interstitial mammoplasty by paraffin injection in both breasts.