Images of diagnostic MRI-detected axillary recurrence in a 44-year-old woman.Mammography and axillary US screening conducted 6 months after surgery revealed no abnormalities in the breast and axilla (not shown). A palpable mass in the left breast and axilla developed after 4 months, and a restaging breast MRI was performed. Fat-suppressed contrast-enhanced T1-weighted axial MRI scans show suspicious enhancing level I (arrow) LNs in the left axilla. This patient was confirmed to have 1 metastatic LN among the 28 resected axillary LNs.US = ultrasound; LN = lymph node; MRI = magnetic resonance imaging.