Purpose : The objective of augmentation mammoplasty includes reconstruction and cosmesis after breast surgery.lncreasing frequency of the procedure has been related with increased complications. Authors evaluated the valueof breast MRI in the diagnosis of complications after augmentation mammoplasty. Materials and Methods : Authorsstudied 42 breasts of 24 patients, who had undertaken augmentation mammoplasty. We evaluated findings ofmammography, ultrasonography, and breast MRI in all patients. We used variable MRI sequences for better evaluationof implant status. The results were compared with the findings in surgical field. Results : In all imagingstudies, nodule or mass was indentifiable in the cases of interstitial paraffine injection(8 breasts),interstitial silicon injection(7 breasts), and herb medication(2 breasts). However, the differentitation betweenmalignant and benign nodule was only possible at dynamic breast MRI. Mammogram was not helpful in the evaluationof extracapsular rupture in the cases of silastic bag insertion. In sonogram, identification of echogenic materialwas possible, although, false negative and false positive rate were high. MRI was able to visualize contour ofentire implant and it was able to easily recognize low signal internal structure. Conclusion : MRI was the mostaccurate diagnostic tool in the evaluation of the character of the palpable mass after augmentation mammoplastyand early detection of breast implant rupture.