摘要:Carcinoma breast is the commonest malignancy among the females in developed countries.These patients require Radiation Therapy as an integral part of multimodality treatment.Surgery commonly involves breast conservation,with or without breast reconstruction.One of our patients underwent modified radical mastectomy with immediate breast reconstruction using a temporary tissue expander.Postoperative irradiation was delivered to the breast mound encompassing the tssue expander.The effect of post-operative radiotherapy (port) in a patient who was treated with radiotherapy with the tissue expander in situ was assessed and reported here.The purpose of this study was to quantify the radiation dose distribution due to the presence of tissue expander and determine its potential contribution towards complication rate.