Internal mammary artery perforator propeller flap for contralateral mastectomy defect: A case report

The internal mammary artery perforator (IMAP) flap can be used as either loco-regional or free flap, and provides thin flexible coverage for defects of the chest wall and cervical regions. In this report, we present a bilateral mastectomy case in which the left mastectomy defect was closed with an IMAP propeller flap harvested from the right breast. Our patient with a history of left breast conservation therapy was diagnosed invasive ductal carcinoma in her left breast 14 years later. On physical examination, the patient's left breast displayed the stigmata of radiotherapy including dark discoloration and firmness to palpation, compared to contralateral pendulous breast. After bilateral mastectomy, an IMAP flap with a size of 26 cm × 11 cm was harvested from right chest and was transposed 180 degrees clockwise in a propeller fashion to the left mastectomy defect without any tension. The flap survived without any complication and the patient was free of recurrence or metastases during the follow-up of 18 months. The patient was satisfied with the outcome. IMAP propeller flap could be harvested safely to the anterior axillary fold in the subcutaneous fat plane. It may provide a large skin paddle especially in large breasted women. © 2016 Wiley Periodicals, Inc. Microsurgery, 2016.

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