Post mastectomy reconstruction using the internal  mammary artery perforator  (!MAP) flap, previously  called  breast-sharing technique, is an appealing procedure  because  it utilizes  the tissue  to  be excised  during  reduction  of  the residual  breast  to achieve  symmetry.  Literature mentioned that this  tissue  is supplied  by the lower !MAPs with no further  details.  The  aim of this study was tore-explore the old theme of breast-sharing by describing the !MAPs included in the pedicle of this breast-derived flap via using color Duplex  ultrasound preoperatively, thus re-introducing the flap under  a name  relating  to its exact  vascular  supply, that is, !MAP  flap. Six  breasts  of six patients  presented  for post mastectomy reconstruction were preoperatively screened  via color  duplex,  and were  operated  on. Three  cases (50  %) underwent completely successful  !MAP  flap  breast  reconstruction, two (66. 7 %)  experienced partial  flap  loss,  and one patient  (16. 7 %)  had total  flap necrosis.  We see the !MAP  flap deserves  to be within  the repertoire of the plastic  surgeon to be prudently employed in the properly  selected  patients.