[The imaging study of internal mammary artery and its branches ]

OBJECTIVE

To investigate the distribution of the internal mammary artery and its branches by the multi-slice spiral CT angiography, and to explore the feasibility of transferring pedicled transverse rectus abdomials myocataneous (TRAM) flap for breast reconstruction through resection of inferior costicartilages.

METHODS

30 female patients received abdominal CT angiography. (1) The distance between internal mammary artery and the sternum midline were recorded; (2) The position and the numbers of branches from bilateral internal mammary arteries at the level of 5th, 6th, 7th rib was observed; (3) The points where the superior epigastric artery gets through the rectus abdominis muscle were located.

RESULTS

( The average distance between left internal mammary artery to the sternum midline is from 1. 66 cm (0. 62-2. 39 cm ) to 2.34 cm (0.69-3.36 cm) at the level from 4th to 6th intercostal space. The average distance between right internal mammary artery to the sternum midline is from 1.55 cm(0. 66-2. 29 cm) to 2.29 cm(0. 73-3. 67 cm) at the level from 4th to 6th intercostal space; ) The number of branches is the most at the level of 6th intercostal space; (3) There are 235 branches in the superior epigastric artery.

CONCLUSIONS

This imaging study of internal mammary artery explores the feasibility of transferring pedicled transverse rectus abdominals myocataneous flap for breast reconstruction. It has important significance in the breast reconstruction using TRAM flap with lengthened pedicle.

The rectus abdominis musculoperitoneal (RAMP) flap for the reconstruction of complicated pharyngoesophageal defects

In the advanced stage of hypopharyngeal cancer, extensive resection may sometimes leave both the cervical soft tissue and pharyngoesophageal defects that must be reconstructed at the same time. In this study, a new reconstructive method using the rectus abdominis musculoperitoneal flap is described. Three patients underwent pharyngoesophageal reconstruction by this method. Complete survival of the flaps was seen in all patients, but one patient developed a fistula due to rapid local recurrence of the tumour. We believe that the rectus abdominis musculoperitoneal flap can be an alternative choice for reconstruction of pharyngoesophageal defect, especially when there is a large area of cervical soft tissue defect at the same time.