To investigate the clinical efficacy of one-stage repairing the wounds after excision of soft tissue malignant tumor in lower limb with deep inferior epigastric perforator (DIEP) flaps.

From August, 2016 to July, 2018, 11 patients(8 males and 3 females; aged 35-76 years) with the soft tissue defects in the lower limb underwent immediate reconstructive operations with DIEP flap after their tumor resection. The defects ranged in area from 11 cm×7 cm to 25 cm×10 cm after extended resection, including 5 cases of bone exposure. The DIEP flap area ranged from 11 cm×8 cm to 26 cm×18 cm. Among them, 9 cases were treated with free transplantation and 2 cases with pedicle transplantation. The donor sites were closed directly. The patients’ limb function, tumor recurrence and the healing of surgical incision had been followed-up.

Eleven flaps survived and the donor sites healed directly. One flap had skin pigmentation due to postoperative vascular crisis, and the other flaps had satisfied texture and appearance. All patients were followed-up from 6 to 30 months. The lower limb movement was normal. All the donor sites had a good healing with no pain and abdominal complications. No tumor recurrence was observed during the followed-up period.

DIEP flap have many advantages, such as large cutting area, which is suitable for large-area wound repair after extended excision of soft tissue malignant tumor in lower limb. At the same time, the perforator vessel is constant and the caliber are thick, also the donor area is concealed and can be sutured directly. This kind of the technique for reconstruction of lower limb soft tissue defects after malignant tumor resection is well acceptable.

Deep inferior epigastric perforator flap; Lower limb; Soft tissue malignant tumor; Wounds after excision; Repair