Autologous breast reconstruction with perforators has been previously avoided in tissues that have undergone liposuction. We present a case series and literature review of breast reconstruction with deep inferior epigastric perforator (DIEP) flaps after abdominal wall liposuction. An MEDLINE search was performed for all relevant articles describing breast reconstruction with DIEP flap technique following the abdominal wall liposuction. Key search words used included “DIEP”, “DIEAP”, “deep inferior epigastric perforator”, “liposuction” and “free flap”. All published data on the topic from 1965 to December 2014 were reviewed. Articles were assessed for reports of clinical cases, complications, age, liposuction amount, time since liposuction and number of perforators for comparison. We have also presented 2 patients who underwent a DIEP procedure with a previous history of liposuction. Eight cases of autologous breast reconstruction using a DIEP flap after liposuction were identified in the literature in addition to the presented cases. The preoperative and postoperative course was uneventful in all cases except one patient who had a mild cellulitis managed with antibiotics and a second patient with a drainable hematoma. The average age was 52 years ± 6.4 years old, one perforator was used in all cases except one where 2 were used, and the average amount of total liposuction was 1,084 mL. No major complications were reported. Previous liposuction is not an absolute contraindication for free-flap breast reconstruction. Preoperative management should include evaluation of suitable perforators by duplex ultrasound or computed tomography angiography. Larger case series are needed to better understand the safety of perforator flaps after liposuction.
Keywords: Breast reconstruction, deep inferior epigastric perforator, flap, liposuction
Over the past decade, there has been an increase in breast reconstruction among women who have previously had liposuction. Raising a perforator flap is generally contraindicated after abdominal liposuction due to possible damage of the perforators that supply the flap’s vascularity. Numerous articles have already demonstrated successful breast reconstruction with a transverse rectus abdominis myocutaneous flap after liposuction; however, there is a paucity of data on breast reconstruction using a deep inferior epigastric perforator (DIEP) flap after liposuction.[3-6] Our experience of breast reconstruction with DIEP flap after abdominal wall liposuction will be demonstrated in addition to a literature review.
An MEDLINE search was performed for all relevant articles describing the breast reconstruction with DIEP flap technique following abdominal wall liposuction. This study includes all published data on the topic from 1965 to December 2014. The PubMed database of the National Center for Biotechnology Information, National Library of Medicine (Bethesda, Maryland, USA), was used to collect reports using the keywords “DIEP”, “DIEAP”, “deep inferior epigastric perforator”, “liposuction” and “free flap”. All articles were reviewed for reports of clinical cases including complications, age, liposuction amount, time since liposuction and the number of perforators for comparison.
A total of 8 cases of autologous breast reconstruction using a DIEP flap after liposuction were identified in the literature review in addition to the 2 cases we present here. A study by De Frene et al. describes five consecutive cases, and Jandali et al. reports one case. In addition, Farid et al. reported 2 cases involving DIEP flap breast reconstruction after multiple liposuction procedures. The results of these studies including our cases are summarized in Table 1. The preoperative and postoperative course for all prior liposuction cases was uneventful except for our 2 patients: one who had a mild cellulitis that resolved with appropriate therapy without any compromise of the flap and another who experienced a hematoma which was subsequently drained. The average patient age was 52.2 years ± 6.4 years old, and one perforator was used in all cases except one report where two were used. Of the reported cases, the average amount of liposuction collected was 1,084 mL. Two minor complications out of the total 10 cases were a mild cellulitis and a postoperative stable hematoma. No major complications were reported.
Table 1: Summary of studies performing DIEP reconstruction in patients who have had previous liposuctionClick here to view
A 50-year-old, nonsmoker, female underwent a left sided mastectomy for invasive ductal carcinoma. Conventional abdominal liposuction was performed 5 years before the original diagnosis of breast cancer. Three years after the mastectomy, the patient underwent autologous breast reconstruction with a DIEP flap. The patient was evaluated preoperatively for suitable perforators by computed tomography (CT) angiography and duplex ultrasound. Examination revealed appropriate perforator vessels and extensive fibrosis throughout the subcutaneous tissue caused by the previous liposuction. The patient underwent delayed unilateral breast reconstruction with a free DIEP flap. The postoperative course was complicated by a mild cellulitis that was successfully treated with antibiotics and no damage resulted to the flap [Figure 1].
Figure 1: Case 1, patient before (a) and after (b), deep inferior epigastric perforator procedure with evidence of mild cellulitis surrounding the flap; (c) patient at 2 years follow-up after additional nipple reconstructive produces and extensive weight lossClick here to view
A 59-year-old, smoker, female with breast cancer underwent a right mastectomy in 1998 followed by implant-based reconstruction the same year. She later underwent radiation therapy and subsequently developed severe capsular contracture [Figure 2]. In 2012, she underwent right breast capsulectomy and reconstruction with DIEP flap. Eighteen years earlier, the patient had undergone conventional abdominal liposuction. The patient was evaluated preoperatively for suitable perforators by CT angiography and duplex ultrasound. Examination revealed appropriate perforator vessels. Three days following the DIEP flap procedure the patient developed a hematoma that was evacuated and the patient had a stable postoperative course without any flap compromise.
Figure 2: Case 2, (a) Patient prior to breast reconstruction with severe capsular contracture; (b) after DIEP flap procedure. DIEP: Deep inferior epigastric perforatorClick here to view
Previous literature suggests that harvesting perforator flaps from liposuctioned donor sites may not necessarily be a contraindication to free-flap breast reconstruction.[5,7] The largest reported series of DIEP flaps after liposuction was published by De Frene et al. with five successful cases of breast reconstruction. The DIEP flap, introduced by Itoh and Arai and Koshima and Soeda and popularized by Allen and Treece, Blondeel and Boeckx, and Blondeel has been described as the most appropriate way to reconstruct a breast to minimize donor morbidity.[6,14,15] The effect of liposuction on a free flap donor site months or years before flap transfer remains to be clarified.
Previous literature has shown conflicting evidence regarding the effect of liposuction on donor tissue, specifically, perforator vessels. Teimourian and Kroll reported that neurovascular bundles remain intact following conventional liposuction on examination with subcutaneous endoscopy. However, a study by Ozcan et al. demonstrated that flap necrosis is directly related to the number of suction passes of a cannula accompanied by a vacuum. İnceoğlu et al. reported a 57.8% decrease in the number of perforators in abdominal subcutaneous tissue 3 months after liposuction using duplex ultrasound. Despite the reported decrease in the number of perforators, Ribuffo et al. demonstrated that perforator arteries regenerate up to 40% of their original diameter after liposuction. This evidence suggests that the liposuction technique may influence the degree to which perforator vessels are damaged and the outcome of the flap.
It should be possible to minimize patient complications associated with free-flap breast reconstruction after liposuction through modification of the initial liposuction procedure and decreasing trauma to perforators during liposuction. The variability in a number of perforators after liposuction is likely related to factors such as the cannula used, the number of passes, strength of suction and operator force and technique. An ultrasound-assisted liposuction technique described by Zocchi showed less damage to neurovascular structures. However, these findings were later opposed by a study which compared conventional versus ultrasonic liposuction. Salgarello et al. suggest employing a superficial subdermal liposuction technique to maintain perforator viability. Overall, a refined technique or protocol for liposuction in future free flap donor areas may improve patient outcome.
There are inherent difficulties in choosing when to use a technique to maximize perforator viability. For example, it is not possible to predict which patients will require autologous breast reconstruction with a free flap at the time of abdominal liposuction. Furthermore, patients may have breast reconstruction with a different surgeon than the one who performed the liposuction, creating a challenge for the surgeon to predict the adequacy of perforators in the future donor site. As noted by Wes et al., breast reconstructive in the context of previous abdominal surgery therefore requires a thorough preoperative evaluation to prevent flap morbidity. Specifically in the context of liposuction, duplex ultrasound and CT angiography will help identify perforator viability to reduce procedural complications. The use of color duplex examination as a preoperative guide is reported to have a true-positive rate of 96.2% and a positive predictive value of 100% in the hands of an experienced sonographer. The use of CT angiography as a preoperative methodology was reinforced by both Bank et al. and Rozen et al. to confirm perforator presence and communication for facilitating DIEP flap paddle design in postabdominal procedure patients. Rozen et al. highlighted the benefit of preoperative CT flap design as a method for identifying perforators resulted from neovascularization offering additional possibilities for DIEP harvesting. Other techniques such as flap perfusion mapping may be useful when the surgeon needs to know the integrity of vessels that are too small to image with standard angiographic techniques preoperatively. In addition, Masia et al. described multidetector-row CT, an imaging modality that allows for interpretation of a virtual anatomic dissection in three dimensions with very high spatial resolution. Intraoperative laser angiography using the SPY system has been shown to be beneficial for assessing tissue perfusion during flap elevation. Application of SPY laser angiography decreases the incidence skip necrosis in postmastectomy reconstruction and the rate of reoperation due to of perfusion related complications. Finally, Farid et al. prefer MR angiography to CT angiography to avoid reliance on intravenous contrast and to reduce patient exposure to radiation. Appropriate application of these techniques for perforator evaluation including CT, ultrasound, or perfusion mapping may improve the outcome of patients undergoing DIEP after abdominal liposuction.
We have demonstrated two cases, in addition to the previously reported literature that suggest previous conventional liposuction is not an absolute contraindication for free-flap breast reconstruction. Preoperative management of the patient should include thorough evaluation of suitable perforators by duplex ultrasound or CT angiography. In patients with history of liposuction to the lower abdomen, a classification system would be of clinical utility in guiding the selection of the ideal technique for breast reconstruction. Larger case series are needed to better understand the safety of perforator flaps after liposuction.
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