Erez Dayan

Reverse lymphatic mapping: a new technique for maximizing safety in vascularized lymph node transfer.

Background: The authors introduce the technique of reverse lymphatic mapping for vascularized lymph node transfer. This physiologic technique allows one to identify which lymph nodes drain the trunk as opposed to the extremity, to minimize the risk of iatrogenic lymphedema. Methods: A prospective study of patients undergoing vascularized lymph node transfer using the reverse lymphatic mapping technique was conducted. Patients received technetium injections in the first and second webspaces of the foot and intradermal indocyanine green injections in the lower abdomen. Lymphatic vessels were traced to the lymph nodes draining the lower abdomen that were harvested; a gamma probe was used to localize lymph nodes draining the lower extremity, which were avoided. In cases of vascularized axillary lymph node transfer, technetium was injected into the hand and indocyanine green was injected into the back and lateral chest. Ten-second counts were recorded of the lymph node flap and the sentinel node draining the extremity for comparison. Results: Thirty-five patients underwent vascularized lymph node transfer (19 groin and 16 axillary lymph node transfers) guided by reverse lymphatic mapping. Follow-up time was 1 to 30 months. Mean 10-second count using the gamma probe for all lymph node flaps was 88.6 (SD, 123; median, 39); mean 10-second count of extremity sentinel nodes was 2462 (SD, 2115; median, 2000). On average, 10-second signal strength of the lymph node flap was 6.0 percent that of the extremity sentinel node. Conclusion: Reverse lymphatic mapping guides vascularized lymph node flap harvest based on physiologic drainage patterns of the trunk and limb that may minimize the risk of iatrogenic lymphedema. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.

The use of magnetic resonance angiography in vascularized groin lymph node transfer: an anatomic study.

Vascularized groin lymph node transfer (VGLNT) has been successfully used to treat lymphedema. However, lack of familiarity with the inguinal node anatomy and concerns regarding donor site morbidity have limited its widespread use. The purpose of this study was to use magnetic resonance angiography (MRA) to clarify the inguinal anatomy and provide a reliable method for identifying the location of the superficial transverse inguinal lymph nodes. In this study MRA was used to evaluate the superficial inguinal lymph nodes in 117 patients. Coordinates of lymph nodes were plotted relative to an axis from the anterior superior iliac spine (ASIS) to the pubic tubercle (PT). The nodes were also plotted relative to the superficial circumflex iliac vein (SCIV) and superficial inferior epigastric vein (SIEV). A total of 1,938 lymph nodes were identified. These lymph nodes were concentrated on one-third the distance from the PT toward the ASIS and 3 cm perpendicularly below this line. About 67% of the superficial inguinal nodes were located within the bifurcation of the SIEV and SCIV. The results from this study provide useful guidelines for locating lymph nodes targeted for VGLNT.

Comparison of irradiated versus nonirradiated DIEP flaps in patients undergoing immediate bilateral DIEP reconstruction with unilateral postmastectomy radiation therapy (PMRT).

IntroductionPatients with node positive or locally advanced breast cancer desiring deep inferior epigastric perforator (DIEP) flap reconstruction frequently require postmastectomy radiation therapy (PMRT). To avoid the deleterious effects of PMRT, surgeons will often delay reconstruction until after PMRT is complete. Drawbacks to this approach include additional surgery, recuperation, cost, and an extended reconstructive process. Even if a tissue expander is used to preserve the skin envelope during irradiation, the post-PMRT breast pocket is often distorted or constricted necessitating some skin replacement, resulting in a compromised aesthetic outcome. Therefore, a systematic approach to mitigate the deleterious effects of PMRT was developed, and primary DIEP flap reconstruction was offered to patients requiring PMRT. This study evaluates the outcome of this approach in a cohort of patients undergoing immediate bilateral DIEP flap reconstruction with unilateral PMRT, allowing comparison between irradiated and nonirradiated flaps. MethodsOne hundred twenty-five patients who underwent immediate DIEP reconstruction between 2009 and 2011 were identified. Eleven consecutive patients had bilateral DIEP reconstructions by a single surgeon and received unilateral PMRT. Preoperative, intraoperative, and postoperative steps were taken in all patients to ensure flap vascularity, prevent uncontrolled contracture, and limit radiation damage to the breast mound. Results were documented photographically and the irradiated and nonirradiated breasts were compared. The complication rates, incidence of clinically significant fat necrosis, and need for reoperation were examined. ResultsMedian follow-up was 18 months (range, 8–21 months). Complications were minor and did not require readmission to the hospital or reoperation. There was no incidence of clinically significant fat necrosis in either the irradiated or nonirradiated DIEP flaps. Four operative revisions for breast symmetry were required in 3 of 11 patients. Aesthetic outcomes were deemed satisfactory in all patients. ConclusionsPrimary reconstruction with DIEP flaps can be performed successfully in patients who require PMRT if steps are taken to ensure flap vascularity, minimize fibrosis, optimize contour, and modulate radiation dosing.

Factors influencing incidence and type of postmastectomy breast reconstruction in an urban multidisciplinary cancer center.

Background: On January 1, 2011, New York State amended the Public Health Law to ensure that patients receive “information and access to breast reconstruction surgery.” The purposes of this study were to investigate the early impact of this legislation on reconstruction rates and to evaluate the influence of patient variables versus physician variables on the incidence and type of breast reconstruction performed. Methods: A retrospective study was conducted on all patients who underwent mastectomy between January 1, 2010, and December 31, 2011. Reconstruction rates were analyzed in relation to timing of legislation, breast surgeon variables, plastic surgeon faculty status, type of reconstruction, and patient variables. Results: Two hundred fifty-eight patients met inclusion criteria. The overall reconstruction rate was 56.59 percent. There was no statistically significant increase in reconstruction rate after the 2011 legislation (OR, 0.45; p = 0.057). Patients whose breast surgeon was female were more likely to undergo reconstruction (OR, 5.17; p = 0.001). Patients who were Asian (OR, 0.22; p = 0.002), older than 60 years (OR, 0.09; p = 0.001), or had stage 3 and 4 cancer (OR, 0.04; p = 0.03) were less likely to undergo reconstruction. Patients reconstructed by a hospital-employed plastic surgeon were significantly more likely to undergo autologous versus implant reconstruction (OR, 6.85; p = 0.001) and to undergo microsurgical versus nonmicrosurgical autologous reconstruction (78.2 percent versus 0 percent; p = 0.001). Conclusions: Breast surgeon sex and plastic surgeon faculty status were the factors that most affected the rate and type of reconstruction, respectively. Legislation mandating the discussion of breast reconstruction options had no impact on reconstruction rate. CLINICAL QUESTION/LEVEL OF EVIDENCE: Risk, II.

Craniofacial reconstruction using patient-specific implants polyether ether ketone with computer-assisted planning.

AbstractReconstruction of bony craniofacial defects requires precise understanding of the anatomic relationships. The ideal reconstructive technique should be fast as well as economical, with minimal donor-site morbidity, and provide a lasting and aesthetically pleasing result. There are some circumstances in which a patients own tissue is not sufficient to reconstruct defects. The development of sophisticated software has facilitated the manufacturing of patient-specific implants (PSIs). The aim of this study was to analyze the utility of polyether ether ketone (PEEK) PSIs for craniofacial reconstruction.We performed a retrospective chart review from July 2009 to July 2013 in patients who underwent craniofacial reconstruction using PEEK-PSIs using a virtual process based on computer-aided design and computer-aided manufacturing.A total of 6 patients were identified. The mean age was 46 years (16–68 y). Operative indications included cancer (n = 4), congenital deformities (n = 1), and infection (n = 1). The mean surgical time was 3.7 hours and the mean hospital stay was 1.5 days. The mean surface area of the defect was 93.4 ± 43.26 cm2, the mean implant cost was

Heterotopic vascularized lymph node transfer to the medial calf without a skin paddle for restoration of lymphatic function: Proof of concept

8493 ± 

Modern Perforator Flap Imaging with High-Resolution Blood Pool MR Angiography

837.95, and the mean time required to manufacture the implants was 2 weeks. No major or minor complications were seen during the 4-year follow-up.We found PEEK implants to be useful in the reconstruction of complex calvarial defects, demonstrating a low complication rate, good outcomes, and high patient satisfaction in this small series of patients. Polyether ether ketone implants show promising potential and warrant further study to better establish the role of this technology in cranial reconstruction.

Aesthetic scrotal reconstruction following extensive Fournier's gangrene using bilateral island pedicled sensate anterolateral thigh flaps: A case report.

The use of heterotopic vascularized lymph node transfer (HVLNT) for the treatment of lower extremity lymphedema is still evolving. Current techniques, either place the lymph nodes in the thigh without a skin paddle or at the ankle requiring an unsightly and often bulky skin paddle for closure. We explored the feasibility of doing a below‐knee transfer without a skin paddle using the medial sural vessels as recipient vessels and report our experience in 21 patients.

Bilateral breast reconstruction from a single hemiabdomen using angiosome-based flap design.

Advances in microsurgical techniques have improved autologous reconstructions by providing new donor site options while decreasing donor site morbidity. Various preoperative imaging modalities have been studied to assess the relevant vascular anatomic structures, with magnetic resonance (MR) angiography traditionally lagging behind computed tomography (CT) with respect to spatial resolution. Blood pool MR angiography with gadofosveset trisodium, a gadolinium-based contrast agent with extended intravascular retention, has allowed longer multiplanar acquisitions with resultant voxel sizes similar to or smaller than those of CT and with improved signal-to-noise ratio and soft-tissue contrast while maintaining the ability to depict flow with time-resolved imaging. The resultant vascular detail enables precise evaluation of the relevant vascular anatomic structures, including the vessel course, size, and branching pattern, as well as the venous arborization pattern. In addition, any architectural distortion, vessel alteration, or injury from prior surgery can be depicted. The reporting radiologist should be aware of pertinent and incidental findings relevant to the planned surgery and the patients disease so that he or she can assist the microsurgeon in flap design as a member of the multidisciplinary team. Given the lack of ionizing radiation exposure in patients who often have an elevated body mass index, high-spatial-resolution blood pool MR angiography has become the imaging reference standard for the preoperative assessment of perforator flap vascular and soft-tissue morphology in our practice.

Use of Distal Medial Sural Vessels as Recipient Vessels in Free Tissue Transfer

Achieving an aesthetic appearance of the scrotum after extensive Fourniers gangrene is a reconstructive challenge. Testicular coverage is often prioritized over scrotal cosmesis due to the comorbidities typically seen in this patient population. We describe our treatment of a young, healthy male with extensive Fourniers gangrene, with loss of the scrotum. Bilateral neurotized anterolateral thigh flaps were used to achieve a sensate and aesthetically acceptable result.