Lesley Wong

Surgical management of groin lymphatic complications after arterial bypass surgery.

BACKGROUND The authors undertook a retrospective study to define the incidence of groin wound lymphatic complications at their institution and to review their experience with treatment of the complications. METHODS Operating room records and patient databases of the two primary vascular surgeons at an academic teaching institution were reviewed retrospectively. Groin lymphatic complications were diagnosed by clinical presentation and confirmed with noninvasive imaging. Surgical management included percutaneous methods, ligation of leaking lymphatics, excision, and/or muscle flap coverage. RESULTS From June of 1989 to June of 2002, 538 patients had arterial revascularization procedures involving the groin. Twenty-seven patients with groin wound lymphatic complications were identified; seven of them had bilateral complications, for a total of 34 complication sites. Common comorbidities included hypertension, coronary artery disease, chronic renal insufficiency, and tobacco use. The majority (85 percent) had artificial material in the bypass graft, and 10 patients had undergone a previous operation at the same site. The mean time to identification of groin lymphatic complications after vascular surgery was 14 days. Common presentations included swelling (n = 16), drainage (n = 13), erythema (n = 4), and leg edema (n = 1). At presentation, 17 patients (63 percent) were receiving antibiotics and 21 (78 percent) were receiving anticoagulation or antiplatelet therapy. Of the 34 complication sites, 12 were managed with drainage or excision and 22 with muscle flap surgery, 10 of which failed less aggressive therapy. Muscle flaps included the gracilis (n = 19), sartorius (n = 1), rectus abdominis (n = 1), and rectus femoris muscles (n = 1). Operative cultures were positive in 23 of the 34 groin lymphatic complication sites. A biopsy specimen of a healed gracilis flap obtained at 1 year demonstrated notable lymphatic channels, possibly supporting theories that rotated muscle becomes a lymphatic conduit. CONCLUSIONS The authors found that muscle flap surgery provides single-intervention therapy for successful resolution of lymphoceles, with a low complication rate and fairly rapid recovery in a high-risk patient population. Flaps also salvage cases that have failed conservative therapy and provide hardy coverage for a wound bed that is often infected.

The effect of rigid fixation on growth of the neurocranium

The effects on skull growth of plating the coronal suture and frontal bone were studied in New Zealand White rabbits. Three-dimensional coordinate landmarks were digitized and analyzed to determine the differences in form between operated and unoperated animals using Euclidian distance matrix analysis. This method compares sets of interlandmark distances in three dimensions and was used to demonstrate changes induced by plating. We interpret these changes in morphology to be the result of differences in growth between the operated and unoperated groups. Periosteal elevation alone (n= 6) resulted in a minimal local growth increase. Coronal suture plating (n= 8) resulted in local growth restriction with contralateral and adjacent size increases. Frontal bone plating (n= 6) without crossing a suture line also resulted in local growth restriction and adjacent bone size increases. The timing of intervention in relation to the completion of bone growth may explain the magnitude of clinically apparent effects. Changes in bones adjacent to those directly manipulated may be an attempt to maintain a normal skull volume.

Outcome of aspirin use during excision of cutaneous lesions.

The perioperative course of 253 patients undergoing excision of cutaneous and subcutaneous lesions by the same surgeon was evaluated, comparing patients using aspirin and those not using aspirin. Intraoperative methods of obtaining hemostasis and the incidence of postoperative complications were evaluated. Suture ligatures were used more frequently in the group using aspirin, but there was no statistical difference in the use of electrocautery. There was also no difference in the incidence of wound dehiscence, erythema, or hematoma. The outcome of excision of cutaneous and subcutaneous lesions under local anesthesia is not affected by patients using aspirin.

Fixation of the craniofacial skeleton with butyl-2-cyanoacrylate and its effects on histotoxicity and healing

&NA; Butyl‐2‐cyanoacrylate is an easily applied, biocompatible, bioresorbable polymer glue that provides an alternative to conventional rigid fixation techniques. Our aim was to determine if cyanoacrylate fixation of the bone flap in a rabbit craniotomy model provides the healing and strength afforded by plate and screw fixation. We also investigated the inflammatory responses of adjacent tissues including the scalp, cranium, and brain. A unilateral parietal bone flap was elevated in 33 adult New Zealand rabbits. The bone was fixed in position with cyanoacrylate (n = 13), fixed with a microplate and screws (n = 14), or was replaced without fixation (sham‐control, n = 6). Normal scar formation and no residual polymer were found in scalp specimens. Neuropathologic analysis identified the presence of residual polymer on the surface of 2 of the 13 rabbit brains. Histopathologic analysis of the bone flap‐to‐skull interface revealed no difference in the degree but rather in the quality of inflammation and healing between the plate and screw and polymer fixation groups. Microdensitometric analysis of the bone gap revealed nearly equivalent bone density in the cyanoacrylate and plated groups, tending to less density in the sham group (p = 0.11 and 0.09, respectively). An additional study focusing on neurotoxicity was performed in 20 adult rabbits with 3‐week and 11‐week recovery periods and similarly found the absence of a marked inflammatory response to the polymer. In conclusion, bone healing and soft‐tissue inflammation were comparable between cyanoacrylate and plate and screw fixation groups. Although butyl‐2‐cyanoacrylate glue fixation may provide a reasonable alternative to hardware fixation, further investigations are necessary to identify its ideal utilization. (Plast. Reconstr. Surg. 102: 309, 1998.)

Intercostal Neuromas: A Treatable Cause of Postoperative Breast Surgery Pain

Patients presenting with pain after breast surgery were selected to undergo resection of intercostal neuromas. The patients had localized Tinel’s signs at one or more intercostal nerves at the lateral chest wall with radiation in the distribution of the pain. Patients also responded to diagnostic injections of local anesthetic. The patients were felt to have pain not related to breast implants and capsular contracture or intercostobrachial nerve injury. Neuromas were found in all patients meeting these requirements. Surgical resection resulted in complete pain relief. Diagnosis of this entity and consideration of surgical treatment may be underrecognized.

Giant basal cell carcinoma surgical management and reconstructive challenges.

Basal cell carcinoma is exceedingly common, but tumors >5 cm in size or giant basal cell carcinomas (GBCCs) are rare. We retrospectively review 10 GBCCs in 8 patients treated by aggressive surgical excision and reconstruction in a single operative procedure. With the exception of 1 chest lesion, all GBCCs involved the face or scalp. The 10 large defects were reconstructed with 5 free-tissue transfers, 2 pedicled musculocutaneous flaps, and 3 rotational skin flaps. There has been no evidence of local recurrence or metastasis in a mean follow-up of 29 months. Neglect has a well-established role in the presence of GBCCs, with undiagnosed preexisting medical problems also common. Surgical excision and reconstruction is the treatment of choice and can be readily accomplished in a single procedure with few complications, good oncologic control, and acceptable cosmetic results.

Infectious complications associated with the use of acellular dermal matrix in implant-based bilateral breast reconstruction.

Background: The use of acellular dermal matrix (ADM) has become a routine practice in implant-based breast reconstruction. Bilateral mastectomy is becoming more popular in cases of unilateral breast cancer. ADM has been associated with an increased incidence of complications. Methods: We identified cases of bilateral implant-based breast reconstruction over a 5-year period. Data collection included medical comorbities, details of operative management, and details of postoperative cancer treatment. Results: On univariate analysis, the use of ADM (31% vs. 7%, P = 0.018), smoking (37% vs. 13%, P = 0.045), and open wound (55% vs. 13%, P = 0.006) were significantly associated with increased risk of infection. Multivariate analysis revealed open wound as the strongest predictor of infection. Conclusions: The use of ADM is associated with an increased risk of infection in bilateral implant-based breast reconstruction. However, it does not appear to be an independent risk factor by itself.

Comparison of sterile versus nonsterile acellular dermal matrices for breast reconstruction.

BackgroundAcellular dermal matrix (ADM) has been associated with an increased incidence of complications after implant-based breast reconstruction. Recently, sterile ADM has been introduced in an attempt to minimize these complications. To analyze the impact of this product on patient outcomes, we created a database of patients undergoing implant-based breast reconstruction. MethodsPatients undergoing implant-based breast reconstruction at the University of Kentucky Medical Center from January 1, 2011, to December 31, 2011 were identified. A database of patient characteristics and outcomes was created. Outcomes investigated included mastectomy flap necrosis, dehiscence, infection, red breast, capsular contracture, hematoma, and seroma. Statistical analysis was performed. ResultsFifty-eight patients underwent breast reconstruction with implants or tissue expanders. Of the 58 patients, 9 had the sterile form of ADM placed, 25 had the original aseptic but not sterile ADM, and 24 were not reconstructed with ADM. The most frequent complication noted was seroma, occurring in 6/9 patients with sterile ADM as compared to 2/25 with the aseptic ADM. This was statistically significant (P = 0.003). ConclusionsThe use of sterile ADM is associated with a statistically significant increase in seroma formation. The etiology of this increased incidence remains unknown, but it correlates with the introduction of the sterile form of ADM at our institution. A different preparation or sterilization process, or some other variable as yet unknown, may be responsible. Further studies comparing the different forms of ADM in an animal model may serve to clarify this issue.

The specialized wound care center: a 7-year experience at a tertiary care hospital.

Multidisciplinary wound care centers have proliferated as a result of an increasing need for care of nonhealing wounds. Information regarding types of wounds treated, length of treatment, compliance with treatment, and rates of healing was collected from a tertiary care hospital-based wound center over a 7-year period. Venous stasis ulcers were the most common type of wound treated (21%) and were also the most likely to heal. Pressure ulcers (20%), diabetic neuropathic ulcers (14%), ischemic ulcers (6%), and postsurgical wounds (6%) comprised the remainder of wounds treated. The success of treating wounds varied greatly with the wounds etiology. Despite the chronic nature of these wounds, most patients did not become long-term patients of the wound center. This study provides baseline outcome measures, which can serve as the basis for the comparison of treatment protocols and the development of prospective clinical trials.

Drug-induced linear immunoglobulin A bullous disease that clinically mimics toxic epidermal necrolysis.

Drug-induced linear immunoglobulin A bullous disease is a subepidermal blistering disorder that most commonly occurs after exposure to vancomycin. It can clinically mimic toxic epidermolytic necrolysis. We describe an 87-year-old white woman in whom linear immunoglobulin A bullous disease developed while she was taking vancomycin and phenytoin. A few days after the linear immunoglobulin A bullous disease developed, both medications were discontinued. No new bullae developed, and the eruption completely resolved within 2 weeks. The patient was treated with only topical therapy.