Reconstruction of Broad Lower Lip Defects Using Karapandzic-Type Flaps.

BACKGROUND: Reconstruction of lower lip defects is challenging because of the functional and aesthetic demands of the lower face. We review the functional and aesthetic outcomes of the Karapandzic-type flaps for reconstructing lower lip defects. METHODS: A retrospective review of patients who underwent repair using Karapandzic-type flaps. RESULTS: Fifty patients with lower lip defects ranging from 20% to 95% (mean 59.2% ± 20%) were included. Eighteen patients (36%) were repaired using a bilateral flap, and 32 (64%) were reconstructed using a unilateral flap design. All patients had preservation of oral competency and a satisfactory aesthetic result. No patient complained of microstomia. A complication rate of 8% was noted ( n = 4) with postoperative wound infection and small areas of dehiscence. There was no statistically significant difference in complication rates in patients older than 75 years, in patients with a history of head/neck radiation, or in defects greater than 70% of lower lip breadth. CONCLUSION: Karapandzic-type flaps are versatile and reliable for the reconstruction of a broad range of lower lip defects. This one-stage procedure can produce superior functional and aesthetic results as compared with other local and distant flaps with minimal risk of functional microstomia.

Cutaneous Reconstruction of the Nasal Distal Third: Alternative Local Flaps for a Complex Region.

Small-to-medium cutaneous defects of the distal nose pose a significant challenge to reconstructive surgeons, and commonly described reconstructive techniques have their limitations. As the skin of this region is characteristically rigid and sebaceous, care must be taken to avoid introducing unfavorable tension vectors that can result in functional or anatomic distortion of the nasal free margins. With this in mind, the authors discuss 3 alternative reconstructive options, the East-West, nasalis sling, and trilobed flaps, which have wide utility in the repair of distal nasal cutaneous defects and can result in excellent cosmesis. The indications, surgical technique, and limitations of each are discussed in detail, and are compared with several of the more commonly described options in the context of distal nasal reconstruction.

Evidence-Based Clinical Practice Guideline: Reconstruction after Skin Cancer Resection.

SUMMARY: A multi-disciplinary work group involving stakeholders from various backgrounds and societies was convened to develop guidelines for the management of reconstruction after skin cancer resection. The goal was to identify areas of common ground and provide evidence-based recommendations to improve patient care. Given the heterogeneity of reconstructive techniques and clinical scenarios, investigation centered around common elements in the process. In some cases, a distinction was made between treatment options in the office-based setting as opposed to those in the facility setting. A systematic literature review was performed, and an established appraisal process was used to rate the quality of relevant scientific research (Grading of Recommendations Assessment, Development, and Evaluation methodology). Final recommendations are related to concepts concerning the timing of reconstruction, management of anticoagulation, use of antibiotics, methods of pain control, and follow-up assessment. At times, there was insufficient evidence to make high-level recommendations. The literature analysis highlights the need for additional methodologically robust studies in this area, to help guide clinical practice.

Evidence-based clinical practice guideline: Reconstruction after skin cancer resection.

A multi-disciplinary work group involving stakeholders from various backgrounds and societies was convened to develop guidelines for the management of reconstruction after skin cancer resection. The goal was to identify areas of common ground and provide evidence-based recommendations to improve patient care. Given the heterogeneity of reconstructive techniques and clinical scenarios, investigation centered around common elements in the process. In some cases, a distinction was made between treatment options in the office-based setting as opposed to those in the facility setting. A systematic literature review was performed, and an established appraisal process was used to rate the quality of relevant scientific research (Grading of Recommendations Assessment, Development, and Evaluation methodology). Final recommendations are related to concepts concerning the timing of reconstruction, management of anticoagulation, use of antibiotics, methods of pain control, and follow-up assessment. At times, there was insufficient evidence to make high-level recommendations. The literature analysis highlights the need for additional methodologically robust studies in this area, to help guide clinical practice.

ENTPD1 (CD39) Expression Inhibits UVR-Induced DNA Damage Repair through Purinergic Signaling and Is Associated with Metastasis in Human Cutaneous Squamous Cell Carcinoma.

UVR and immunosuppression are major risk factors for cutaneous squamous cell carcinoma (cSCC). Regulatory T cells promote cSCC carcinogenesis, and in other solid tumors, infiltrating regulatory T cells and CD8+ T cells express ectonucleoside triphosphate diphosphohydrolase 1 (ENTPD1) (also known as CD39), an ectoenzyme that catalyzes the rate-limiting step in converting extracellular adenosine triphosphate (ATP) to extracellular adenosine (ADO). We previously showed that extracellular purine nucleotides influence DNA damage repair. In this study, we investigate whether DNA damage repair is modulated through purinergic signaling in cSCC. We found increased ENTPD1 expression on T cells within cSCCs when compared with the expression on T cells from blood or nonlesional skin, and accordingly, concentrations of derivative extracellular adenosine diphosphate (ADP), adenosine monophosphate (AMP), and ADO are increased in tumors compared with those in normal skin. Importantly, ENTPD1 expression is significantly higher in human cSCCs that metastasize than in those that are nonmetastatic. We also identify in a mouse model that ENTPD1 expression is induced by UVR in an IL-27-dependent manner. Finally, increased extracellular ADO is shown to downregulate the expression of NAP1L2, a nucleosome assembly protein we show to be important for DNA damage repair secondary to UVR. Together, these data suggest a role for ENTPD1 expression on skin-resident T cells to regulate DNA damage repair through purinergic signaling to promote skin carcinogenesis and metastasis.

Evidence-Based Clinical Practice Guideline: Reconstruction after Skin Cancer Resection.

SUMMARY: A multi-disciplinary work group involving stakeholders from various backgrounds and societies was convened to develop guidelines for the management of reconstruction after skin cancer resection. The goal was to identify areas of common ground and provide evidence-based recommendations to improve patient care. Given the heterogeneity of reconstructive techniques and clinical scenarios, investigation centered around common elements in the process. In some cases, a distinction was made between treatment options in the office-based setting as opposed to those in the facility setting. A systematic literature review was performed, and an established appraisal process was used to rate the quality of relevant scientific research (Grading of Recommendations Assessment, Development, and Evaluation methodology). Final recommendations are related to concepts concerning the timing of reconstruction, management of anticoagulation, use of antibiotics, methods of pain control, and follow-up assessment. At times, there was insufficient evidence to make high-level recommendations. The literature analysis highlights the need for additional methodologically robust studies in this area, to help guide clinical practice.

Expertise in Head and Neck Cutaneous Reconstructive Surgery.

BACKGROUND: The management of skin cancers has evolved with the development of Mohs micrographic surgery and a greater emphasis on surgical training within dermatology. It is unclear whether these changes have translated into innovations and contributions to the reconstructive literature. OBJECTIVE: To assess contributions from each medical specialty to the cutaneous head and neck oncologic reconstructive literature. METHODS: The authors conducted a systematic review of the head and neck reconstructive literature from 2000 through 2015 based on a priori search terms relating to suture technique, linear closure, advancement, rotation, transposition and interpolation flaps, and identified the specialty of the senior authors. RESULTS: The authors identified 74,871 articles, of which 1,319 were relevant. Under suture technique articles, the senior authors were primarily dermatologists (58.2%) and plastic surgeons (20.3%). Under linear closure, the authors were dermatologists (48.1%), plastic surgeons (22.2%), and otolaryngologists (20.4%). Under advancement and rotation flaps, the senior authors were plastic surgeons (40.5%, 38.9%), dermatologists (38.1%, 34.2%), and otolaryngologists (14.4%, 21.6%). Under transposition and interpolation flaps, the senior authors were plastic surgeons (47.3%, 39.4%), dermatologists (32.3%, 27.0%), and otolaryngologists (15.3%, 23.4%). CONCLUSION: The primary specialties contributing to the cutaneous head and neck reconstructive literature are plastic surgery, dermatology, and otolaryngology.

Tunneled and transposed island flaps in facial reconstructive surgery.

BACKGROUND: Surgical wounds on the central face present reconstructive challenges given the aesthetic prominence of these visually important areas and a general lack of local tissue availability. MATERIALS AND METHODS: Illustrative case examples demonstrate the potential clinical utility of nontraditional island flaps that are tunneled or transposed into operative defects. RESULTS: Aesthetically successful reconstruction of difficult facial wounds was accomplished with island flaps that used less traditional operative designs. CONCLUSION: When designed and executed properly, island flaps offer unrivaled opportunities to reconstruct the face with maximal preservation of central facial symmetry.

Reconstruction of scalp wounds with exposed calvarium using a local flap and a split-thickness skin graft: case series of 20 patients.

OBJECTIVES: To describe the design, execution, outcomes, and advantages of a combined flap and split-thickness skin graft reconstructive technique for the repair of wounds of the scalp with exposed bone after Mohs micrographic surgery. MATERIALS AND METHODS: An analysis of the combined flap and graft technique of 20 scalp defects ranging in size from 6.25 to 37.6 cm(2) is provided. Surgical defects and patient characteristics are described. Follow-up information is reviewed, and complications and final aesthetic results are reported. RESULTS: Twenty patients with 20 tumors on the scalp (16 squamous cell carcinoma, 2 basal cell carcinoma, 1 Merkel cell carcinoma, and 1 malignant fibrous histiocytoma) were treated using Mohs micrographic surgery. A combined flap and graft technique was successfully employed with good aesthetic outcomes in all 20 patients with broad scalp defects. One postoperative complication of approximately 20% skin graft necrosis was noted. One methicillin-resistant Staphylococcus aureus postoperative wound infection occurred but resolved without sequelae with appropriate antibiotic treatment. CONCLUSION: The described flap and graft reconstructive technique is a reproducible, one-stage procedure for the reconstruction of medium to large scalp defects with exposed bone, obviating the need for more-complicated, costly, time-consuming procedures. LIMITATIONS: Small sample size, descriptive study.

The reconstruction of two large full-thickness wounds of the upper lip with different operative techniques: when possible, a local flap repair is preferable to reconstruction with free tissue transfer.

BACKGROUND: Large full-thickness wounds of the upper lip are often referred to operating room-based surgeons for repair given the perceived difficulties in restoring upper lip form and function with simpler operative techniques. OBJECTIVE: To illustrate the functional, aesthetic, and cost differences between two techniques used to repair full-thickness wounds of the upper lip. MATERIALS AND METHODS: Two patients with difficult full-thickness wounds of the majority of the upper lip were reviewed. One patient underwent reconstruction with a composite free flap in an operating room, and one underwent repair using local tissue rearrangement using bilateral modified nasolabial flaps in an outpatient setting. RESULTS: Both patients were adequately reconstructed, but the patient repaired using local tissue rearrangement had a better aesthetic outcome and superior preservation of oral competency. In addition, the costs of this patient's reconstructive care were less than 2.4% of the costs of the care of the patient repaired using a free flap. CONCLUSION: When possible, large, full-thickness wounds of the upper lip should be repaired with local tissue rearrangement in an outpatient setting to offer patients potential improvements in functional and aesthetic outcomes while minimizing treatment costs.

Expression of cadherin/catenin cell--cell adhesion molecules in a onychomatricoma.

Onychomatricoma is a rare nail tumor with a distinctive architecture. Proximally, there are serum-filled invaginations of nail matrix epithelium into the stroma, and distally, dermal protrusions perforate the nail plate. Because other matrical tumors of follicular and odontogenic origin express nuclear beta-catenin, we examined the expression of cadherin/catenin proteins in this onychomatricoma case. The patient presented with a toenail yellow streak, and the biopsy revealed an onychomatricoma. E-cadherin and beta-catenin were at the cell membrane in the epithelial invaginations. P-cadherin was restricted to basal cells. In contrast to other matrical tumors, nuclear beta-catenin was not present. These results suggest that onychomatricoma may lack the transcriptional activating role of beta-catenin that characterizes follicular and odontogenic matrical tumors. This is the first report on the expression of cadherin/ catenin cell-cell adhesion proteins in this rare nail tumor.

High-risk cutaneous squamous cell carcinoma without palpable lymphadenopathy: is there a therapeutic role for elective neck dissection?

PURPOSE: The beneficial role of elective neck dissection (END) in the management of high-risk cutaneous squamous cell carcinoma (CSCC) of the head and neck remains unproven. Some surgical specialists suggest that END may be beneficial for patients with clinically node-negative (N0) high-risk CSCC, but there are few data to support this claim. We reviewed the available literature regarding the use of END in the management of both CSCC and head and neck SCC (HNSCC). METHODOLOGY: The available medical literature pertaining to END in both CSCC and HNSCC was reviewed using PubMed and Ovid Medline searches. RESULTS: Many surgical specialists recommend that END be routinely performed in patients with N0 HNSCC when the risk of occult metastases is estimated to exceed 20%; however, patients who undergo END have no proven survival benefit over those who are initially staged as N0 and undergo therapeutic neck dissection (TND) after the development of apparent regional disease. There is a lack of data regarding the proper management of regional nodal basins in patients with N0 CSCC. In the absence of evidence-based data, the cutaneous surgeon must rely on clinical judgment to guide the management of patients with N0 high-risk CSCC of the head and neck. CONCLUSIONS: Appropriate work-up for occult nodal disease may occasionally be warranted in patients with high-risk CSCC. END may play a role in only a very limited number of patients with high-risk CSCC.