Reconstruction of nasal defects larger than 1.5 centimeters in diameter

Revision Nasal Reconstruction After Previous Forehead Flap

Reconstructing the nose poses considerable challenges, even for the most skilled surgeons. Significant nasal reconstructions often require later revisions to address persistent issues in both form and function, and it is crucial to discuss this possibility with the patient before embarking on the reconstructive process. Minor revisions can often be managed by making direct incisions between nasal subunits, coupled with soft tissue sculpting or the use of structural grafts for augmentation. When minor adjustments prove insufficient, the initial reconstruction may need to be entirely revised with a second forehead flap.

Nuances in Forehead Flap Reconstruction for Large Nasal Defects

The forehead flap is a time-tested and robust resurfacing flap used for nasal reconstruction. Owing to its excellent color and texture match, acceptable donor site morbidity, and robust and independent blood supply that can support both structural and internal lining grafts, this flap remains the workhorse flap for resurfacing large nasal defects. Various nuances of this technique relating to defect and template preparation, flap design, flap elevation, flap inset, donor site closure, and pedicle division are discussed in this article. These nuances are the guiding principles for improved outcomes using a forehead flap for the reconstruction of large nasal defects.

Transfer Patterns and Clinical Applications of the Forehead Flaps Based on the Supratrochlear Artery and Supraorbital Artery

This study aimed to describe the application of transferring preexpanded forehead flaps based on the supratrochlear and supraorbital arteries in 3 patterns for facial reconstruction: Pattern I, interpolated flap; Pattern II, island flap; and Pattern III, propeller flap, which was subdivided into direct propeller flap (Pattern IIIa) and indirect propeller flap (Pattern IIIb). During the first stage, a tissue expander was inserted underneath the forehead. After sufficient inflation of the expander, a forehead flap based on the supratrochlear or supraorbital artery was elevated and transferred to reconstruct the facial defects. Three weeks after the surgery, pedicle division was performed, in which Pattern I and Pattern IIIb flaps were used. Twenty-four patients underwent facial reconstruction. Twenty-three flaps survived without any perfusion-related complications. Venous congestion developed in an island flap. All patients were followed up after surgery, ranging from 2 to 156 (mean, 19) months. The color and texture of the flap matched those of the adjacent skin. The patients and their families were satisfied with the final functional and esthetic outcomes. The forehead flap based on the supratrochlear and supraorbital arteries provides reliable coverage of facial defects. The conventional interpolated flap continues to be the most dependable. Single-stage reconstruction using the island flap and direct propeller flap is applicable to patients who decline the pedicle division procedure. The novel technique of using the indirect propeller flap is safe for cheek reconstruction with minimal donor-site morbidity and esthetically pleasing results.

Nasal Valve Insufficiency in Dermatologic Surgery

BACKGROUND

Few publications have addressed nasal valve (NV) insufficiency as a complication of Mohs micrographic surgery.

OBJECTIVE

To comprehensively review the literature and further characterize the causes, prevalence, evaluation, and management of NV insufficiency as it relates to cutaneous oncology.

MATERIALS AND METHODS

A PubMed search was completed to identify articles related to the NV in the context of Mohs micrographic surgery, cutaneous oncology, and reconstruction.

RESULTS

Nasal valve insufficiency may occur during tumor removal and/or reconstruction. Defect size larger than 1 cm; location on the ala, sidewall, or alar crease; lack of structural support; and poorly planned flaps are the main risk factors for NV insufficiency. Several surgical techniques have been described to avoid and correct this complication.

CONCLUSION

Nasal valve insufficiency may be an underrecognized and underreported complication of Mohs micrographic surgery. Nasal valve insufficiency may be identified with relatively simple tests. Knowledge of NV anatomy and preoperative function assessment is essential. Recognition of this potential complication and awareness of its prevention and management may decrease morbidity in patients undergoing cutaneous surgery.

Outcomes of Two-Stage Interpolated Flaps Versus Single-Stage Techniques for Reconstruction of Intermediate Nasal Defects

Objective: This study compares the results of patients undergoing reconstruction of intermediate nasal defects, measuring 1.5-2.5 cm, with single-staged techniques as opposed to the traditionally recommended staged interpolated flap reconstruction. Design: This is a retrospective review of patients who underwent reconstruction of a nasal defect by a single surgeon between 2010 and 2016. Methods: Postoperative results including revision surgery, treating persistent edema with Kenalog (triamcinolone acetonide), and perioperative complications were analyzed. Aesthetic outcomes were analyzed by a panel of experts and nonexperts, and compared using a 5-point Likert scale. Results: In total, 51 single-stage and 26 two-stage patients underwent evaluation, and of these, 40 single-stage and 15 two-stage patients underwent panel analysis of aesthetic outcomes. The odds of requiring a revision procedure were 6.69 times higher and odds of using Kenalog postoperatively were 29.67 times higher in the two-stage group than in the single-stage group. Aesthetic scores were consistently better for the single-stage group for both panels. Conclusion: Patients undergoing single-stage techniques for reconstruction of intermediate nasal defects showed improved appearance and reduced number of additional procedures relative to patients undergoing two-stage techniques with short-term follow-up.

Early nasal reconstruction after skin-preserving excision of squamous cell carcinoma of the nasal vestibule

Surgery for early-stage squamous cell carcinoma of the nasal vestibule (SCCNV) may lead to facial disfigurement. We wanted to investigate if skin-preserving excision of SCCNV with reconstruction is oncologically, aesthetically, and functionally justifiable in cases with proximity to the skin. From 2010 to 2016, 16 patients underwent skin-preserving excision of T1-2 N0 SCCNV by a lateral rhinotomy approach at a tertiary referral center. The inner nose was reconstructed using a mucoperichondrial septal flap for the inner lining and a septal pivot flap and/or auricular cartilage grafting for the framework. Nasal appearance was measured on pre- and postoperative photographs. Median follow-up was 5.4 years. Three (19%) patients received adjuvant radiotherapy. Two (12.5%) recurrences occurred locally, but not at the site of preserved skin. The Kaplan-Meier estimate of local control rate after 5 years was 83%. All patients could be salvaged, giving an ultimate control rate of 100%. Nasal tip projection decreased by 6.7% (p < 0.001), and it was retained normal or near normal in 87.5% of patients. Nasal axis changed by 1.7° (p = 0.5). Nasal deviation occurred in 6.25% (1/16) of patients, and minor alar retraction in 6.25% of patients (1/16). Nasal breathing was normal or close to normal in 75% (12/16) of patients. Skin-preserving excision of SCCNV is oncologically justifiable in selected cases even in proximity to nasal skin. Early inner nasal reconstruction preserves nasal form and function to a high degree. This technique is a suitable alternative to rhinectomy and to avoid the sequelae of radiotherapy in selected cases.

Neovascularization Perfusion of Melolabial Flaps Using Intraoperative Indocyanine Green Angiography

Importance

Assessment of melolabial flap perfusion using indocyanine green (ICG) angiography for nasal reconstruction has not been previously described.

Objective

To assess melolabial flap relative perfusion using ICG angiography in nasal reconstruction and highlight its clinical relevance.

Design, Setting, and Participants

In this retrospective case series at a tertiary referral center, 10 patients undergoing melolabial flap reconstruction of nasal defects between January 2015 to April 2018 with flap perfusion were assessed by ICG angiography.

Exposures

Indocyanine green angiography was performed to assess melolabial flap perfusion at second stage surgery after temporary clamping of the pedicle and after pedicle division and flap inset.

Main Outcomes and Measures

Flap perfusion in relation to a reference point on the cheek was calculated after both pedicle clamping and division by 2 methods: (1) ingress (arterial inflow) and egress (venous outflow) flap-to-cheek ratio; (2) flap-to-cheek perfusion (fluorescence) ratio at 3 time points (midpoint of ICG flap inflow, maximum [peak] fluorescence, and midpoint of ICG outflow), and their calculated mean. Correlations of perfusion with time between stages, and patient factors were performed; perfusion parameters after temporary pedicle clamping and after division and flap inset were compared.

Results

Ten patients (mean [SD] age, 66 [7.5] years) were enrolled with a mean (SD) interval of 23 (4) days between first and second surgery. No correlation existed between perfusion parameters and time interval between first and second stage, or any other patient factors. Of the different perfusion parameters, a statistically significant difference was observed when comparing temporary clamping and postdivision mean (SD) flap-to-cheek perfusion ratio (0.89 [0.22] and 0.80 [0.19]; 95% CI, 4.1-12.6; P = .001), as well as mean (SD) peak perfusion ratio (0.81 [0.2] and 0.77 [0.2]; 95% CI, 0.005-0.080; P = .02) only. No partial or complete flap necrosis was reported after pedicle division.

Conclusions and Relevance

Indocyanine green angiography is an effective method to determine neovascularization perfusion of melolabial flaps, with a mean perfusion of 89% after pedicle clamping. Future applications of this technology include use in patients at high risk for flap necrosis, or those who may benefit from early flap division to ensure adequate perfusion and minimize the time interval between staged procedures.

Level of Evidence

NA.

Utility of Indocyanine Green Angiography to Identify Clinical Factors Associated With Perfusion of Paramedian Forehead Flaps During Nasal Reconstruction Surgery

Importance

Identifying factors affecting forehead flap neovascularization during nasal reconstruction surgical procedures using quantitative dynamics of fluorescence from indocyanine green angiography may be associated with reduced vascular complications.

Objectives

To identify quantifiable forehead flap perfusion measures using indocyanine green angiography during nasal reconstruction procedures and to evaluate clinical factors associated with neovascularization.

Design, Setting, and Participants

Retrospective cohort study of 71 patients at a tertiary referral center of Stanford University, Stanford, California, between January 1, 2010, and March 31, 2018, undergoing forehead flap nasal reconstruction surgery with flap perfusion assessed by indocyanine green angiography.

Exposures

Indocyanine green angiography was performed intraoperatively to record forehead flap neovascularization during the second stage of nasal reconstruction surgery after temporary clamping of the pedicle.

Main Outcomes and Measures

With use of quantifiable data of fluorescence dynamics, flap perfusion in association with a reference point in the cheek after pedicle clamping was assessed by 2 methods: (1) ingress (arterial inflow) and egress (venous outflow) flap-to-cheek ratio and (2) flap-to-cheek perfusion (fluorescence) ratio at 3 time points (midpoint of indocyanine green flap inflow, maximum fluorescence [peak], and midpoint of indocyanine green flap outflow) and their calculated mean. Association of the perfusion measures with patient and procedural factors was performed using linear regression models.

Results

Of the 71 patients included in the study, 43 (61%) were men; the mean (SD) age was 71.1 (11.0) years. The mean (SD) flap-to-cheek inflow ratio was 0.48 (0.40), peak fluorescence ratio was 0.59 (0.34), and outflow ratio was 0.88 (0.42). The calculated mean (SD) flap-to-cheek perfusion ratio of these measures was 0.65 (0.35). The mean (SD) flap-to-cheek ingress ratio was 0.54 (0.36) and egress ratio was 0.65 (0.98). With use of a multivariable regression model, the time between stages was positively associated with flap-to-cheek ingress ratio (β, 0.015; 95% CI, 0.001 to 0.030), and cartilage grafting was negatively associated with flap-to-cheek outflow ratio (β, -0.240; 95% CI, -0.472 to -0.008).

Conclusions and Relevance

The findings suggest that indocyanine green angiography is an effective method to quantify relative neovascularization perfusion of forehead flaps. Future applications may include the use of this technology to aid in early flap division and ensure adequate perfusion among high-risk patients.

Level of Evidence

NA.

Assessment of a Novel Computer Algorithm for Printing a 3-Dimensional Nasal Prosthetic

Importance

The introduction and evaluation of a novel technique to create nasal prostheses with 3-dimensional (3-D) imaging software may circumvent the need for an anaplastologist.

Objectives

To describe a novel computer algorithm for the creation of a 3-D model of a nose and to evaluate the similarity of appearance of the nasal prosthesis with that of the individual's nose.

Design, Setting, and Participants

A prospective pilot study with a cross-sectional survey was conducted from August 1 to October 31, 2016, at a tertiary care academic center. Five volunteers were used for creation of the nasal prostheses, and 36 survey respondents with a medical background were involved in evaluating the nasal prostheses.

Exposures

A computer algorithm using a 3-D animation software (Blender; Blender Foundation) and Adobe Photoshop CS6 (Adobe Systems) were used to create a 3-D model of a nose. Photographs of 5 volunteers were processed with the computer algorithm. The model was then printed using a desktop 3-D printer. Attending physicians, residents, and medical students completed a survey and were asked to rate the similarity between the individuals' photographs and their 3-D printed nose on a Likert-type scale.

Main Outcomes and Measures

The similarity between 3-D printed nasal models and photographs of the volunteers' noses based on survey data.

Results

Thirty-six survey respondents evaluated 4 views for each of the 5 modeled noses (from 4 women and 1 man; mean [SD] age, 26.6 [5.7] years). The mean (SD) score for the overall similarity between the photographs and the 3-D models was 8.42 (1.34). The mean scores for each nasal comparison ranged from 7.97 to 8.62. According to the survey, respondents were able to match the correct 3-D nose to the corresponding volunteers' photographs in 171 of 175 photographs (97.7%). All surveyed clinicians indicated that they would consider using this tool to create a temporary prosthesis instead of referring to a prosthodontist.

Conclusions and Relevance

This algorithm can be used to model and print a 3-D prosthesis of a human nose. The printed models closely depicted the photographs of each volunteer's nose and can potentially be used to create a temporary prosthesis to fill external nasal defects. The appropriate clinical application of this technique is yet to be determined.

Complications in facial Mohs defect reconstruction

PURPOSE OF REVIEW

To review the recent literature in regards to complications after reconstruction of Mohs defects, outline common pitfalls and to discuss the literature on avoiding complications as outlined per aesthetic subunit.

RECENT FINDINGS

Complications in facial Mohs reconstruction commonly consist of infection, wound necrosis and dehiscence, hematoma and suboptimal scarring. However, site-specific complications such as hairline or eyebrow distortion, eyelid retraction or ectropion, nasal contour abnormality, alar retraction, nasal valve compromise, significant facial asymmetry or even oral incompetence must also be considered.

SUMMARY

A successful reconstruction mimics the premorbid state and maintains function. The use of perioperative antibiotics, sterile technique, meticulous hemostasis, subcutaneous dissection and deep sutures to minimize wound tension should be considered for all Mohs reconstructions. Cartilage grafting can minimize nasal deformity and obstruction. Reconstruction near the lower eyelid should employ periosteal suspension sutures to minimize downward tension and lid retraction. Perioral complications, such as microstomia and oral incompetence, typically improve with time and therapy. Always consider secondary procedures such as dermabrasion, steroid injection, scar revision and laser resurfacing to help optimize aesthetic outcome.

Reconstruction of Cutaneous Nasal Defects

Mohs micrographic surgery has become the standard of care for the treatment of cutaneous malignancies. Reconstructing cutaneous defects of the nose can be challenging, as form and function must be respected to the greatest extent possible. A wide range of reconstructive techniques are used. Secondary intent, primary closure, skin grafts, local flaps, and the interpolated workhorse flaps represent the spectrum of options, each with specific advantages and disadvantages. Vigilant postoperative care, including judicious use of adjunctive procedures, can improve outcomes. A subunit approach to reconstruction aids with surgical planning in order to achieve the best possible results.

Epithetic nasal reconstruction for nasal carcinoma: retrospective analysis on 22 patients

Advanced nasal cancers usually demand partial or total rhinectomy followed by radiotherapy. Reconstruction of the resulting defects can be achieved by means of reconstructive plastic surgery and/or epithetic surgery. The data of 22 patients who had been treated after nasal ablation by means of custom-made silicone nasal epithesis fixed by bone-anchored magnets between 2003 and 2014 were evaluated retrospectively. There were 15 male (68.2 %) and 7 (31.8 %) female patients. The most common etiology that led to epithetic rehabilitation was a squamous cell carcinoma in 16 patients. An operative revision was necessary in two patients due to screw loss. Twenty patients were still alive with no evidence of disease after minimum follow-up of 2 years (90.9 %). Epithetic rehabilitation after nasal ablation to treat nasal malignancies is an interesting alternative to plastic and reconstructive surgery. Bone-anchored fixation using magnets can achieve a stable epithetic fixation after nasal ablation necessitating, in numerous cases, additional adjuvant therapy like radiation.

Assessment of Patients Who Underwent Nasal Reconstruction After Non-Melanoma Skin Cancer Excision

BACKGROUND

Basal and squamous cell carcinomas are the most common malignant cutaneous lesions affecting the nose. With the rising incidence of skin cancers, plastic surgeons increasingly face nasal reconstruction challenges. Although multiple options exist, optimal results are obtained when "like is used to repair like". We aimed to introduce a simple algorithm for the reconstruction of nasal defects with local flaps, realizing that there is always more than one option for reconstruction.

PATIENTS AND METHODS

We retrospectively reviewed 163 patients who underwent nasal reconstruction after excision of non-melanoma skin cancer between March 2011 and April 2014. We analyzed the location of the defects and correlated them with the techniques used to reconstruct them.

RESULTS

There were 66 males and 97 females (age, 21-98 years). Basal cell carcinoma was diagnosed in 121 patients and squamous cell carcinoma in 42. After tumor excision, all the defects were immediately closed by either primary closure or local flap options such as Limberg, Miter, glabellar, bilobed, nasolabial, V-Y advancement, and forehead flaps.

CONCLUSIONS

Obtaining tumor-free borders and a pleasing aesthetic result are major concerns in nasal reconstruction. Defect reconstruction and cosmesis are as important as rapid recovery and quick return to normal daily activities, and these should be considered before performing any procedure, particularly in elderly patients.

Characterization of a migrative subpopulation of adult human nasoseptal chondrocytes with progenitor cell features and their potential for in vivo cartilage regeneration strategies

Background

Progenitor cells display interesting features for tissue repair and reconstruction. In the last years, such cells have been identified in different cartilage types. In this study, we isolated a migrative subpopulation of adult human nasoseptal chondrocytes with progenitor cell features by outgrowth from human nasal septum cartilage. These putative progenitor cells were comparatively characterized with mesenchymal stem cells (MSC) and human nasal septum chondrocytes with respect to their cellular characteristics as well as surface marker profile using flow cytometric analyses. Differentiation capacity was evaluated on protein and gene expression levels.

Results

The migrative subpopulation differentiated into osteogenic and chondrogenic lineages with distinct differences to chondrocytes and MSC. Cells of the migrative subpopulation showed an intermediate surface marker profile positioned between MSC and chondrocytes. Significant differences were found for CD9, CD29, CD44, CD90, CD105 and CD106. The cells possessed a high migratory ability in a Boyden chamber assay and responded to chemotactic stimulation. To evaluate their potential use in tissue engineering applications, a decellularized septal cartilage matrix was either seeded with cells from the migrative subpopulation or chondrocytes. Matrix production was demonstrated immunohistochemically and verified on gene expression level. Along with secretion of matrix metalloproteinases, cells of the migrative subpopulation migrated faster into the collagen matrix than chondrocytes, while synthesis of cartilage specific matrix was comparable.

Conclusions

Cells of the migrative subpopulation, due to their migratory characteristics, are a potential cell source for in vivo regeneration of nasal cartilage. The in vivo mobilization of nasal cartilage progenitor cells is envisioned to be the basis for in situ tissue engineering procedures, aiming at the use of unseeded biomaterials which are able to recruit local progenitor cells for cartilage regeneration.

Usefulness of the Paramedian Forehead Flap in Nasal Reconstructive Surgery: A Retrospective Series of 41 Patients

INTRODUCTION

Surgical reconstruction of the external nose, a common site for nonmelanoma skin cancer, is difficult. Oncologic surgery often leaves large skin defects, occasionally involving the underlying cartilage and nasal mucosa. We describe our experience with the paramedian forehead flap for reconstruction of nasal defects.

METHODOLOGY

We performed a retrospective study of consecutive patients in whom a paramedian forehead flap was used to repair surgical defects of the nose between July 2004 and March 2011. We describe the clinical and epidemiologic characteristics, the surgical technique, complications, secondary procedures, and cosmetic results.

RESULTS

The series comprised 41 patients with a mean (SD) age of 67 (10.36) years. The majority were men (male to female ratio, 2.4:1). Associated risk factors included diabetes in 27% of patients, cardiovascular risk factors in 49%, and smoking or drinking in 19.5%. The tissue defects were distal in 80% of cases and nonpenetrating in 78%. The mean (SD) diameter was 21.6 (6.78) mm. Early postoperative complications occurred in 14.6% of patients and late complications in 31.7% (trap door effect in 22% and hair transposition in 19%), with a need for Readjustment in a second operation was needed in 19.5% of patients. The cosmetic results were considered acceptable or excellent in 90.2% of cases.

DISCUSSION

The paramedian forehead flap is versatile and provides skin of a similar color and texture to that of the external nose. It has a reliable vascular pedicle that guarantees the viability not only of the flap but also of other tissues that may be used in combination, such as chondromucosal or chondrocutaneous grafts. Revision of the technique in a second operation may sometimes be required to achieve an optimal result.

The midline central artery forehead flap: a valid alternative to supratrochlear-based forehead flaps

IMPORTANCE

This study clarifies the pedicle geometry and vascular supply of a midline forehead flap for nasal reconstruction. It reports on the vascular reliability of this flap and its ability to reduce hair transposition to the nose, a major complicating factor of previous forehead flap designs.

OBJECTIVE

To compare the vascular reliability of 3 different pedicle designs of the forehead flap in nasal reconstruction (classic paramedian, glabellar paramedian, and central artery flap design) and evaluate hair transposition rates and aesthetic results.

DESIGN, SETTING, AND PARTICIPANTS

Retrospective analysis of patient data and outcomes retrieved from computer files generated at the time of surgery, supplemented by data from the patient medical records and photographic documentation, from a tertiary referral nasal reconstructive practice, within a secondary-care hospital setting. The study population included all consecutive patients over a 19-year period who underwent primary forehead flap repair of nasal defects, with more than 3 months of postoperative follow-up and photographic documentation.

INTERVENTIONS

Three sequential forehead flap patterns were used (classic paramedian flap, glabella flap, and central artery flap) for nasal reconstruction over the study duration.

MAIN OUTCOMES AND MEASURES

Data collected included patient characteristics, method of repair, complications, functional outcome, and patient satisfaction score. For cosmetic outcome, photographic documentation was scored by a medical juror.

RESULTS

No forehead flap had vascular compromise in the first stage. Partial flap necrosis was reported in subsequent stages in 4 patients (1%), with no statistical difference in the rate of vascular compromise between the 3 flap designs. Hair transposition to the nose was lower in the central artery forehead flap (7%) compared with the classic paramedian (23%) and glabellar paramedian (13%) flaps (P < .05). Photographic evaluation in 227 patients showed that brow position (98%) and color match (83%) were good in the majority of the patients.

CONCLUSIONS AND RELEVANCE

In this series, the central artery forehead flap was as reliable (in terms of vascularity) as the glabellar and classic paramedian forehead flap. Its use resulted in a statistically significant reduction in transfer of hair to the nose in our series.

LEVEL OF EVIDENCE

3.

Nasal Reconstruction: A Simplified Approach Based on 419 Operated Cases

BACKGROUND

The purpose of this review is to examine a single surgeon's 10-year experience with nose defects and offer a simplified approach for nasal reconstruction to close most nasal defects following Mohs micrographic surgery (MMS).

PATIENTS AND METHODS

A retrospective chart review was performed on patients undergoing repair of MMS defects of the nose over a 10-year period. Data collected included patients' age and sex, anatomic location of the defect, type of reconstruction, and number of operations required.

RESULTS

A total of 419 patients were included in this study. The most common location for nasal reconstruction was the nasal dorsum and sidewalls (66.35 %). Complications mainly related to reconstruction of defects of the tip ± ala (n = 31), followed by the ala (n = 15) and the dorsum and sidewalls (n = 13). Bulkiness of the flap used (n = 32) and hypertrophic scar (n = 13) were the most common complications. The bilobed flap was the most commonly used flap (n = 145), followed by nasolabial flap (n = 69), FTSGs (n = 63), forehead flap (n = 62), and dorsal glabellar flap (n = 44).

CONCLUSIONS

In this article, a simplified approach for nasal defects reconstruction is presented, which is based on commonly performed local flaps and skin grafting. This algorithm can be useful for the novice plastic surgeons in planning a reconstructive strategy that will be efficient, easy to perform, and produces an acceptable esthetic and functional outcome.

Reconstruction of Nasal Cleft Deformities Using Expanded Forehead Flaps: A Case Series

INTRODUCTION

Reconstruction of the nasal clefts is a challenging task considering the nasal anatomic complexity and their possible association with craniofacial defects. The reconstruction of these defects needs extensive amounts of soft tissue that warrant the use of forehead flaps. Often presence of cranial defects and low hairline compromise the amount of tissue available for reconstruction warrenting tissue expansion.

AIM

To evaluate the efficacy of tissue expansion in reconstruction of congenital nasal clefts.

SUBJECTS AND METHODS

9 patients with congenital nasal clefts involving multiple sub units were taken up for nasal reconstruction with expanded forehead flaps. The average amount of expansion needed was 200 ml. The reconstruction was performed in 3 stages.

RESULTS

Expanded forehead flaps proved to be best modality for reconstruction providing the skin cover needed for ala, columella and dorsum with minimal scarring at the donor site.

CONCLUSION

Expansion of the forehead flap is a viable option for multiple sub unit reconstruction in congenital nasal cleft deformities.

Aesthetic modification to the rintala flap: a case series

BACKGROUND

Defects of the nasal dorsum have historically been repaired based on size and with respect to subunit principle. This case series provides a previously undescribed option for correcting defects of the nasal dorsum 1.5-2.5 cm in size. The foremost advantages of this technique are preservation of nasal subunit integrity and the integration of subtle nasal tip rotation.

METHODS

We present a case series involving five consecutive patients aged 49-74 after Mohs excision for malignancies of the nasal dorsum. Defects were corrected using the aesthetic modification to the Rintala flap over a 10-year period by two primary surgeons.

CONCLUSIONS

The aesthetic modification to the Rintala flap should be considered as a reconstruction option for patients with defects of the nasal dorsum between 1.5 and 2.5 cm in size, especially for those patients desiring rotation of the nasal tip.

LEVEL OF EVIDENCE IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Current concepts and advances in the application of tissue engineering in otorhinolaryngology and head and neck surgery

OBJECTIVE

This paper reviews the progress in the rapidly expanding scientific discipline of tissue engineering, which may have an integral role in the future of otorhinolaryngology. This article seeks to inform on the current concepts and principles of tissue engineering, and describe the state of the art research and developments in this exciting field as applied to ENT and head and neck surgery.

METHOD

In order to carry out a comprehensive review of the literature spanning the past 30 years, a search of relevant publications was performed using the Web of Knowledge, Medline and PubMed databases.

RESULTS

This search identified 85 scholarly articles, which were utilised as the basis of this review.

CONCLUSION

Given the current rate of development of tissue engineering research, it is likely that tissue-engineered implants will be widely used in surgical practice, including ENT and head and neck surgery.

Interpolated subcutaneous fat pedicle melolabial flap for large nasal lining defects

Full-thickness nasal deformities are a reconstructive challenge. Restoration of a reliable internal lining is critical for a successful reconstruction. Septal hinge flaps are the workhorse for internal lining defects. However, these and other intranasal mucosal flaps are sometimes unavailable due to prior harvest or previous oncologic resection. We present the two-stage interpolated subcutaneous fat pedicle melolabial flap for lining large defects when traditional intranasal flaps are unavailable. This approach is particularly useful when one forehead flap has already been expended, preserving the patient's remaining forehead tissue for external cover.

Transposition flaps in nasal reconstruction

The aim of reconstructive nasal surgery is not only to rebuild all or part of the nose but also to blend and tailor the new and old tissues in such a way as to create the best possible result. Although a variety of reconstructive options exist, local or regional skin flaps are one of the most powerful reconstructive tools for the reconstruction of cutaneous nasal defects. This article discusses the fundamentals of nasal reconstruction and describes the local and regional transposition flaps for the reconstruction of nasal defects.

The midline forehead flap in nasal reconstruction

An ancient Indian medical document, the Sushruta Samhita, describes a technique of using a flap from the forehead for nasal reconstruction. The forehead flap remains the workhorse for major nasal resurfacing today. Contemporary nasal reconstruction with forehead flaps uses the well-established concept of facial and nasal subunits, restoring the three-dimensional morphology by replacing missing tissue with like tissue. This article covers the history of forehead flap surgery, current concepts in flap design, surgical steps, potential complications, defect analysis, lining, framework, and cover as a means of restoring the three-dimensional nasal morphology.

Complex nasal reconstruction: a case study: reconstruction of full-thickness nasal defect

Reconstruction of complex full-thickness nasal defects requires the reconstitution of the mucous internal nasal lining, the cartilaginous framework, and the aesthetic contour of the cutaneous nasal covering. Goals of reconstruction include restoration of a functional nasal airway and redefinition of the contours of the nose as well as its relationship to the cheek and lip with the least amount of morbidity to the patient. This article details a multistaged approach to repairing such a defect using an ipsilateral septal mucoperichondrial flap, multiple cartilage grafts, a paramedian forehead flap, and a cheek flap in a woman who had undergone Mohs surgery.

Reconstruction of the dorsal and sidewall defects

Defects of the nasal dorsum or sidewall can result from trauma, congenital lesions, extirpation of neoplasms, or iatrogenic injuries. Simple techniques are often used to reconstruct defects in this area with excellent outcomes. Complex defects require more sophisticated techniques including multilayer closures using pedicled flaps or free tissue transfer. This review discusses key anatomic and functional principles and techniques to assist in planning for reconstruction of nasal dorsum and sidewall defects from any cause.

[Paramedian forehead flap for the reconstruction of extensive nasal defects]

BACKGROUND

The Department of Dermatology at Hospital Universitario de Guadalajara in Spain is a referral center for Mohs micrographic surgery. Consequently, we are regularly faced with the problem of repairing large surgical defects on the nose. The paramedian forehead flap is currently one of the techniques of choice for the repair of such defects.

MATERIALS AND METHODS

We review our experience in the repair of nasal defects using the paramedian forehead flap over the period from 2004 to 2008. We describe the surgical technique, complications, and final results.

RESULTS

Ten patients (mean age, 75.1 years) were treated using this flap. Two patients also required cartilage grafts and reconstruction of the internal nasal lining. The most common complications were bleeding (60%) and partial necrosis (10%). The final cosmetic and functional results were considered good or excellent in 90% of cases.

CONCLUSIONS

The forehead flap continues to be one of the best options for the closure of surgical defects of the nasal pyramid larger than 2 cm. Adequate knowledge and careful application of the technique allows excellent results to be obtained with few complications.

Management of composite defects of the nose, cheek, eyelids and upper lip

AIM

To assess the results of reconstruction of composite defects involving the nose which extend to involve the cheeks, eyelids or upper lip.

STUDY DESIGN

Retrospective observational study.

MATERIAL

Sixteen patients with defects of the nose extending to the adjoining cheek, upper lip or eyelid.

METHOD

A combination of flaps and grafts were needed to reconstruct these defects so that the aesthetic subunits were replaced and joined at their junctions wherever possible.

RESULTS

Where the defect required three or four flaps, there was some unpredictable cicatrisation at their junction that resulted in some asymmetry. This problem primarily occurred at the alar base, and was compounded if there was tissue loss of the premaxilla or maxilla.

CONCLUSION

If a defect that involves the nose, cheek and upper lip is repaired with a combination of cheek advancement, nasolabial, paramedian forehead and/or septal flaps, there can be unpredictable cicatrisation at their junction, particularly at the alar base. In these circumstances, we recommend replacing the nasal and other defects with a slightly more generous amount of tissue than would be taken to repair a similar, but solitary, defect. It is important to replace any loss of the facial skeleton, in order to provide support for overlying flaps.

Interpolated forehead and melolabial flaps

Facial reconstruction is a challenging yet rewarding endeavor. The interpolated forehead and melolabial flaps are well-established methods for facial restoration, especially for the repair of nasal defects following excision of cutaneous malignancies. Repair of facial defects using interpolation flaps requires an appreciation of variations in skin thickness, facial contours, and functional concerns at the donor and recipient sites. A detailed review of flap design, modifications, and implementation is provided for the forehead and melolabial flaps.

Review of nasal reconstruction

INTRODUCTION

Nasal reconstruction after tumor extirpation is a necessity. The aim of the current study was to present the Greek experience in this field for a long period.

MATERIALS AND METHODS

Charts of patients who underwent nasal reconstruction, from 1985 to 2006, were reviewed retrospectively. They were analyzed in relation to their age, sex, location of the defect, histologic diagnosis of the lesion, type of reconstruction, recurrence of the tumor, and final outcome.

RESULTS

A total of 1585 patients underwent nasal reconstruction by the senior author (O.P.) during a period of 21 years in our department. A clear male preponderance was shown (845 or 53.3% vs 740 or 46.7%). Their age ranged from 13 to 97 years with a mean of 65.9 years. One thousand five hundred ninety-three different tumors had been resected during the studied period (some patients had >1 lesion). Basal cell carcinoma was the most common type, affecting 1399 patients (87.8%), followed by squamous cell carcinoma, which was identified in 109 patients (6.8%). Cutaneous melanoma was not a frequent diagnosis. Excision and primary closure represented the most frequent type of reconstruction, followed by flap reconstruction and any type of graft. Sidewalls were the usual location in the whole population. Recurrence rate was 3.4%.

CONCLUSIONS

Nasal reconstruction remains a challenge for every plastic surgeon. Efficient diagnosis and appropriate reconstruction are prerequisites for the final desired outcome.

[Reconstruction of the nose after oncological operations]

INTRODUCTION

Skin cancer (basal cell carcinoma, squamous cell carcinoma) and melanoma are the most frequent malignancy appearing in a human begin. The treatment of choice is surgical excision of tumor with margins of healthy tissue. An extent of resection determines the method of reconstruction.

MATERIAL

The authors present reconstructive methods of nasal skin cancer defects performed in 61 patients treated in the Department of Otolaryngology of Medical University of Warsaw between 1998 and 2007. Basal cell carcinoma, squamous cell carcinoma and melanoma were diagnosed in 49, 10 and 2 patients respectively. Depending on the extend of tumor resection different reconstructive techniques were performed.

RESULTS

In 9 patient tumor recurrence was detected during 1-2 years of follow-up. Among them, in 7 patients another reconstruction procedure was required, and 1 patient underwent several surgical procedures due to subsequent recurrences.

CONCLUSIONS

Surgical wounds after resection of skin cancer of the nose can be closed primarily or by means of variety of reconstructive techniques that in some cases may be combined depending on the extent of a defect.

Anchor-shaped nasal framework designed for total nasal reconstruction

BACKGROUND

Nasal frame grafting has been widely used in nasal reconstruction; however, a stable nasal frame with satisfactory functional and aesthetic results is hard to achieve in total nasal reconstruction. In this study, we devised a technique to create an individually designed anchor-shaped nasal frame composed of an L-strut and two C-battens, and applied it in the total nasal reconstruction procedure to achieve satisfactory functional and aesthetic results.

METHOD

In a 9-year period, 17 patients with total nasal defect were treated with autogenous costal grafting utilising forehead flap as the covering. The techniques of the individualised design of the anchor-shaped nasal frame were applied to fit the facial features. All cases were followed for at least 18 months, and outcomes were evaluated separately by the patients and plastic surgeons in terms of aesthetics, stability and function.

RESULTS

Satisfactory results were achieved in most of the cases after the operation. More than 82.4% of the patients in this series were assessed as satisfactory by both groups in the aesthetics survey; more than 76.5% in the stability survey; and more than 64.7% in the function survey. Complications included flap hyperpigmentation (one case), flap-skin paleness (one case), L-strut distortion (three cases) and stuffiness of the nostrils (one case) as well as minor brow elevation of the donor side (five cases).

CONCLUSIONS

The procedure of applying individually designed anchor-shaped nasal frame with forehead flap technique has obvious advantages for restoration of distinct and delicate subunits, stable nasal structure and good nasal function.

Complications with forehead flaps in nasal reconstruction

OBJECTIVES/HYPOTHESIS

To determine what characteristics and comorbidities are associated with a higher rate of complications in patients undergoing nasal reconstruction with a forehead flap.

STUDY DESIGN

Retrospective chart review.

METHODS

Chart review was completed on all patients undergoing nasal reconstruction with forehead flap from 1995 to 2008. Three pre-existing comorbidities were tracked: diabetes, smoking, and vascular disease. Major complications (flap necrosis, nasal obstruction, alar notching) and minor adverse outcomes (partial nasal obstruction, epidermolysis, and alar asymmetry) were recorded.

RESULTS

Two hundred five patients with a median age of 66 years had forehead flap reconstruction between October 1995 and July 2008. Sixty-two patients (30.2%) had full-thickness defects. Forty-eight patients (23.4%) were smokers, 17 (8.3%) were diabetics, and 90 (43.9%) fell into our category of vascular disease. Thirty-three (16.1%) developed a major complication at some point in their postoperative course, with 11 (5.4%) having some degree of flap necrosis, 10 (4.9%) nasal obstruction, and 20 (9.8%) alar notching. Full-thickness defects were significantly associated with higher incidences of any major complication, and had higher odds of flap necrosis and alar notching. Smokers had higher odds of developing flap necrosis. Neither the presence of diabetes, increased age, nor vascular disease was significantly associated with higher rates of major complications.

CONCLUSIONS

Smokers with full-thickness defects are shown to be at greater odds for developing a postoperative complication. Laryngoscope, 2009.

A reliable surface landmark for localizing supratrochlear artery: Medial canthus

OBJECTIVE: To determine the reliability of medial canthus as a surface landmark to locate supratrochlear vascular pedicle.

STUDY DESIGN AND SETTING: The distance from medial canthal line to supratrochlear vascular pedicle was measured in 57 healthy volunteers (Doppler imaging study) and also in 15 fresh cadavers.

RESULTS: In the Doppler study, the pedicle was found at most 3 mm lateral or medial to medial canthus (mean ± SD, 0.8 ± 0.7 mm). SVP mark tended to be medial to the medial canthus mark in females (males, 6; females, 42), whereas it was lateral to it in males (males, 20; females, 5). In the cadaver study, the pedicle was found 0.7 mm away from medial canthus on average.

CONCLUSION: Medial canthus can be used as a reliable landmark for paramedian forehead flaps. When Doppler examination fails, pedicle may be found at most 3 mm away from medial canthus. SVP is more commonly located lateral to medial canthus in males and medial to it in females.

Forehead anatomy: arterial variations and venous link of the midline forehead flap

The largest prospective cadaver study done over a 3-year period to investigate the arterial variations of the forehead is presented. The primary goal was to find anatomical support for various forehead flaps previously designed. Thirty cadaver foreheads (60 hemi-foreheads) were dissected from deep to superficial to identify arterial variations. The arteries were filled with a latex solution prior to dissection. The results show that the supratrochlear and dorsal nasal arteries have a relatively constant origin. Vertical (VB), oblique (OB), medial (MB) and lateral branches (LB) of the supraorbital artery were identified. The frontal branch of the superficial temporal artery (FBSTA) was found to continue in the direction of the scalp at the lateral orbital rim vertical line and gave off a transverse branch, the transverse frontal artery (TFA), to supply the forehead. The oblique branch of the supraorbital artery (OBSOA) most often anastomosed with either the transverse frontal artery or the frontal branch of the superficial temporal artery at the lateral orbital rim vertical line. A central artery (CA) was consistently found originating from the dorsal nasal artery usually 5mm from its origin. The central artery had a constant anastomosis with the opposite central artery in the inferior transverse third of the forehead. The central artery was not easily identifiable in the superior third of the forehead. The angular artery (AA) was found to have a variable termination. The angular artery could communicate with the supratrochlear artery (STrA) at the supraorbital rim (SOR) or it could continue up into the forehead medial to the STrA. This artery was called the paracentral artery (PCA). The central artery, paracentral artery and supratrochlear artery have an important relationship with the most prominent central vein that is relevant to flap construction. The significance of the central artery and vein favours the median forehead flap as anatomically superior and the prominent central vein is a constant landmark on which to select the side of the pedicle. Clear landmarks for defining the pedicle base for the median forehead flap are provided.

Arterial features of inner canthus region: confirming the safety for the flap design

The medial canthus represents a fixed-point fulcrum that is necessary for eyelid function. The aim of the study was to investigate the arterial distribution of the inner canthus. The origin, calibration, and branches of the inner canthus arteries and their topographical relations were examined by dissecting 19 cadavers, injecting red latex to their corresponding 38 nasal sections before the dissection. The distance from the dorsal nasal artery to the inner canthus was found to be 7.2 +/- 0.3 mm. In this study, the average diameter of the dorsal nasal artery was 0.74 mm on the right side and 0.88 mm on the left. Concerning the course of dorsal nasal artery on the lateral side of the nose, 4 types were observed. In most of the examples (44.7%), dorsal nasal artery anastomosed with angular artery via thick branch and gave off supplying branches to the medial canthus and to the lateral side of the nose. Dorsal nasal artery is a vessel of satisfactory size and is potentially a good vascular source for a thin free flap. It may be an ideal flap to reconstruct the eyelid defect for texture and color similarity of the inner canthus skin. A better understanding of the inner canthus vascularity should allow modification of reconstructive techniques and reduce postoperative complications.