Correlation between the 2-Dimensional Extent of Orbital Defects and the 3-Dimensional Volume of Herniated Orbital Content in Patients with Isolated Orbital Wall Fractures

BACKGROUND: The purpose of this study was to assess the correlation between the 2-dimensional (2D) extent of orbital defects and the 3-dimensional (3D) volume of herniated orbital content in patients with an orbital wall fracture. METHODS: This retrospective study was based on the medical records and radiologic data of 60 patients from January 2014 to June 2016 for a unilateral isolated orbital wall fracture. They were classified into 2 groups depending on whether the fracture involved the inferior wall (group I, n=30) or the medial wall (group M, n=30). The 2D area of the orbital defect was calculated using the conventional formula. The 2D extent of the orbital defect and the 3D volume of herniated orbital content were measured with 3D image processing software. Statistical analysis was performed to evaluate the correlations between the 2D and 3D parameters. RESULTS: Varying degrees of positive correlation were found between the 2D extent of the orbital defects and the 3D herniated orbital volume in both groups (Pearson correlation coefficient, 0.568−0.788; R²=32.2%−62.1%). CONCLUSIONS: Both the calculated and measured 2D extent of the orbital defects showed a positive correlation with the 3D herniated orbital volume in orbital wall fractures. However, a relatively large volume of herniation (>0.9 cm³) occurred not infrequently despite the presence of a small orbital defect (<1.9 cm²). Therefore, estimating the 3D volume of the herniated content in addition to the 2D orbital defect would be helpful for determining whether surgery is indicated and ensuring adequate surgical outcomes.

Concordant Surgical Treatment: Non-melanocytic Skin Cancer of the Head and Neck

BACKGROUND: Skin cancer is the most common type of cancer. Of the 4 million skin lesions excised annually worldwide, approximately 2 million are considered cancerous. In this study, we aimed to describe a regional experience with skin cancers treated by a single senior surgeon and to provide a treatment algorithm. METHODS: The medical records of 176 patients with head and neck non-melanocytic skin cancer (NMSC) who were treated by a single surgeon at our institution between January 2010 and May 2016 were retrospectively reviewed, and their data (age, sex, pathological type, tumor location/size, treatment modality) were analyzed. Patients with cutaneous squamous cell carcinoma (cSCC) who were classified as a high-risk group for nodal metastasis underwent sentinel node mapping according to the National Comprehensive Cancer Network guidelines. RESULTS: Among the patients with NMSC who were treated during this period, basal cell carcinoma (BCC; n=102, 57.9%) was the most common pathological type, followed by cSCC (n=66, 37.5%). Most lesions were treated by complete excision, with tumor-free surgical margins determined via frozen section pathology. Thirty-one patients with high-metastasis-risk cSCC underwent sentinel node mapping, and 17 (54.8%) exhibited radiologically positive sentinel nodes. Although these nodes were pathologically negative for metastasis, 2 patients (6.5%) later developed lymph node metastases. CONCLUSION: In our experience, BCC treatment should comprise wide excision with tumor-free surgical margins and proper reconstruction. In contrast, patients with cSCC should undergo lymphoscintigraphy, as nodal metastases are a possibility. Proper diagnosis and treatment could reduce the undesirably high morbidity and mortality rates.

Application of Rapid Prototyping Technique and Intraoperative Navigation System for the Repair and Reconstruction of Orbital Wall Fractures

BACKGROUND: Restoring the orbital cavity in large blow out fractures is a challenge for surgeons due to the anatomical complexity. This study evaluated the clinical outcomes and orbital volume after orbital wall fracture repair using a rapid prototyping (RP) technique and intraoperative navigation system. METHODS: This prospective study was conducted on the medical records and radiology records of 12 patients who had undergone a unilateral blow out fracture reconstruction using a RP technique and an intraoperative navigation system from November 2014 to March 2015. The surgical results were assessed by an ophthalmic examination and a comparison of the preoperative and postoperative orbital volume ratio (OVR) values. RESULTS: All patients had a successful treatment outcome without complications. Volumetric analysis revealed a significant decrease in the mean OVR from 1.0952±0.0662 (ranging from 0.9917 to 1.2509) preoperatively to 0.9942±0.0427 (ranging from 0.9394 to 1.0680) postoperatively. CONCLUSION: The application of a RP technique for the repair of orbital wall fractures is a useful tool that may help improve the clinical outcomes by understanding the individual anatomy, determining the operability, and restoring the orbital cavity volume through optimal implant positioning along with an intraoperative navigation system.

Semicircular Horizontal Approach in Breast Reduction: Clinical Experience in 38 Cases

BACKGROUND: Various techniques are used for performing breast reduction. Wise-pattern and vertical scar techniques are the most commonly employed approaches. However, a vertical scar in the mid-lower breast is prominent and aesthetically less pleasant. In contrast, a semicircular horizontal approach does not leave a vertical scar in the mid breast and transverse scars can be hidden in the inframammary fold. In this paper, we describe the experiences and results of semicircular horizontal breast reductions performed by a single surgeon. METHODS: Between September 1996 and October 2013, our senior author used this technique in 38 cases in the US and at our institution. We used a superiorly based semicircular incision, where the upper skin paddle was pulled down to the inframammary fold with the nipple-areola complex pulled through the keyhole. RESULTS: The average total reduction per breast was 584 g, ranging from 286 to 794 g. The inferior longitudinal pedicle was used in all the cases. The average reduction of the distance from the sternal notch to the nipple was 13 cm (range, 11-15 cm). The mean decrease in the bra cup size was 1.7 cup sizes (range, a decrease of 1 to 3). We obtained very satisfactory results with a less noticeable scar, no complication such as necrosis of the nipple or the skin flap, wound infection, aseptic necrosis of the breast tissue, or wound dehiscence. One patient had a small hematoma that resolved spontaneously. CONCLUSIONS: This technique is straightforward and easy to learn, and offers a safe, effective, and predictable way for treating mammary hypertrophy.

Clinical Experience of Matriderm(R) with Autologous Skin Graft in Full Thickness Burns

PURPOSE: The various skin substitutes for the reconstruction of full thickness skin defects after burn or excision of burn scars have been reported to reduce donor site morbidity and skin durability after skin graft. Last a decade, many skin substitutes have been frequently used for this purpose. Recently as one of dermal templates, Matriderm(R) (Dr. Suwelack Skin and Health Care AG, Billerbeck, Germany), a elastin-collagen complex, has been introduced. We present clinical experiences using Matriderm(R) for reconstruction of skin defects after burn. METHODS: We have experienced 8 cases of reconstruction of the full thickness skin defects of the acute burn wounds or burn scar contractures using Matriderm(R) in 6 patients. After insetting this dermal templates on the skin defects sites, simultaneously 8~12/1000 inch split-thickness skin grafts were over-grafted immediately. The rate of graft engraftment, appearance, rate of contractures, durability and sensibility of grafted area have been observed. RESULTS: The skin defects on face, hand, extremities were reconstructed and it's size were varied from 2x2 cm2 up to 8x2 cm2. The follow-ups varied between 4 months and 1.4 years. The rate of engraftment of Matriderm(R) site was mean 97.2% and it was relatively successful. The rates of contractures of graft site were ranged from 8 to 59.4%. In case of postburn scar contractures of lower lid, severe contractures was noted. After long follow ups, there were reduced sensation, no sweating on grafted area of Matriderm(R) sites. At post operative 6 weeks, on microscopic examination of H/E stain, thick fibrosis, fragmentation of foreign materials, and on Masson's trichrome stain, dermal sclerosis were shown, and no skin appendage structures was noted. After long follow ups, the appearance, pliability and durability of the grafted area showed relatively good. But sensory return was incomplete. By using relatively thin STSG, the morbidity of donor site could be reduced. CONCLUSION: In the cases of reconstruction of postburn skin defects due to burn and after release of burn scar contractures, we have used a dermal templates, Matriderm(R), and simultaneously relatively thin STSG have been done. After follow ups, Matriderm(R) site showed in good results in terms of the engraftment, pliability and durability. Further studies for clinical use should be imperative.