Resuming Oral Feeding in Patients With Oral Squamous Cell Carcinoma With Free Anterolateral Thigh Flap Reconstruction.

BACKGROUND: Quality of life and functional improvement have emerged as important goals for patients with oncologic disease. For patients with head and neck cancer, free anterolateral thigh (ALT) flaps serve as reliable reconstruction and provide functional restoration. Nevertheless, factors affecting the resumption of oral feeding are rarely described. This study aimed to evaluate and compare the functional outcomes of oral feeding for patients with different oncologic defect patterns and reconstructive ALT flap designs. METHODS: We retrospectively reviewed patients with head and neck cancer undergoing oncologic ablation and free ALT reconstruction between January 2016 and April 2018 at National Taiwan University Hospital. Patients were categorized into 2 groups as through-and-through (T&T) and non-through-and-through (non-T&T) according to the defect pattern. We further subgrouped T&T patients into lip resection/lip sparing according to lip involvement. Reconstructive ALT flaps were of 2 designs, folded (F-ALT) and chimeric (C-ALT). Outcomes of oral feeding were analyzed using descriptive statistics, and differences between groups were compared using the Student t test. RESULTS: We identified 233 patients who received oncologic ablation and free ALT flap reconstruction. There was no significant difference in functional recovery between the T&T and non-T&T groups (81.2% vs 73%, P = 0.137). However, among patients who succeeded in resuming oral feeding, lip-sparing patients had better functional recovery in terms of early oral feeding within 6 months and nasogastric tube removal compared with lip-resection patients (100% vs 83.3%, P = 0.001). Moreover, the F-ALT design resulted in a higher success rate in resuming oral feeding compared with the C-ALT design (90.5% vs 54.6%, P = 0.032). CONCLUSIONS: Patients with head and neck cancer with T&T defects were associated with higher rates of secondary flap revision and a trend of delayed oral feeding. In the long term, improved oral feeding outcome with the F-ALT design was observed compared with the C-ALT design in the specific group with T&T defect.

Treatment and long-term follow-up of oral cancer postoperative sialorrhea with dermal sling operation.

INTRODUCTION: Reconstruction of a full-thickness defect that includes oral commissure presents a considerable challenge to maxillofacial and plastic surgeons. The goals of reconstruction are both functional and cosmetic. Sialorrhea, or drooling, is a major problem after flap reconstruction and influences the quality of life of the patient. In this article, we report on our experience performing a dermal sling operation to treat postoperative sialorrhea in patients with oral cancer. MATERIALS AND METHODS: Preoperative and postoperative levels of sialorrhea were evaluated based on the Drooling Severity and Frequency Scale. Dermal sling operations were performed on 27 patients from January 2000 to December 2013. In these patients, 12 cases were reviewed and followed up over 1 year. RESULTS: Of the 12 patients, 11 were men and one was a woman, with the mean age of 58 years (range, 40-79 years). There were no operative complications. The mean preoperative score was 4.75 (range, 3-7), and the mean postoperative score was 3.83 (range, 2-5). This change was significant (P=0.005), with valuation with the Wilcoxon signed rank test. The mean time of follow-up was 3.5 years (range, 1.1-7.7 years). CONCLUSIONS: The dermal sling operation is an acceptable treatment for postoperative sialorrhea in patients with commissure-involved oral cancer.

Reconstruction for osteoradionecrosis of the mandible: superiority of free iliac bone flap to fibula flap in postoperative infection and healing.

BACKGROUND: Osteoradionecrosis (ORN) of the mandible is not an uncommon complication after radiotherapy for head and neck cancers. Although definitive treatment has been confirmed as radical excision of the necrotic bone with simultaneous vascularized osteocutaneous flap reconstruction, it remains a unique challenge. In this study, we compare our results of reconstruction with free iliac and fibula flaps in flap survival, bony union, and postoperative complications. PATIENTS AND METHODS: From 1986 to 2011, there were 153 mandibular ORN cases in our center that were treated with radical resection of the necrotic bone and reconstruction with either vascularized iliac (n=108) or fibula flaps (n=45). Data collected for analysis included patient demographics, flap survival rate, postoperative infection rate, nonunion/malunion rate, mean hospital stay, and antibiotics use. RESULTS: All patients healed eventually without recurrence of ORN. However, we observed difference in the complication rate between the iliac flap group and fibula flap group. In the group with iliac flap reconstruction, patients required less days of hospital stay for intravenous antibiotics treatment postoperatively. The average days required for intravenous antibiotics in the iliac flap group were 10.46 (2.28) versus 16.09 (3.88) days in the fibula group (P<0.01). In the group with fibula flap reconstruction, 9 (20.0%) patients had subsequent neck infection due to healing problem, compared to 8 (7.4%) patients in the iliac flap group (P=0.04). In the iliac flap group, the nonunion and malunion rates were 4.6% and 2.8% respectively; whereas in the fibula group, the rates were 15.5% and 6.6%, respectively (P=0.04 and 0.36, respectively). CONCLUSIONS: For ORN patients, vascularized iliac bone flap provides more reliable results compared to fibula flap. The merits of vascularized iliac flap include the following: (1) its natural curve mimics the shape of mandible and does not need osteotomy; (2) it offers more volume of bone that matches better to the native mandible to allow later osteointegration as well as faster bony union, due to the nature of being a membranous bone; and (3) it carries more abundant soft tissue to obliterate possible dead space. The only disadvantages are short pedicle and requiring special management of skin paddle, which can be overcome by training in microsurgery.

A modified free chimeric osteocutaneous fibular flap design for head and neck reconstruction: experience on a series of 10 cases.

BACKGROUND: We have previously described a modified chimeric fibular osteocutaneous flap design based on a combination of a traditional fibular flap and a peroneal artery perforator fasciocutaneous flap for mandible and adjacent soft tissue reconstruction. The purpose of this article is to share our experience with a larger case series utilizing this new technique for mandible and adjacent soft tissue reconstruction after cancer wide excision surgery and a more detailed description on these flaps harvesting procedures. PATIENTS AND METHODS: Ten patients (age range from 32 to 63 years), who had segmental defect of mandible and adjacent soft tissue defect after cancer wide excision surgery, received mandible and adjacent soft tissue reconstruction based on the modified chimeric fibular flap design. RESULTS: The skin paddle based on peroneal perforators ranged from 9 cm × 3.5 cm to 10 cm × 10 cm and the mean pedicle length was 8.9 cm. Four patients underwent primary closure of the donor site. Three flap salvage procedures were performed due to vascular thrombosis and all flaps survived well. Nine patients had acceptable outer appearance, and one patient complained of cheek sunken. All patients had at least 3-cm interincisor distance during a mean of 12-month follow-up period. CONCLUSION: The modified chimeric osteocutaneous fibula flaps were feasible design with few intermuscular septum problems during bone fixation. Furthermore, it provided larger skin paddles with few restrictions to reconstruct the cheek skin defect.

New modified free chimeric fibular flap design for head and neck reconstruction.

BACKGROUND: The free fibular osteocutaneous flap is a commonly used flap for mandible and buccal mucosa reconstruction in head and neck cancer surgery. However, the skin paddle restriction from the intermuscular septum often limits the soft tissue reconstruction. METHODS: We have proposed a new modified chimeric fibular osteocutaneous flap design based on the combination of a traditional fibular flap and a peroneal artery perforator fasciocutaneous flap to overcome the restriction from intermuscular septum. RESULTS: We successfully applied this modified chimeric free fibular osteocutaneous flap design to 2 patients after buccal cancer wide excision surgery. CONCLUSION: The modified free chimeric fibular flap can be easily applied to a segmental defect over the mandible and adjacent soft tissue without restrictions between the bone and the skin paddle. Furthermore, this skin paddle design can also serve as an extra skin paddle to reconstruct an outer cheek skin defect.

Quantitative relationship between vascular kinking and twisting.

A wide variety of factors causing vascular thrombosis in the microvascular free flap reconstruction have been encountered. The most frequent situation in our experiences has been vascular kinking because of improper positioning. It has been reported that the best way to avoid kinking is to place the vessels at a neutral axis. However, curving the pedicles to match the recipient vessels cannot be avoided, especially in head and neck reconstruction with a large flap and long pedicle. According to our clinical experiences, the curved vascular pedicle needs rotation in its axis from the neutral position to avoid kinking. Furthermore, we noted that the number of loops equals the number of axial rotations of 360°. We propose that these experiences and ideas can have wide applications in various fields of vascular surgery.

Microvascular head and neck reconstruction in patients with liver cirrhosis.

BACKGROUND: The aim of this retrospective case series was to review the safety, complications, and outcomes of free-tissue transfer in head and neck cancer reconstruction in patients with liver cirrhosis. METHODS: A retrospective review of all microvascular head and neck reconstruction cases with concomitant liver cirrhosis treated in our institution from 1994 to 2005 was performed. Data collected included patient demographics, etiology, and severity of liver cirrhosis, defect site, choice of free flap, complications, and clinical follow-up. RESULTS: Seven patients were identified. They were all males and underwent microvascular head and neck reconstruction due to ablative cancer surgery. Their Child-Pugh classification of liver cirrhosis was graded as follows: Child A (n = 3); Child B (n = 3); and Child C (n = 1). Eight free flaps were transferred (1 patient received 2), including anterolateral thigh (n = 4); radial forearm (n = 3); and fibula (n = 1). All flaps survived without the need for any microvascular revision procedures. Two patients died within postoperative 30 days due to hepatic decompensation. Other complications included neck hematoma (n = 1), neck wound infection (n = 2), and donor site dehiscence (n = 1). Only 2 patients with Child A cirrhosis remained free from complications and survived more than 1 year after the surgery. CONCLUSION: Microvascular head and neck reconstruction may be performed in patients with liver cirrhosis with a certain degree of technical success. However, the procedure is associated with significant mortality and morbidity in Child class B and C patients. Therefore, we recommend avoiding free-tissue transfer in patients with head and neck cancer with advanced liver cirrhosis.

Nosocomial infection of Aeromonas hydrophila presenting as necrotizing fasciitis.

Aeromonas hydrophila is infrequently reported as a causative organism of necrotizing fasciitis. We report a case of necrotizing fasciitis due to A. hydrophila in a 44-year-old man with Marfan syndrome who underwent valve replacement surgery twice. He was admitted due to a 2-day history of fever. The fever was attributed to hepatitis, and ingestion of herbal medication was suspected to be the cause. The fever relapsed on the 28th day of hospitalization with rapidly progressive erythematous patches on the bilateral lower extremities. Septic shock developed within a few hours, and 2 small diagnostic incisions on the skin lesions suggested necrotizing fasciitis. Surgical exploration further revealed extensive necrosis of the subcutaneous tissue and fascia, but the muscle was spared. Blood cultures and cultures of the debrided tissue all yielded A. hydrophila. Pathological examination showed necrosis and degeneration of the soft tissue. Although appropriately managed with broad-spectrum antibiotics, fasciotomies and debridement, the patient's condition deteriorated rapidly and resulted in death 11 hours after the surgery. This case indicates that A. hydrophila can be a causative organism of nosocomial necrotizing fasciitis.