胸大肌肌皮瓣在头颈肿瘤术后组织缺损修复中的应用

目的总结胸大肌肌皮瓣在头颈肿瘤术后组织缺损修复中的应用。方法回顾性总结2 0 0 7年1月～2 0 1 0年1 2月收治的3 6例患者因头颈部肿瘤手术后巨大组织缺损应用胸大肌肌皮瓣进行修复的临床资料。结果 32例(88.9%)胸大肌肌皮瓣完全存活,4例(11.1%)胸大肌肌皮瓣远端部分坏死。经换药、口腔护理等对症支持治疗后愈合。结论胸大肌肌皮瓣是一种临床应用广泛的修复材料。它具有丰富的组织量和确切的血液供应,修复操作简单,易存活,适用于头颈部肿瘤扩大切除术后组织缺损的即刻修复。     

双岛胸大肌皮瓣在头颈肿瘤切除、重建术中的应用

目的 探讨双岛胸大肌皮瓣在头颈肿瘤术后组织缺损修复重建应用的效果及优点。方法 应用双岛胸大肌皮瓣,对头颈肿瘤术后组织缺损的8例患者进行修复重建。结果 重建后的咽腔无狭窄,颈部皮肤均成活。皮瓣I期愈合7例;皮瓣重建颈部皮肤面边缘轻度坏死1例,经处理后愈合。患者于术后8～12d(平均10d)开始进食;术后14～20d(平均16d)出院。结论 双岛胸大肌皮瓣血供丰富,组织量多,是同时修复头颈肿瘤术后皮肤、黏膜双重缺损的优选方法。     

Pulmonary atelectasis after reconstruction with pectoralis major flaps

Forty-four patients were reviewed to determine the incidence of atelectasis following pectoralis major myocutaneous flap reconstruction of head and neck defects. Patients underwent tumor resection with subsequent pectoralis major myocutaneous flap reconstruction (flap group, n = 24) or another major head and neck procedure (control group, n = 20). Chest roentgenograms taken on the first postoperative day were scored for atelectasis by preestablished criteria. Sixty-five percent of control and 70% of flap patients demonstrated postoperative atelectasis roentgenographically. The flap patients with skin paddles larger than 40 cm2 had a 60% incidence of major atelectasis compared with 5% in control patients. The skin island area was strongly correlated with the atelectasis score in the flap group. These results suggest that atelectasis is common following pectoralis major myocutaneous flap reconstruction of head and neck defects. As well, decreased chest wall compliance after primary closure of large donor defects may contribute to the atelectasis observed.     

改良的胸大肌岛状肌皮瓣在头颈外科的应用

目的 总结保护供区胸大肌功能和颈部外形美观的改良式胸大肌岛状肌皮瓣安全制作方法 .方法 采用改良的胸大肌岛状肌皮瓣修复头颈部缺损17例,其中6例复发性喉癌和下咽癌,4例下咽癌,3例舌根癌,2例复发性上颌窦癌,1例扁桃体癌,1例术后下咽癌术后咽瘘.术前超声检查标记胸肩峰动脉胸肌支走行,以胸肌支最下一个分支进入胸肌的起始位置(最下入肌点)和内乳动脉第四肋间穿支连线为轴设计单血管蒂的岛状肌皮瓣;在皮瓣顶部切口水平向外沿腋前线向上切开;保留胸内侧和部分胸外侧神经;维持胸大肌锁骨部完整,经锁骨上或锁骨下将肌皮瓣送到受区.结果 术中发现胸肩峰动脉胸肌支最下入肌点全部分布在胸肋部,该点距锁骨中点最下缘平均(4.9±1.2)cm(x±s,下同),术前超声定位最下入肌点的准确率为76.5%(13/17);内乳动脉的第四肋间穿支距离胸骨外侧缘(1.8±0.5)cm.17例胸大肌岛状肌皮瓣中,除1例下咽癌术中解离血管蒂时损伤血管放弃外,其余16例均成活,手术成功率为94.1%.术后1例舌根癌患者胸大肌远端与残舌分离,通过换药缝合后痊愈;2例出现术后咽瘘,均系放疗后复发下咽癌,换药后创面愈合.术后4周至3个月复查,胸大肌功能正常,颈部外形良好.结论 改良胸大肌岛状肌皮瓣不仅保留了胸大肌结构和功能,实现高位缺损的修复,还维持颈部和上胸部良好外观.术前超声检查标记胸肩峰动脉的胸肌支走行和最下入肌点位置有利于术中准确操作.     

头颈部岛状肌皮瓣和皮瓣的改良设计及临床应用

目的　探讨制作单一血管为蒂的头颈部局部带蒂肌皮瓣或皮瓣的安全性。方法　解剖学观察20例胸肩峰动脉分支,观察最远入肌点走行特征。通过术前超声观察和术中透视法观察定位最远入肌点,在最远入肌点上方1～2 cm断离肌肉,形成单纯动静脉血管为蒂的胸大肌岛状肌肌皮瓣。利用同样的技术方法,设计岛状的胸锁乳突肌、下位斜方肌的岛状肌皮瓣。结果　解剖学观察胸肩峰动脉分支分为单支型12.5%（5/40）,双支型67.5%（27/40）,多支型20%（8/40）。术前超声定位胸大肌皮瓣的最远入肌点成功率为29.1%（14/48）,DSA成功显影乳内动脉穿支66.7%（12/18）,共完成胸大肌岛状肌皮瓣48例,乳内动脉岛状皮瓣12例,颏瓣18例,下位斜方肌岛状肌皮瓣4例,胸锁乳突肌岛状肌皮瓣4例,颈横血管岛状皮瓣3例,胸肩峰动脉穿支的岛状皮瓣3例。失败2例,1例为胸大肌肌皮瓣的岛状设计中电刀误伤胸肩峰动脉胸肌支;1例为颈横血管浅支,术中修复扁桃体癌咽侧壁缺损。3例胸大肌部分坏死,清理完坏死组织,换药后痊愈。结论　在头颈部设计单一血管为蒂的岛状肌皮瓣（皮瓣）的改良设计安全可行,在受区皮瓣容易塑形固定,供区不仅外形美观且功能保全。     

带蒂胸大肌皮瓣在头颈部肿瘤术后缺损修复中的应用

目的:探讨运用带蒂胸大肌皮瓣修复头颈部肿瘤切除术后缺损的效果及优点。方法:13例晚期头颈部肿瘤患者,行肿瘤切除术后以带蒂胸大肌皮瓣修复术后缺损。结果:术后11例愈合良好;1例出现腮腺瘘,加压包扎后愈合;1例自动出院后失访。结论:胸大肌皮瓣修复头颈部肿瘤切除术后缺损,具有血供丰富、可修复较大面积缺损、术后愈合较好等优点。对延长患者生命,减轻病痛有重要作用。     

Two modifications of pectoralis major myocutaneous flap (PMMF)

Pectoralis major myocutaneous flap is the most commonly used versatile flap in head and neck reconstructive surgery. The use of entirely tubed pectoralis major myocutaneous flap for reconstruction of the hypopharynx following total laryngectomy and total pharyngectomy has a disadvantage of bulkiness of the flap and poor postoperative deglutition. One-stage reconstruction of the entire hypopharynx utilizing a combination of pectoralis major myocutaneous flap and dermal graft minimizes bulkiness, thus achieving satisfactory to excellent functional results. The operation has been performed on four patients with excellent deglutition. The pectoralis major myocutaneous flap is utilized to reconstruct the anterior and lateral walls of the hypopharynx, the dermal graft for the posterior wall as far superior as the vault of the nasopharynx. The operative procedure is described. Pectoralis major myocutaneous flap usually provides enough length to reach the distant site of the surgical defect. On occasion, however, additional length is desirable to avoid tension along the suture line. This becomes apparent when a random portion of elevated pectoralis major myocutaneous flap presents questionable viability which may require further trimming. Resection of the medial half of the clavicle can provide additional length of this flap by 2 cm to 2.5 cm.     

Pulmonary function after pectoralis major myocutaneous flap harvest

OBJECTIVE: The pectoralis major myocutaneous flap is widely used in the reconstruction of surgical defects in the head and neck region. Pulmonary atelectasis has been reported in patients undergoing these procedures, and many of these patients are heavy smokers and drinkers and have associated cardiopulmonary disorders. Flap harvest and donor site closure may lead to impairment of pulmonary function before and after the use of pectoralis major myocutaneous (PMC) in surgical reconstruction in patients with cancer of the head and neck. METHODS: Patients undergoing extirpation of head and neck tumors with PMC reconstruction were prospectively evaluated. Patient age, smoking history (pack-years), anesthesia duration, percentage predicted pre- and postoperative FEV1, percentage-predicted pre- and postoperative FVC (forced vital capacity), and preoperative SaO2 (oxygen saturation) were evaluated. Preoperative FEV1/FVC ratio was calculated. Chest x-rays were reviewed. RESULTS: Only 11 patients, 5 of whom smoked, could be evaluated postoperatively. Preoperative FEV1/FVC was more than 70 and FEV1 more than 75% predicted in all patients. A decrease in FVC was observed in 7 of the 11 patients, which ranged between 2% and 27% without any clinically obvious respiratory manifestations. A baseline SaO2 of more than 96% was noted in all patients. Four of 9 postoperative chest x-rays demonstrated atelectasis. CONCLUSIONS: PMC harvest and donor site closure may lead to the recorded decrease in FVC measurements. These changes did not manifest clinically. Nevertheless, alternative methods of surgical defect closure should be considered in patients with severe preexisting pulmonary disorders.     

Surgical techniques and results of lateral thoracic cutaneous, myocutaneous, and conjoint flaps for head and neck reconstruction

BACKGROUND: This paper aims at presentation of our surgical techniques and results of the lateral thoracic (LT) flaps for head and neck reconstructions. METHOD: There were seven LT cutaneous, seven LT myocutaneous, and two LT conjoint myocutaneous flaps for reconstruction of head and neck mucosal or cutaneous defects. RESULTS: The largest flap size was 22 cm x 13 cm. All donor sites were closed primarily. The highest point of reconstruction was in the nasopharynx internally and zygoma externally. All flaps survived without major complication. CONCLUSIONS: The LT flap has the versatility of cutaneous, myocutaneous, and conjoint flaps with pectoralis major or latissimus dorsi myocutaneous flaps to reconstruct large surgical defects. It has a large, reliable surface area, a long pedicle to reach nasopharynx and zygoma, and has less bulky muscle to facilitate tubular reconstruction of circumferential pharyngeal defect, one-stage operation, esthetic hidden donor site scar in axillary region, and minimal donor site morbidity. It is an additional reliable pedicle flap in our armamentarium for reconstruction of both cutaneous and mucosal defects in the head and neck region.     

Pectoralis major muscle flap in head and neck reconstruction

Pectoralis major muscle flaps have rarely been used on their own for head and neck reconstruction. Some of the problems experienced with myocutaneous flaps can be avoided by the judicious use of muscle flaps. These include suture line separation, excessive bulk, hair growth from the flap, and alteration of breast position. In contrast to the pectoralis major myocutaneous flap, the pectoralis major muscle flap is light and pliable. When it is employed for reconstruction in the oral cavity, oropharynx, or hypopharynx, it can be covered by a "quilted" skin graft or used on its own. We believe that pectoralis major muscle flaps provide a valuable alternative to the more bulky myocutaneous flaps in head and neck reconstruction.     

Fracture of the clavicle following the island type of pectoralis major myocutaneous flap for reconstruction of head and neck defect

Fractures of the clavicle following radical neck dissection (RND) and/or radiation therapy have been previously noted in the literature. Interestingly, we experienced three cases of clavicular fracture, which were considered to have resulted from pectoralis major myocutaneous flap (PMMCF). All of these three cases had received the combined treatment of RND, PMMCF and postoperative radiotherapy on the side of fracture. In all three cases, ipsilateral lower neck received 4,500 cGy and island type of PMMCF was used for reconstruction of surgical defect in head and neck area. All fractures noted between 1 and 3 years postoperatively occurred on the medial portion of the clavicle. Devascularization after stripping of periosteum and altered mechanics of the clavicle following resection of clavicular head of pectoralis major muscle may contribute to develop this rare complication in addition to the effect of radiotherapy and RND. We present three cases of the clavicle fracture following the island type PMMCF with a review of literature.     

Reconstruction of circumferential defect of the hypopharynx: Experimental studies and clinical application of a new method

Reconstruction of circumferential defect of the hypopharynx is a challenging problem in head and neck surgery. Reconstruction with a totally tubed pectoralis major myocutaneous flap (PMMCF) has been advocated in recent years, but this procedure has the disadvantage of excessive bulkiness. In order to solve this problem, the author experimented with a partially tubed platysma myocutaneous flap and an inner surface of apron skin flap of the anterior neck in the reconstruction of the circumferential defect of the hypopharynx in ten dogs. Subsequently, the same surgical technique using PMMCF instead of the platysma myocutaneous flap was used for reconstruction following total laryngopharyngectomy in eight patients. The new partially tubed flap was successful in solving the problem of excessive bulkiness of the totally tubed PMMCF.     

The pectoralis major flap.

The pectoralis major myocutaneous flap (PMC) is a major flap for reconstruction of large head and neck defects. Its principle advantages are its dependability and ability to cover large defects. It is, however, a bulky flap, preventing its use for delicate reconstruction. The PMC flap is justifiably a popular flap that will continue to command an important place in the head and neck surgeon's reconstructive armamentarium.     

Treatment of recurrent head and neck carcinoma involving the carotid artery: carotid reconstruction with ePTFE graft

The aim of our study is to investigate the feasibility of reconstructing the carotid artery using expanded polytetraflouroethylene (ePTFE) in patients with recurrent head and neck carcinoma involving the carotid artery. Ten patients, who had recurrent head and neck carcinoma involving the carotid artery, received carotid artery resection and reconstruction with ePTFE, tissue defects were repaired by pectoralis major myocutaneous flap. Results show that eight patients did not present any vascular and neurologic complications. One patient presented slight hemiparesis, another patient developed wound infection and pharyngocutaneous fistula. The mean follow-up period was 33.1 ± 16.0 months. The 2-year survival rate was 50% (5/10), and there was one patient who survived for 60 months without locoreginal recurrence or distant metastasis. En bloc resection of tumor and involved carotid-associated ePTFE reconstruction provide effective improvement in the locoregional control of the recurrent head and neck carcinoma. The pedicle pectoralis major myocutaneous flap can provide not only wound bed with affluent blood supply for the vascular grafts, but also reparation of skin or the tissue defects of oropharynx and hypopharynx.     

The double paddle pectoralis major myocutaneous flap

Many extended defects involving cover and lining about the head and neck can be rehabilitated by the double paddle pectoralis major myocutaneous flap. In this report, the flap, its technique of development, uses, and advantages are highlighted in 10 cases.     

Preliminary results in using the myocutaneous pectoralis major flap

The modified pectoralis major myocutaneous paddle flap has been used in 75 cases since 1982 for the closure of major defects of the oral cavity, oro- and hypopharynx and neck. Although almost all of the patients had a stage IV tumour, we had good aesthetic and functional results. There was no total flap necrosis. Three cases of partial necrosis underwent spontaneous healing. The details of the operative techniques are compared with other reconstructive methods, and the advantage of the pectoralis major flap is discussed.     

Enhanced Reliability and Renewed Applications of the Deltopectoral Flap in Head and Neck Reconstruction

Bakamjian introduced the deltopectoral skin flap in 1965, and thereafter it was used extensively for reconstructive surgery of the head and neck. Flap failure rates of 10% to 25% were reported, necessitating the development of alternative methods of reconstruction and eventually relegating the flap to historical references. Since 1991, we have used the deltopectoral flap in 24 patients for reconstruction after head and neck tumor surgery. Simple technical modifications have been used to enhance the reliability of this flap, with no observed failures or even partial flap loss. The deltopectoral flap remains a versatile and reliable tissue source that can be used simultaneously with the pectoralis major myocutaneous flap for a variety of complex head and neck reconstructions. Laryngoscope, 106:1230-1233, 1996     

Pectoralis major myocutaneous pedicled flap in head and neck reconstruction: retrospective review of indications and results in 244 consecutive cases at the Toronto General Hospital.

The pectoralis major myocutaneous pedicled flap (PMMPF) has been considered to be the "workhorse" of pedicled flaps for head and neck reconstruction, and several series of PMMPF procedures have been reported in the literature. Between 1983 and 1997, 244 reconstruction procedures using the PMMPF were carried out on 229 patients by the Otolaryngology-Head and Neck Surgery Department at the Toronto General Hospital. Pectoralis major myocutaneous pedicled flap reconstructions were completed after ablation of cancer in the following sites: oral cavity, 113; oropharynx/hypopharynx, 50; larynx, 59; and other, 21. The locations of reconstruction were oral cavity, 121; pharynx, 74; and neck or face, 50. Of the 244 cases, 202 were carried out as primary reconstructive procedures, whereas 42 flaps were "salvage" procedures (reconstruction after fistula, flap failure, osteoradionecrosis, and internal jugular vein rupture). Eighty-five cases (35%) were affected by complications such as dehiscence, infection, hematoma, seroma, partial flap failure, total flap failure, fistula, and donor site complications. The duration of admission for cases with complications was longer, and higher complication rates were associated with salvage procedures, number of comorbidities, number of pack-years of cigarettes smoked, and oral cavity reconstructions. This series of consecutive PMMPF procedures is the largest reported to date.     

Reconstruction of the hypopharynx with U-shaped pectoralis major myocutaneous flap after total pharyngo-laryngectomy

Resection of the whole circumference of the pharynx and esophagus is usually reconstructed with gastric pull-up, jejunum free graft or free forearm flap. The aim of this study was to assess the use of pectoralis major myocutaneous flap for closure of total pharyngeal defect. In 11 patients with hypopharynx and larynx cancer, total pharyngo-laryngectomy and excision of the cervical part of the esophagus and neck dissections were performed; the defects were closed with pectoralis major myocutaneous flaps. The skin island was sutured to prevertebral muscles, forming a letter U shape. Good healing was obtained in six patients, and five patients developed fistula that closed spontaneously within 3–4 weeks. The use of U-shaped pectoralis major myocutaneous flap, suturing it to prevertebral muscles, gives good functional results, and it is a simple and time-saving second choice method of reconstruction of the pharynx after total pharyngo-laryngectomy.     

The pectoralis major myocutaneous flap in head and neck reconstruction

The pectoralis major myocutaneous flap (PMMC flap) represents a landmark in the development of head and neck reconstructive surgery. After Stephan Ariyan first described its use for head and neck reconstruction in 1979, it has become tremendously popular and has revolutionised head and neck cancer surgery. Here, we present our initial experience with fourteen PMMC flaps in head and neck reconstruction. In most of the instances it was used for oral or oropharyngeal reconstruction. It was used for five other reconstructive tasks as well. Wound infection was the most common complication. There was no case of total flap loss. It has proven to be a reliable method of reconstuction in the head and neck.