Clinical Analysis of Pectoralis Major Myocutaneous Flap for Reconstruction of Tissue Defects after Pharyngolaryngeal Cancer Surgery

Objective: To explore the methods and effects of pectoralis major myocutaneous flap in pharyngolaryngeal cancer surgery. Methods: Among 23 cases of pharyngolaryngeal cancer patients, the surgical procedure was based on pathologic conditions, and the surgical defects were repaired by pectoralis major myocutaneous flap. Results: Among 23 patients, there were 1 case of skin flap necrosis, 4 cases of pharyngeal fistula, 1 case of hypopharyngeal esophageal stenosis;except 1 case of pharyngeal fistula died of carotid artery rupture caused by infection, 1 case of hypopharyngeal esophageal stenosis required a gastric tube, and the rest patient’s swallowing function is normal. Conclusion: The blood supply of pectoralis major myocutaneous flap is reliable with the tissue volume enough for reconstruction. It turns out to improve patient survival and postoperative quality of life with the application of pharyngolaryngeal cancer surgery.

Occurrence and Characterization of Pale,Soft,Exudative-Like Broiler Muscle Commercially Produced in China

Pale, soft, exudative-like （PSE-like） broiler muscle is a growing problem for meat industry all over the world. However, limited studies have been made to assess broiler meat quality in China. The aim of this study was to investigate the characteristics and incidence of PSE-like broiler muscle commercially produced in China. A total of 1 274 Pectoralis muscles of Arbor Acre broiler were randomly obtained from the processing line to determine the commercial incidence of PSE-like muscle based on color. Furthermore, broiler Pectoralis muscles selected from the 1 274 muscle samples were classified as PSE-like muscle （L＊〉53, n=33） and normal muscle （L＊〉48 and L＊=53, n=33） to assess meat quality. It was determined that PSE-like muscle had lower muscle pH values, lower water-holding capacity （WHC）, lower sarcoplasmic protein solubility, and lower total protein solubility than the normal muscle did. SDS-PAGE profile also showed that bands of approximate 96 and 24 kDa in sarcoplasmic protein and myofibrillar protein varied between these two groups, suggesting partial denaturation of sarcoplasmic proteins and precipitation on myofillarments. Correlation analysis showed that L＊ values have significant correlation with WHC and protein solubility. Furthermore, the distribution of L＊ values exhibited a normal curve with range varying from 42.70 to 58.37. It was considered that approximately 23.39% of the population was PSE-like muscle. These results suggest that PSE-like meat can represent a significant portion of commercially processed broiler breast meat in China and that the L＊ value measurement could be used to sort broiler meat quality using a cut-off point.

Poland＇s syndrome in women： 24 cases study and literature review

Background Since its first description in 1841, numerous variations and treatments of Poland＇s syndrome （congenital deficiency of the pectoralis major muscle associated with brachysyndactyly） have been reported. None of the reports, however, involved female Chinese patients. Methods A retrospective study of 24 female patients was conducted to guide the selection of methods of surgical reconstruction. The patients were divided into three groups according to the degree of thoracic tissue development. Type I （mild）： Limited tissue loss which can be treated with simple filling with autologous fat and/or an artificial breast implant. Type II （moderate）： Moderate thoracic tissue hypoplasia where the breast parenchyma can still offer adequate implant coverage. Mammoplasty using a latissimus dorsi muscular flap with an implant was performed in this group. The flap was used to fill the infraclavicular hollow, and the implant was placed in the dual-plane pocket. Type Ⅲ （severe）： Severe thoracic tissue hypoplasia, without sufficient parenchyma to offer implant coverage. A latissimus dorsi muscular flap was used to form a total submuscular pocket in which an implant was placed. Results The numbers of Type Ⅰ, Ⅱ, and Ⅲ patients were 15, 3, and 6, respectively. All of the flaps and injected fat demonstrated good survival. Satisfactory cosmetic results were exhibited during the follow-up period of 1 to 9 years. Conclusions Although this group of patients showed varied conditions, they can be roughly divided into three types according to the degree of thoracic tissue development. In our experience, this classification is simple and useful in choosing the breast reconstruction options.