Objective:To investigate the clinical effect and application value of free skin or auricle composite tissue transplantation in the correction of nasal alar retraction.Methods:From August 2019 to January 2023, a total of 45 patients with nasal retraction (7 males and 38 females) were treated in Shanghai United Regal Medical Cosmetology Hospital. Age ranged from 18 to 46 years, with a mean of 26.6 years. All patients had retroalar margin retraction caused by insufficient alar lining to varying degrees, with a retraction distance between 2-5 mm, with an average retraction distance of 3.3 mm. 11 cases of nasal flange retraction were corrected by free transplantation of composite tissue of auricle directly. The remaining 34 patients were corrected by alar border cartilage graft and free skin graft.Results:During 2-18 months of follow-up, 41 patients had satisfactory results and no obvious complications. Partial necrosis of free skin was observed in 2 patients, ischemic necrosis of complex flap of auricle was observed in 1 patient, and necrosis of free skin was observed in 1 patient. In addition to the above complications, 3 patients reported that the correction of alar retraction did not achieve the expected effect, but indicated that they were satisfied with the surgical effect, which was considered to be caused by skin contracture and other factors. The overall satisfaction rate of all patients was 91.1%. After follow-up and statistics, 41 patients in this group were satisfied with the results, with an overall satisfaction rate of 91.12%.Conclusions:The application of free skin graft (or auricle composite tissue) to correct nasal alar retraction has the advantages of simple operation, wide indications and accurate efficacy, and is worthy of clinical promotion.

Objective To evaluate the value of endorectal elastography with strain ratio to estimate local advanced rectal cancer after neoadjuvant radiochemotherapy.Methods In a retrospective study, endorectal ultrasound,endorectal elastography and enhanced rectal MRI were performed in 67 patients with local advanced rectal cancer after neoadjuvant radiochemotherapy.The imaging results were compared with postoperative pathological T stage and NCCN TRG.Results There was no significant difference in the diagnosis accuracy between T stage of ERUS(55.2%)and MRI(56.7%).Endorectal elastography results showed lesions confined to the rectal wall(T0-2 stage)were softer than lesions invaded the peripheral fat (T3)and the difference was statistically significant(P <0.05).When the cut-off point was set at SR<2.78,the sensitivity,specificity and accuracy of diagnosis of T0-2 were 64.7%,87.5% and 70.1% respectively.The lesion tended to have a greater SR value when residual tumor components increased(a higher NCCN TRG).Conclusions Endorectal elastography is an useful and effective imaging method to evaluate local advanced rectal cancer after neoadj uvant radiochemotherapy.It can help ERUS and rectal MRI to evaluate the lesions.