Objective To investigate the efficacy and safety of photodynamic therapy (PDT) in the treatment of different types of rosacea,and to evaluate its benefit by comparing its efficacy with 10％ sodium sulfacetamide and 5％ sulfur emollient foam.Methods Forty-three subjects with rosacea were enrolled in this study.They were randomized to be treated with PDT (twenty-three subjects) or 10％ sodium sulfacetamide and 5％ sulfur emollient foam (twenty subjects).PDT group subjects received PDT once every seven to ten days for three times while the 10％ sodium sulfacetamide or 5％sulfur emollient foam was applied 2 times per day for thirty days in the other group.Digital photographs were taken before and after one month of treatment in both groups.Blinded independent physicians graded improvement based on these photographs utilizing a percentile evaluation scale.A more than sixty percent remission proved the treatment to be effective.All the complications occurred during the therapy were taken notes and their severity was classified by the subjects.Two dermatology life quality index forms were completed before and after treatment by the subjects to evaluate the change in terms of their quality of life.Results After one month of treatment,PDT proved to be effective on sixty-five percent of subjects (seventy-one percent on papulopustular rosacea and fifty percent on erythematotelangiectatic rosacea).The emollient foam proved to be effective on thirty-five percent of subjects.Statistically significant difference was observed between the overall effective rate of PDT and emollient foam (P＜0.05).In addition,a greater improvement in terms of the quality of life was experienced by the PDT group subjects.No irreversible adverse event was observed in both groups during the study.Conclusions PDT proves to be an effective and safe treatment for rosacea with satisfactory efficacy,significant improvement in patients' quality of life and few irreversible side effects.

Objective To investigate the changes in serum level of myocardial enzymes in patients with primary hypothyroidism and to evaluate the relationship between the level of those enzymes and clinical or experimental parameters.Methods We measured several myocardial enzymes in serum of 108 patients with primary hypothyroidism including 31 cases of Hashimoto's thyroiditis,28 cases of atrophic thyroiditis,24 cases of Graves' hyperthyroidism treated by 131I,and 25 cases of Graves' hyperthyroidism treated by antithyroid drugs,as well as 50 normal controls.Results All the myocardial enzymes,including creatine kinase(CK) and its isoenzyme CK-MB,aspartate aminotransferase(AST),lactate dehydrogenase(LDH) and its isoenzyme HBDH,especially CK,were elevated in serum of patients with hypothyroidism.In addition,significant negative correlations were found between CK and FT3,CK and FT4,CK-MB and FT3,CK-MB and FT4.No difference in enzyme level was found among different hypothyroidism groups.Conclusion Hypothyroidism may cause elevation of myocardial enzymes in serum of the patients.The degree of CK and CK-MB increase was associated with the severity of hypothyroidism,and thus can be regarded as indexes to determine the severity of hypothyroidism.

Objective:To explore the dynamic changes of three-dimensional morphology of laryngeal soft tissue and its clinical value in the unilateral vocal fold paralysis (UVFP) patients through dynamic CT scanning during the process from inspiration to phonation.Methods:From October 2017 to July 2019, a retrospective study was performed in 18 patients with UVFP (10 males and 8 females with the range of age from 29 to 75 years old) and 10 normal subjects (5 males and 5 females with the range of age from 25 to 58 years old) in Department of Voice-Otolaryngology Head and Neck Surgery, Section Two, Zhongshan Hospital Xiamen University. The laryngeal dynamic computed tomography (CT) of cine mode was performed. Ten dynamic sequence images of vocal folds movements were obtained during the process from inspiration to phonation. Based on the dynamic changes of glottic area and the displacement of cricoid cartilage. The above dynamic sequence images were divided into inspiratory phase and phonation phase as well as open phase and closed phase. The soft tissue parameters were measured respectively, including vocal folds length, width, thickness and subglottal convergence angle. Independent-sample t test was used to analyze between UVFP group and control group. Results:During the process from inspiration to phonation, the morphology of vocal folds in control group was relatively stable at inspiratory phase and closed phase in phonation. When open phase and closed phase of phonation were switching, the morphology of vocal folds changed obviously. The length of vocal folds became longer (1.19±0.10) mm, the width became wider (2.19±0.17) mm, the thickness became thinner (2.66±0.56) mm, and the subglottal convergence angle decreased (31.45±4.78)°. Compared with the controll group, in the open phase, the thickness and width of the vocal fold on affected side in the UVFP group were thinner ( t=10.25, P<0.001) and wider ( t=5.25, P<0.001).While in the closed phase, the subglottal convergence angle was larger ( t=4.41, P=0.001).The width of the healthy side vocal fold in the UVFP was wider ( t=2.54, P=0.026) than that in the control group. The differences in other parameters were not statistically significant. Conclusions:Dynamic laryngeal CT scanning provides a simple and non-invasive method for the objective and quantitative measurement of the dynamic changes of laryngeal morphology from inspiration to phonation. Compared with the control group, the characteristic dynamic changes among UVFP were observed during this particular process, which included changes of subglottal convergence angle and thickness of vocal muscle due to denervation. In addition, in UVFP group, the width of the vocal fold healthy side in the closed phase may be used to assess its compensatory function.