BACKGROUND: In @entity1 with a @entity5 , video-assisted thoracic surgery (VATS) is considered to be associated with more postoperative advantages compared to open procedures. However, open procedures are still preferred in cases with large or @entity5 . Therefore, in order to determine the appropriate surgical strategies for resection of @entity44 , we here review our experience with such cases. METHODS: Between January 2000 and February 2014, we experienced 132 @entity1 diagnosed with mediastinal @entity44 . By using data from a retrospective review of the @entity1 ' medical records, we compared the demographic characteristics, hospital stay duration, chest tube indwelling time, operative time, and mass size of the VATS group with those of the @entity1 in the open group. Moreover, we also analyzed the @entity260 and recurrence. Finally, based on our findings, we created a '   V (volume of the mass-volume of the cyst in the mass)' capable of determining the appropriate surgical strategy, measured by preoperative computed tomography scan. RESULTS: We excised the mass using VATS in 79 @entity1 , while 53 @entity1 underwent open procedures, including thoracotomy (n  =  10) and median sternotomy (n  =  43). The operative times, the hospital stay duration, and the chest tube indwelling time were significantly shorter in the VATS group compared to in the open group (Table  1). Four cases were converted to thoracotomy. The mean mass sizes were 6.53      2.20  cm and 8.58      3.45  cm in the VATS and open groups, respectively. The '   V' of the VATS group was higher than that of the open group. There were three @entity260 . Table  1 Comparison of the perioperative variables between the VATS group and open groups VATS (n  =  79) Open (n  =  53) p value Preoperative variables Age (years) 32.34          13.44 29.30      14.76 0.223 Female 63 28 0.001 BMI 22.07      3.34 22.59      3.91 0.409 ASA class 0.272 Class 1 39 21 Class 2 40 32 Mass size (cm) 6.53      2.20 8.58      3.45 <0.001    V (cm(3)) 988.15      1590.85 3093.22      4947.33 0.001 Intraoperative variable Operative time (min) 129      46 170      45 <0.001 Postoperative variable Hospitalization (days) 6.00      3.03 8.94      3.99 <0.001 ICU stay (days) 0 0.42      0.50 <0.001 CTD time (days) 2.00      1.24 3.8      3.63 <0.001 Median F/U duration (months) 47.16      43.60 27.52      34.00 The data are presented as mean      standard deviation VATS video-assisted thoracic surgery, CTD chest tube indwelling CONCLUSION: VATS for mediastinal @entity44 can be performed safely in selected @entity1 with large or malignant masses. The proposed '   V' appears to be a useful method for determining the appropriate surgical strategy in the large size @entity44 cases.

Clinical results of surgical resection of mediastinal XXXX : efficacy of video-assisted thoracic surgery.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity260 :: ('MESH:D011183', 'Disease') :: ['postoperative complications'] @entity5 :: ('MESH:D009369', 'Disease') :: ['mediastinal tumor', 'malignant tumors'] @entity44 :: ('MESH:D013724', 'Disease') :: ['teratoma', 'teratomas']
@entity44 :: (MESH:D013724,Disease) :: ['teratoma']
