BACKGROUND: Laparoscopic resection of posterosuperior (PS) @entity5 of the liver is more difficult than that of anterolateral (AL) @entity5 , owing to the narrow surgical field in the PS location. In this retrospective cohort study, our aim was to determine if port insertion through the intercostal space would lead to improved outcomes for laparoscopic resection of @entity5 in PS liver segments 7 and 8. METHOD: Between January 2006 and December 2015, 153 @entity1 underwent laparoscopic resection of solitary @entity96 at Osaka Medical College Hospital. Of these, 107 @entity1 had @entity75 , and 46 had PS lesions. Of the 46 @entity1 with a PS lesion, 23 underwent an abdominal-only approach, and 23 underwent the intercostal trocar approach. Multivariate analyses were performed to investigate outcomes. RESULTS: Conventional abdominal-only laparoscopic resection of PS @entity96 resulted in prolonged surgical time (P = 0.031), increased @entity548 (P = 0.012), and a higher open conversion rate (P = 0.022) compared with @entity5 . Among @entity1 with @entity5 , the open conversion rate was significantly higher for those treated with the abdominal-only approach than with the intercostal trocar approach (P = 0.047). Appropriate surgical margins were obtained equally using the intercostal trocar approach (P = 0.648). There was no significant difference in occurrence of complications between the abdominal-only group and the intercostal trocar group. CONCLUSION: Using the intercostal trocar approach for PS @entity409 is a safe and effective method, which significantly reduced the open conversion rate compared with the conventional abdominal-only approach.

Intercostal Trocars Enable Easier Laparoscopic Resection of XXXX in Segments 7 and 8.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity548 :: ('MESH:D006470', 'Disease') :: ['bleeding'] @entity96 :: ('MESH:D008113', 'Disease') :: ['liver tumors'] @entity5 :: ('MESH:D009369', 'Disease') :: ['PS tumors', 'AL tumors', 'tumors'] @entity75 :: ('MESH:D001927', 'Disease') :: ['AL lesions'] @entity409 :: ('MESH:D008107', 'Disease') :: ['liver lesions']
@entity96 :: (MESH:D008113,Disease) :: ['Liver Tumors']
