{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:43:24Z","timestamp":1747183404535,"version":"3.40.5"},"reference-count":19,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2018,9,26]],"date-time":"2018-09-26T00:00:00Z","timestamp":1537920000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Asian J Endoscop Surgery"],"published-print":{"date-parts":[[2019,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Single\u2010incision laparoscopic cholecystectomy (SILC) is more challenging than conventional (multiport) laparoscopic cholecystectomy (CLC) because of the increased likelihood of instrument collision and the limited surgical workspace. In SILC, procedural difficulties may increase when the port\u2010to\u2010target distance is long. We aimed to assess the correlation between port\u2010to\u2010target distance and procedural difficulty.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty\u2010six consecutive patients who underwent SILC at our hospital were included in this study. The umbilicus\u2010to\u2010Calot's triangle distance (UCD) was measured intraoperatively. The correlations between the UCD and operative time were analyzed, and for comparison, CLC cases during the same period (<jats:italic>n<\/jats:italic>\u2009=\u200928) were similarly analyzed. Moreover, UCD was estimated from preoperative CT (UCD\u2010CT), and the usefulness of UCD\u2010CT was assessed during SILC and CLC.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Thirty\u2010four patients successfully underwent SILC. There were positive correlations between the UCD and pneumoperitoneum time. Multivariate linear regression analysis, including BMI and height, which were previously reported to have a correlation with longer operative time in SILC, showed that UCD is an independent predictive factor for prolonged operative duration. However, BMI and height were not independent predictive factors. UCD and UCD\u2010CT had a very strong positive correlation; therefore, UCD was estimated from CT. UCD\u2010CT had a strong positive correlation with operative time in SILC, but not in CLC.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>A longer UCD is an important predictive factor for difficult cases of SILC, but this finding is not applicable in CLC. The usefulness of UCD is specific to SILC.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ases.12652","type":"journal-article","created":{"date-parts":[[2018,9,27]],"date-time":"2018-09-27T06:08:30Z","timestamp":1538028510000},"page":"255-263","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Correlation between port\u2010to\u2010target distance and procedural difficulty in single\u2010incision laparoscopic cholecystectomy: An observational study"],"prefix":"10.1111","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0775-3390","authenticated-orcid":false,"given":"Masafumi","family":"Ohira","sequence":"first","affiliation":[{"name":"Department of Surgery National Hospital Organization Hokkaido Medical Center  Sapporo Japan"},{"name":"Department of Gastroenterological Surgery I Hokkaido University Graduate School of Medicine  Sapporo 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