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Different clinical features according to the anastomotic leakage subtypes after rectal cancer surgeries: contained vs. free leakages

 Eun Jung Park  ;  Jeonghyun Kang  ;  Hyuk Hur  ;  Byung Soh Min  ;  Seung Hyuk Baik  ;  Kang Young Lee  ;  Nam Kyu Kim 
 PLOS ONE, Vol.13(12) : e208572, 2018 
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BACKGROUND: Anastomotic leakage can be classified by free and contained leakage according to clinical manifestations. The risk factors and their comparison between these leakage subtypes are uncertain. This study aims to evaluate anastomotic leakage patterns and to compare clinical features between free and contained leakages after low anterior resection for rectal cancer.

MATERIALS AND METHODS: Between January 2005 and December 2012, a total of 2035 consecutive patients who underwent low anterior resection for primary rectal cancer were evaluated retrospectively at two-tertiary referral centers. The primary end points of this study were to assess detailed clinical features among leakage subtypes. The secondary end point was to compare risk factors between free and contained leakages.

RESULTS: Patients were subdivided into a no leakage group (n = 1890), free leakage group (n = 73), and contained leakage group (n = 72). Free leakage occurred more frequently in laparoscopic and robotic surgeries than open surgery (p = 0.015). On the other hand, contained leakage was developed in a higher rate of patients who received preoperative chemoradiotherapy (p<0.001). The mean development time was 4.6 days in the free leakage group, and 23.6 days in the contained leakage group. Patients with free leakage had a lower rate of a defunctioning stoma than contained leakage (5.5% vs. 29.2%, p<0.001). Risk factors for free leakage were smoking, tumor location, and laparoscopic surgery. However, tumor location and preoperative chemoradiotherapy increased the risk for contained leakage.

CONCLUSIONS: Contained leakage in rectal cancer surgery showed different clinical manifestations and risk factors compared to free leakage. It is necessary to pay more attention to patients with particular risk factors for anastomotic leakage subtypes.
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1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Jeonghyun(강정현) ORCID logo https://orcid.org/0000-0001-7311-6053
Kim, Nam Kyu(김남규) ORCID logo https://orcid.org/0000-0003-0639-5632
Min, Byung Soh(민병소) ORCID logo https://orcid.org/0000-0003-0180-8565
Park, Eun Jung(박은정) ORCID logo https://orcid.org/0000-0002-4559-2690
Baik, Seung Hyuk(백승혁) ORCID logo https://orcid.org/0000-0003-4183-2332
Lee, Kang Young(이강영)
Hur, Hyuk(허혁) ORCID logo https://orcid.org/0000-0002-9864-7229
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