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Year : 2018  |  Volume : 14  |  Issue : 2  |  Page : 134-139

Outcomes according to body mass index following laparoscopic surgery in patients with colorectal cancer

1 Department of Surgery, Chonnam National University Hospital, Gwangju, Korea
2 Department of Surgery, Korea University Anam Hospital, Seoul, Korea

Correspondence Address:
Prof. Seon-Hahn Kim
73, Inchon-ro, Seongbuk-gu, Seoul 02841
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jmas.JMAS_68_17

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Purpose: Body mass index (BMI) may not be appropriate for different populations. Therefore, the World Health Organization (WHO) suggested 25 kg/m2 as a measure of obesity for Asian populations. The purpose of this report was to compare the oncologic outcomes of laparoscopic colorectal resection with BMI classified from the WHO Asia-Pacific perspective. Patients and Methods: All patients underwent laparoscopic colorectal resection from September 2006 to March 2015 at a tertiary referral hospital. A total of 2408 patients were included and classified into four groups: underweight (n = 112, BMI <18.5 kg/m2), normal (n = 886, 18.5–22.9 kg/m2), pre-obese (n = 655, 23–24.9 kg/m2) and obese (n = 755, >25 kg/m2). Perioperative parameters and oncologic outcomes were analysed amongst groups. Results: Conversion rate was the highest in the underweight group (2.7%, P < 0.001), whereas the obese group had the fewest harvested lymph nodes (21.7, P < 0.001). Comparing oncologic outcomes except Stage IV, the underweight group was lowest for overall (P = 0.007) and cancer-specific survival (P = 0.002). The underweight group had the lowest proportion of national health insurance but the highest rate of medical care (P = 0.012). Conclusion: The obese group had the fewest harvested lymph nodes, whereas the underweight group had the highest estimated blood loss, conversion rate to open approaches and the poorest overall and cancer-specific survivals.


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