Colon Cancer After One Anastomosis Gastric Bypass: a Case Report
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LETTER TO THE EDITOR
Colon Cancer After One Anastomosis Gastric Bypass: a Case Report Hamed Atarodi 1 & Reza Karami 1 & Ebrahim Aghajani 2 & Mohammad Kermansaravi 3,4
&
Abdolreza Pazouki 3,4
Received: 11 October 2020 / Revised: 11 October 2020 / Accepted: 15 October 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Introduction Evaluation within the development of gastrointestinal (GI) cancers after bariatric surgery is vital. Most of the studies conducted so far are that the surgery leads to a decrease in GI cancer incidence [1–3]. However, some studies demonstrated contrariwise results, and the surgery has led to an increase in the GI cancer incidence [4]. The leading etiology considered to lower the risk of GI cancer, in morbid obese patients, is weight loss and decrease in systematic inflammation [5]. The probable reason for increased risk of colon cancer incidence is local mucosal changes [4]. Nowadays, one anastomosis gastric bypass (OAGB) is an established bariatric surgical procedure which is promoted worldwide. Studies have shown excellent weight loss outcomes and long-lasting improvement in comorbidities following OAGB [6]. As this operation becomes more frequent, complications become more evident and observable. A rare complication * Mohammad Kermansaravi [email protected]; [email protected] Hamed Atarodi [email protected] Reza Karami [email protected] Ebrahim Aghajani [email protected] Abdolreza Pazouki [email protected] 1
Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
2
Department of Surgery, Aleris Hospital, Fredrik Stangs gate 11-13, 0264 Oslo, Norway
3
Minimally Invasive Surgery Research Center, Division of Minimally Invasive and Bariatric Surgery, Department of Surgery, Rasool-e Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
4
Iran National Center of Excellence for Minimally Invasive Surgery Education, Iran University of Medical Sciences, Tehran, Iran
following OAGB is the development of colorectal cancer (CRC); this may occur due to anatomical and physiological changes after the gastric bypass procedure [4]. We describe a patient who developed colon cancer 3 years after OAGB.
Case Presentation A 44-year-old woman underwent laparoscopic OAGB at our center with a body mass index (BMI) of 42 kg/m2. Post-surgery uneventful follow-up sessions were conducted for 3 years. In the third year following surgery, her BMI reached 30 kg/m2, and she started suffering from vague abdominal pain without nausea and vomiting. The pain was non-positional and dominant in preumbilical and hypogastrium region. She mentioned changes in bowel habit as new onset constipation without rectal bleeding. Physical examinations did not reveal any pathologic finding. She had no remarkable problems in her past medical history but had underwent hysterectomy and laparoscopic cholecystectomy; she also took a multivitamin mineral capsule daily. She was not a smoker nor alcohol drinker. In her family his
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