Quality of Life in Acute Complicated and Chronic Recurrent Left-sided Diverticulitis

Primary endpoints: Gastrointestinal Quality of Life Index (GIQLI) Secondary endpoints: SF-36 score (physical and mental health summary scores), LARS score, GIQLI-domains, anastomosis insufficiency and other complications, exitus and length of hospital stay Treatment strategy: A patient is coming into the hospital with acute symptoms of diverticulitis. The diagnosis must then be confirmed either with ultrasound or with a CT scan. After confirmation the patient is asked to be part of the study. At that point of time the patient does not know his randomization. After the patient's approval and signed consent the patients will bei informed about the further procedure and the appointment of surgery. Questionnaires will now be filled out and antibiotical treatment starts. If necessary a radiological intervention (drainage) is performed. Is the patient is randomized into Group A he will get early left hemicolectomy immediately up to a maximum of 2 days after 7-10 days lasting initial conservative or interventional treatment (e.g: antibiotics, analgesics, drainage). If the patient is in Group B he will receive an elective left hemicolectomy 6 to 8 weeks after 7-10 days lasting initial conservative or interventional treatment (e.g: antibiotics, analgesics, drainage). Reassessment of the questionnaires will bei done in both groups. Group A will be asked 6-8 after surgery and again 6-8 weeks after the second reassessment. Group B will be asked 6-8 weeks after discharge (directly before surgery) and again 6-8 weeks after surgery. The aim of the study is to evaluate the outcome and quality of life in patients receiving early surgery versus elective resection of the left-sided colon in acute complicated diverticulitis and chronic recurrent diverticulitis with acute exacerbation.