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Acute colonic diverticulitis is one of the most common clinical conditions encountered by surgeons in the acute setting. Acute left colonic diverticulitis in the elderly presents with unique epidemiological features when compared with younger patients. Elderly patients have a lower risk of recurrent episodes, higher in-hospital and postoperative mortality. An international multidisciplinary panel of experts from the World Society of Emergency Surgery (WSES) formulated the guidelines for diagnosis and treatment of acute left colonic diverticulitis in the elderly (2022 edition). This article aims to interpret the guidelines statements on the following topics: diagnosis, management, non-surgical therapy and surgical technique.
急性结肠憩室炎是外科常见的急腹症。老年急性左侧结肠憩室炎与年轻患者相比，具有独特的流行病学特征，临床表现呈现较低的复发风险、较高的住院病死率和术后病死率。世界急诊外科学会国际多学科专家组发布了《老年急性左侧结肠憩室炎的诊治指南（2022年版）》，更新了老年急性左侧结肠憩室炎的诊断、非手术治疗和手术治疗方面的建议。.

BACKGROUND: Acute right-sided colonic diverticulitis (RCD) is a common disease in Asian populations for which the optimal treatment remains controversial. The aim of this study was to investigate management and evaluate long-term outcomes of treatment in patients with acute RCD.
METHODS: We retrospectively collected and analyzed clinical data for patients with acute RCD admitted to the Tongren Hospital, Shanghai Jiao Tong University School of Medicine from December 2015 to December 2020. The patients were divided into two groups, according to primary treatment strategy, which was either conservative treatment or surgical treatment.
RESULTS: A total of 162 consecutive patients with acute RCD were enrolled in the study. There was no significant difference in age, sex, history of abdominal surgery, medical co-morbidities, fever, previous history of RCD, treatment success rate and incidence of complications between the conservative and surgery groups. However, the recurrence rate in conservative groups was significantly higher than in surgery groups (16.53% vs 2.44%, P = 0.020). And more frequent bowel movements and previous history of RCD increased the risk of recurrence of acute RCD. Moreover, there was no significant difference in either treatment success rate or the overall recurrence rate between the patients with uncomplicated diverticulitis and patients with complicated diverticulitis.
CONCLUSIONS: Surgical treatment is also safe and effective for acute RCD. Surgical treatment should mainly be considered for patients with acute RCD with recurrence risk factors (more frequent bowel movements and previous history of RCD) or with complicated acute RCD.

Objective: Most patients with asymptomatic colorectal diverticulosis are easily overlooked. However, some of diverticulosis become diverticulitis, bleeding and even perforation, which cause extensive harm to patients. The purpose of this study is to analyze the incidence, clinical features, diagnosis and treatment of colorectal diverticulosis in order to improve the clinical understanding of diverticulosis and its related complications. Methods: A descriptive cohort study was carried out. Clinical data of 554 patients with colorectal diverticulosis confirmed by CT, colonoscopy, digestive tract radiography or operation in Peking University First Hospital from January 2009 to June 2019 were retrospectively analyzed. Patients with malignant tumors, autoimmune diseases, long term use of immunosuppressive drugs, chronic liver diseases and renal diseases, and mental disorders were excluded. The analysis parameters included gender, onset age, clinical symptoms, location of diverticulitis, treatment and prognosis. According to the criteria established by the World Society of Emergency Surgery (WSES), acute diverticulitis was divided into 5 stages based on the extension of the infectious process. Stage 0 was simple diverticulitis and stage 1-4 was complicated diverticulitis. Results: Among the 554 patients with colorectal diverticulosis, 358 (64.6%) were males, the median onset age was 63 years; 191 patients (34.5%) had various digestive symptoms, of whom 113 (20.4%) had chronic constipation and abdominal distension, 78 (14.1%) had chronic diarrhea and abdominal pain; the other 363 patients had no obvious abdominal symptoms. Four hundred and six patients were found by colonoscopy and 465 patients were found by CT. Twenty-five patients were diagnosed by lower gastrointestinal tract radiography and 3 were confirmed during operation. There were 339 patients with multiple diverticula (61.2%) and 215 patients with single diverticulum (38.8%). 76.5% (424/554) of diverticula were located in colon, 37.0% (205/554) in ascending colon, 21.3% (118/554) in multiple sites, and 2.2% (12/554) in rectum. The median diameter of diverticulum was 7 mm, and 78 cases (14.1%) was ≥30 mm. Forty-nine patients (8.8%) developed acute diverticulitis, including 13 patients with simple diverticulitis and 36 patients with complicated diverticulitis. Among 36 patients with complicated diverticulitis, 29 (80.6%) were males, 27 (75.0%) had recurrent abdominal pain and fever before onset; diverticula of 25 cases were located in sigmoid colon; 11 cases in ascending colon. Nine cases developed sigmoid colon perforation and 8 cases developed vesicocolonic fistula, and these 17 patients underwent surgical treatment. The other 19 cases with complicated diverticulitis developed gastrointestinal bleeding, of whom 18 cases were male, 11 cases were located in ascending colon; 13 cases were healed after conservative treatment, 4 cases received endoscopic hemostatic intervention, and 2 cases underwent surgery. Conclusions: Colorectal diverticulosis is more common in male patients, and CT and colonoscopy are main diagnostic methods. The symptoms of complicated colonic diverticulitis are related to the location of diverticulum. In addition to symptomatic treatment, surgical procedures are the most important treatments.
目的： 结直肠憩室病患者多数无临床症状，易被忽视；但其并发症如憩室炎、憩室出血甚至憩室穿孔对患者危害极大。本研究旨在分析结直肠憩室病的发病情况、临床特点和诊治方法，以为临床诊治憩室病提供参考。 方法： 采用描述性病例系列研究的方法。纳入北京大学第一医院于2009年1月至2019年6月期间收治的经CT、肠镜、消化道造影或经手术证实的结直肠憩室病554例患者的临床资料进行分析，排除伴有恶性肿瘤、自身免疫性疾病和长期服用免疫抑制性药物者、伴有慢性肝、肾功能衰竭者和认知功能障碍患者。分析指标包括患者性别、发病年龄、临床症状、病变部位、治疗方案以及转归。结肠憩室炎分级参照世界急诊外科学学会（WSES）制定的标准分为5级，0级为单纯性憩室炎；1~4级为复杂性憩室炎。 结果： 554例结直肠憩室病患者中，男性358例（64.6%），中位年龄63岁。191例（34.5%）伴有不同程度的消化道症状，其中113例（20.4%）慢性便秘和腹胀，78例（14.1%）为慢性腹泻和腹痛。有406例患者经结肠镜检查发现，465例经CT检查发现，25例经消化道造影检查发现，3例为术中发现。其中多发憩室339例（61.2%），单发憩室215例（38.8%）。病变位于结肠424例（76.5%），其中升结肠者205例（37.0%）；结直肠多部位118例（21.3%），直肠12例（2.2%）。憩室直径中位数7 mm，其中≥30 mm者78例（14.1%）。49例（8.8%）表现为急性憩室炎，其中13例为单纯性，36例为复杂性。36例复杂性憩室炎中，男性29例（80.6%），发病前反复发作腹痛伴发热27例（75.0%）；9例并发乙状结肠穿孔，8例并发乙状结肠或直肠上段憩室膀胱瘘，均予以手术治疗；另有19例临床表现为消化道出血，其中男性18例，病变位于升结肠者11例；13例经保守治疗后治愈，4例内镜下止血，2例手术。 结论： 结直肠憩室病以男性多见，CT和结肠镜为主要诊断方法。复杂结肠憩室炎的症状与憩室位置有关，除采取对症措施外，手术是主要的治疗手段。.

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BACKGROUND: Laparoscopic surgery develops rapidly in both elective and emergency settings. The study aimed to determine the role of different laparoscopic methods for the emergency treatment of complicated diverticulitis.
METHODS: MEDLINE, EMBASE, Science Citation Index Expanded, and the Cochrane database were searched up to November 2019 to identify all published articles related to the topic. Statistical analysis was performed using Stata 15.
RESULTS: Fourteen publications were included in the analysis. Laparoscopic surgery was applied in 425 patients, and 493 patients underwent open colon resection (OCR). Postoperative mortality, morbidity, severe complications, and reoperation rates were not significantly different between the laparoscopic and open surgery groups. Subgroup analysis was performed based on the different laparoscopic methods (laparoscopic colon resection [LCR] and laparoscopic lavage and drainage [LLD]). Subgroup analysis indicated that LCR was superior to OCR in terms of morbidity, while OCR was superior to LLD in terms of severe complications.
CONCLUSIONS: The safety of laparoscopic surgery for the emergency treatment of complicated diverticulitis is related to different surgical methods. LCR is suggested to be a better choice according to the postoperative outcomes. More definite conclusions can be drawn in future randomized controlled trials.