Prevalence, factors associated, and histological pattern of incidental enlarged mesenteric lymph nodes among patients undergoing laparotomy at referral hospitals in central Tanzania; a cross-sectional study

坦桑尼亚中部转诊医院接受剖腹探查术患者中偶然发现的肠系膜淋巴结肿大的患病率、相关因素及组织学模式：一项横断面研究