摘要:Purpose To investigate the value of non-segmental misty mesentery (NMM) in the diagnosis of different diseases on the multi-slice CT (MSCT),and to improve the diagnostic level.Materials and Methods Eighty patients displayed as NMM on CT and proved by pathology or follow-up were selected,including 25 cases of portal hypertension (PH),20 cases of non tuberculous peritonitis,15 cases of tuberculous peritonitis (TBP)and 20 cases of carcinomatous peritonitis (CP).The characteristics of NMM caused by different diseases were compared.Results Of 80 patients with NMM caused by different diseases,PH was easily displayed as grade Ⅰ NMM,acute pancreatitis often had prerenal fascial thickening,and TBP easily lead to high density (>20 Hu) MM.CP was more vulnerable to show grade Ⅲ NMM,parietal peritoneum mass and abdominal mass.There were 21 patients of PH with grade Ⅰ NMM,18 patients (85.71%) were more likely to occur in the mesenteric root.Intestinal wall thickening was seen at the ascending colon in 2patients with PH.There were 11 patients of CP displayed as perietal peritoneum tumor,7 patients (7/11,63.64%) in the right lower abdomen,2 (2/11,18.18%) in the anterior peritoneum and 2 (2/11,18.18%) around the parietal peritoneum.There were 9 patients of CP showed abdominal mass,5 (5/9,55.56%) were found in the right lower abdomen,2(2/9,22.22%) in the anterior lower abdomen,and 2 (2/9,22.22%) showed multiple lesions in the peritoneal cavity.Conclusion NMM can be caused by different reasons.Combined with other CT findings and clinical history would be helpful to make the correct diagnosis.%目的 探讨不同性质病变所致弥漫性肠系膜混浊征(NMM)的多层螺旋CT (MSCT)诊断价值,提高疾病的诊断水平.资料与方法 80例经手术病理或随访证实的非创伤、代谢类疾病患者,CT均表现为NMM,其中门脉高压症(PH)25例,非结核性腹膜炎20例,结核性腹膜炎(TBP) 15例,癌性腹膜炎(CP) 20例.观察不同性质病变所致NMM的特点.结果 80例患者中,PH易出现单纯NMM,肠系膜呈缆绳样增厚,可有少量小结节影(Ⅰ级NMM),急性胰腺炎易伴有肾前筋膜增厚;TBP易导致高密度(>20 Hu)肠系膜混浊征;CP易表现为NMM合并腹膜后间隙混浊,结节样增厚的网膜相互融合,形成网膜饼征(Ⅲ级NMM)、壁腹膜肿块和腹腔肿块.21例出现Ⅰ级NMM的PH患者中,18例(85.71%)以肠系膜根部混浊明显.2例PH出现肠壁增厚均发生于升结肠.CP出现壁腹膜肿块的11例患者中,位于右下腹部7例(63.64%),腹膜前壁2例(18.18%),周围壁腹膜2例(18.18%);CP出现腹腔肿块的9例患者中,位于右下腹部5例(55.56%),前下腹部2例(22.22%),多发于腹腔内2例(22.22%).结论 NMM可见不同病因所致肠系膜改变,结合CT其他征象和临床病史有助于明确病因诊断.