Patriquin H, Tessier G, Grignon A, Boisvert J
AJR Am J Roentgenol. 1985 Oct;145(4):693-6. doi: 10.2214/ajr.145.4.693.
The lesser omentum between the left lobe of the liver and the aorta at the level of the celiac axis harbors the left gastric vein and artery, lymphatics, nerves, and some fatty tissue. In one study, it was found to be thickened in most of 50 children with portal hypertension, but normal values were not established. Lesser omental thickness was measured in 150 children without systemic, liver, or renal disease, and it was found that it did not exceed 1.7 times the diameter of the aorta at the same level. Increased measurements were obtained in children with portal hypertension, obesity, or systemic steroid therapy (by fatty infiltration), preaortic lymphadenopathy, or with transient interposition of the gastric antrum or pancreas between the liver and aorta. In the absence of obesity or lymphadenopathy, a lesser omentum measuring more than 1.7 times the aortic diameter should raise the possibility of portal hypertension.
在腹腔干水平，位于肝左叶与主动脉之间的小网膜内含有胃左静脉和动脉、淋巴管、神经以及一些脂肪组织。在一项研究中，发现50例门静脉高压患儿中大多数的小网膜增厚，但未确定其正常值。对150例无全身、肝脏或肾脏疾病的儿童测量了小网膜厚度，发现其不超过同一水平主动脉直径的1.7倍。门静脉高压、肥胖或全身使用类固醇治疗（因脂肪浸润）、主动脉前淋巴结病，或胃窦或胰腺暂时位于肝与主动脉之间的儿童，小网膜厚度测量值增加。在无肥胖或淋巴结病的情况下，小网膜测量值超过主动脉直径1.7倍应增加门静脉高压的可能性。
