Department of Pathology, National Institute of Pediatrics, Mexico, DF CP 04830, Mexico.
J Pediatr Surg. 2010 Jan;45(1):E9-12. doi: 10.1016/j.jpedsurg.2009.10.048.
Polypoid arteriovenous malformations, which are localized in the colon, are extremely rare in adults, with only 7 cases published to date. Here we present the case of a 6-year-old girl with a jejunal polypoid tumor that a sonogram and a computed tomographic scan have shown to resemble intussusception. Histologically, numerous large ectatic veins intermixed with small-caliber arteries, venules, arterioles, and capillaries were observed in the intestinal wall. A retrospective computed tomographic scan 3-dimensional angiographic reconstruction demonstrated that this may be a diagnostic characteristic. Clinical and morphologic comparisons with previously reported cases were discussed.
息肉状动静脉畸形，局限于结肠，在成人中极其罕见，迄今为止仅报道了 7 例。本文报道了一例 6 岁女孩的空肠息肉样肿瘤，超声和 CT 扫描提示为肠套叠。组织学上，在肠壁中观察到大量大的扩张静脉与小口径动脉、小静脉、小动脉和毛细血管混合。回顾性 CT 扫描三维血管造影重建显示这可能是一个诊断特征。对与以往报道病例的临床和形态学比较进行了讨论。
