小儿消化道重复畸形核素显像特征

目的：探讨核素显像诊断小儿消化道重复畸形的影像特征及其意义。方法：^99Tc^mO4^-60min间断动态显像法。结果：16例核素显像诊断为消化道重复畸形患儿，其中8例为消化道重复畸形，4例Meckel憩室，4例为其他疾病，均经手术病理检查证实。结论：核素显像诊断小儿消化道重复畸形简便、有效，可为手术治疗提供重要诊断依据。     

小儿肠重复畸形的影像学表现

目的：分析小儿肠重复畸形影像学表现特征,提高术前诊断率。方法回顾性收集本院经手术治疗且有病理结果的8例小儿肠重复畸形患者,结合相关文献,总结其临床及影像检查资料。结果行超声检查8例,7例阳性;行 CT 检查7例,6例阳性;行 ECT 检查者6例,4例阳性;超声、CT、ECT 检查阳性率分别为87.5%、85.7%、66.7%,超声与 CT 联合、CT 与 ECT 联合阳性率均可达100%。结论超声、CT 及 ECT 对小儿肠重复畸形诊断有一定价值,都不具有特异性,选择合适检查方案对其明确诊断具有重要意义。     

Calcification associated with terminal defects of the upper extremity

Four children who had calcifications associated with terminal defects of the upper extremity are reported. A review of the literature has revealed no previous report. Moreover, an examination of the radiographs of 65 children who had terminal defects of the upper limb failed to show any such calcifications. The exact cause of this association remains unknown.     

Intraluminal duodenal diverticulum associated with trisomy 21.

An intraluminal duodenal diverticulum is an uncommon congenital abnormality that may produce intermittent ostruction. The true pathogenesis of this lesion is still disputed, but it probably results from ballooning of a congenital web or diaphragm with prolonged peristalsis. An intraluminal "wind sock"-like structure filed with barium and surrounded by a radiolucent halo is the classic and diagnostic radiologic appearance. An association with trisomy 21 is made.     

Membranous duodenal stenosis: initial experience with balloon dilatation in four children

INTRODUCTION: We present a novel approach to the treatment of membranous duodenal stenosis (MDS). To our knowledge this is the first paper to describe balloon dilatation for this entity. MATERIAL AND METHODS: Four children, 2 boys and 2 girls, aged between 8 and 28 days, underwent duodenal balloon dilatation. Balloon dilatation was performed under general anaesthesia using standard angiography balloons per os. Balloon diameters ranged from 6 to 14 mm. RESULTS: All balloon dilatations were successful. None of the procedures showed procedural or post-procedural complications. None of the patients subsequently required surgical intervention. To date all children are doing well. DISCUSSION: The initial experience with balloon dilation of MDS showed a 100% success rate, without procedural or post-procedural complications. The results obtained in this small group of patients suggest that the use of balloon dilatation in cases of MDS may be a safe technique that can be readily performed by an experienced interventional radiologist.     

肺部孤立结节钙化征象的HRCT评价

目的：本文旨在评价良恶性孤立结节（ＳＰＮＳ）的钙化征象在高分辨率ＣＴ（ＨＲＣＴ）上的差异。材料和方法：分析一组连续的资料，共５９例，其中４３例经病理学证实，１６例经临床诊断和随访明确。结果：３０例良性中的１２例（４０％），２９例恶性中的４例（１３石的）可见钙化征象（Ｐ＜０．０５）。钙化的形态有三种，１）结节状或斑炔状，２）点状，３）沙粒状。结节状或斑块状钙化是良性的特征。良恶性钙化分布不同，良性多位于中央，恶性则为偏心性的。ＨＲＣＴ所显示的１６例钙化中普通ＣＴ扫描仅显示３例。结论：ＨＲＣＴ上钙化征象多见于良性ＳＰＮＳ．但并非良性病变所特有，钙化对良恶性结节的鉴别有一定的参考价值。在钙化的显示上，ＨＲＣＴ明显优于普通Ｘ线及常规ＣＴ扫描。     

Calcification of the ligamentum arteriosum in children: a normal finding on CT

Calcification of the ligamentum arteriosum is a rare finding on plain radiographs. We commonly have seen the calcification on unenhanced CT scans of the chest, a finding not previously reported. A retrospective review of unenhanced CT scans of the chest was undertaken to determine the frequency of the described finding. Seven (13%) of 53 patients had a well-demarcated focus of calcification in the region of the ligamentum arteriosum. None of these patients had evidence of a patent ductus arteriosum. Calcification within the ligamentum arteriosum was seen in 13% of routine CT examinations of the chest in children and should not be confused with a pathologic process producing mediastinal calcifications.     

Uncomplicated portal venous gas associated with duodenal perforation following ERCP: CT features

Visualization of portal venous air in adults is usually an ominous sign of impending death. The case reported below demonstrates portal vein gas with a benign course in a patient with a duodenal perforation following endoscopic retrograde cholangiopancreatography.