Summary of Background Data. During C1 lateral mass screw insertion and in posterior C1-C2 fixation, iatrogenic injury of C1-C2 venous sinus results in bleeding, which is troublesome.

在后路寰枢椎内固定术时C1侧块钉置入不当引起的C1 - C2静脉窦医源性损伤所致的术中出血处理起来较棘手。

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The common clinical manifestations were epigastralgia, obstructive jaundice, upper alimentary tract bleeding, abdomen mass and weight loss.

常见临床表现有上腹痛、黄疸、上消化道出血、腹胀或呕吐及体重下降等。

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On the bleeding edge of a global outbreak would be travel-related companies such as hotels and airlines, restaurants, mass transportation and nonessential retail shopping.

CNN: Pandemic equals economic pain