Bubble Sign

Any of 3 radiologic signs related to accumulated gas in the upper GI tract in neonates 2º to atresias at different levels
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The double bubble sign indicates the presence of duodenal obstruction that can be caused by a number of intrinsic or extrinsic etiologies.
The bubble sign is visualization of metal outlining the joint.
I know, China has kept its foot on the gas of its stimulus package too long and there are bubble signs in housing and labor is no longer limitless, with resultant inflationary pressure.