Mach effect - mimicking pneumomediastinum

Case contributed by Mohammad Taghi Niknejad , 24 Nov 2012

Diagnosis not applicable

Changed by Frank Gaillard, 8 Feb 2016

Updates to Case Attributes

Suitable For Quiz was set to .

Age changed from 29 to 30 years.

Race changed from Middle eastern to .

Body was removed:

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~~Mach Effect :~~~~An optical effect at the margin between areas of slightly different density.In this image mimics a pneumo-mediastinum .~~

-<p><strong>Mach Effect :<br style="PADDING-BOTTOM: 0px; LINE-HEIGHT: 17px; BACKGROUND-COLOR: rgb(255,255,255); MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 'Helvetica Neue', Arial, Helvetica, sans-serif; COLOR: rgb(51,51,51); FONT-SIZE: 13px; PADDING-TOP: 0px"></strong>An optical effect at the margin between areas of slightly different density.<br style="PADDING-BOTTOM: 0px; LINE-HEIGHT: 17px; BACKGROUND-COLOR: rgb(255,255,255); MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 'Helvetica Neue', Arial, Helvetica, sans-serif; COLOR: rgb(51,51,51); FONT-SIZE: 13px; PADDING-TOP: 0px">In this image mimics a pneumo-mediastinum .</p>

Findings was changed:

~~see below~~Mach effect is an optical effect at the margin between areas of slightly different density.In this image mimics a pneumo-mediastinum .