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Ultrasound findings may show thickened gall bladder wall, tiny anechoic spaces (Rokitansky–Aschoff sinuses or RAS), and twinkling artifact (or comet-tail reverberation). Comet tail reverberation, which is due to reflections from cholesterol crystals, is a highly specific sign for adenomyomatosis. [8]
[4] [5] [6] Other key features that may be seen include wall thickening and ring-down artifacts known as "comet tails" (produced by reverberations of sound between the sinuses). [4] [5] [6] Ultrasound can also distinguish between diffuse, segmental, and localized variants of adenomyomatosis based on morphology. [5] [6]
This allows for the detection of a pneumothorax with the absence of normal ‘lung-sliding’ and ‘comet-tail’ artifact (seen on the ultrasound screen). Compared with supine chest radiography , with CT or clinical course as the gold standard, bedside sonography has superior sensitivity (49–99% versus 27–75%), similar specificity (95 ...
When a young New York boy was diagnosed with a rare genetic disorder, hope came in an unlikely form — a golden retriever named Yammy. His mother shares the inspiring story with Fox News Digital.
On abdominal ultrasound, sinking gallstones usually have posterior acoustic shadowing. In floating gallstones, reverberation echoes (or comet-tail artifact) is seen instead in a clinical condition called adenomyomatosis. Another sign is wall-echo-shadow (WES) triad (or double-arc shadow) which is also characteristic of gallstones. [40]
Features of benign lesion are: hyperechoic, having coarse, dysmorphic or curvilinear calcifications, comet tail artifact (reflection of a highly calcified object), absence of blood flow in the nodule, and presence of cystic (fluid-filled) nodule. However, the presence of solitary or multiple nodules is not a good predictor of malignancy.
The senior dog was surrendered to Saving Sage Animal Rescue last month after a series of unfortunate events. So many dogs have a story like Ammo's, but not all of them get a second chance at a family.
The once-in-a-lifetime comet will come within about 44 million miles (nearly 71 million kilometers) of our planet on Saturday and appear as a bright fireball with a long, extended tail.