Abstract
Abstract Background The wall echo shadow (WES) triad, also known as the double-arc-shadow sign consists of a well-defined near wall, echos from stones immediately beneath the wall, and posterior shadowing caused by strong echoes from stones in the gallbladder fossa. It has been used for over 20 years as a nonspecific finding suggestive of a gallbladder lumen filled with either multiple stones or one large stone (Miller et al. J Emerg Med 30(1):69–74, 2006; Blaivas et al. Acad Emerg Med 10(6):1020–1023, 1999; Raptopoulos et al. AJR Am J Roentgenol 138(2):275–278, 1982). In the past, the WES triad has been correlated with underlying chronic cholecystitis. However, there are no studies that compare clinical findings to a gold standard such as surgical pathology. Case reports Three cases of the WES triad were reviewed at New York Medical Hospital of Queens over a 16-month period.
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