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In the article in question, two diagrams (the transverse tomogram and the longitudinal tomogram) are provided. The longitudinal tomogram shows the length of the gallbladder, which measures 7.5 cm. The transverse diameter measures 7 cm, and the vertical anteroposterior diameter measures 4 cm. Thus, the gallbladder has a length of 7.5 cm, a breadth of 7 cm, and an anteroposterior diameter of 4 cm. The volume would be calculated at 170 cc. The ultrasound clearly shows one stone, whereas at surgery two stones were found, each measuring 1.5×1.5×1.5 cm in size. One of the stones was in the ampulla of the gallbladder obstructing the flow of bile. This may account for nonvisualization of this stone on the ultrasound.At surgery, the surgeon described the gallbladder as huge, distended, and greenish in color, about 8 cm in diameter, and slightly edematous. The gallbladder wall was only slightly edematous but
Chandnani PC. Ultrasound and Diagnosis of Hydrops of the Gallbladder-Reply. JAMA. 1977;238(7):582. doi:10.1001/jama.1977.03280070021013
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