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Positions of the probe at the proximal third of the biceps brachii muscle in the short axis view (a). The corresponding ultrasound images confirm the superficial localization of both the hydrated calcium deposit (red arrow) and the crystalline portion (white arrow). Of note, the peri-calcific edema (*) surrounding the hydrated component is not visible in the distal segment of the biceps brachii muscle (b–d). H humerus, BB biceps brachii
