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Fig. 1. —26-year-old woman in 11th week of pregnancy with right lower quadrant pain and clinical suspicion of appendicitis. Coronal T2-weighted image shows inflamed appendix (arrow). At base of appendix, rounded intraluminal structure without signal intensity (white arrowhead) is seen, representing appendicolith, which was confirmed by surgery and pathology. Fetus (black arrowheads) is clearly visible.