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(A–D) Serial echocardiography imaging with septal size dimension and z-score in parentheses: A. Baseline echocardiogram performed at age 4 months for follow up of small conoventricular VSD (5.2 mm; z = 0.5). B. Echo performed on illness day 6 (6.5 mm; z = 1.5). C. Echo performed on day 23 of illness (11 mm, z = 7.5). D. Echo performed 75 days after onset of symptoms demonstrating complete resolution of septal thickening (4.7 mm; z = −1.0).
