Key result
Atypical pediatric HCM presents without overt LVH, featuring restrictive physiology and abnormal blood pressure responses.
Population
Pediatric hypertrophic cardiomyopathy presenting without overt left ventricular hypertrophy
Clinicians should consider atypical pediatric HCM despite absent LVH; this is hypothesis-generating and requires prospective validation.
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Zhang et al. (2026) studied this question. Atypical pediatric hypertrophic cardiomyopathy can present without overt left ventricular hypertrophy while exhibiting an abnormal blood pressure response and restrictive physiological features.
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