older infants with ventricular hypertrophy , persistent pulmonary hypertension ( pphn ) , bronchopulmonary dysplasia ( bpd ) , and those with malformed hearts involving severe ventricular hypertension due to outflow obstruction or pulmonary hypertension may have imn , fibrosis , or dystrophic calcification alone or in combination .
C0020538
hypertension
C0020542
pulmonary hypertension