A narrowing of the right ventricular outflow tract that can occur at the pulmonary valve (valvular stenosis), below the pulmonary valve (infundibular stenosis), or above the pulmonary valve (supravalvar stenosis). The phenotype is Human Phenotype Ontology entry HP_0001642 (Pulmonic stenosis). Also known as: Narrowing of pulmonic valve, Pulmonary stenosis, Pulmonary valve stenosis, Pulmonic valve stenosis.