Infundibular Pulmonary Stenosis Differential Diagnoses

Updated: Nov 23, 2022
  • Author: Poothirikovil Venugopalan, MBBS, MD, FRCPCH; Chief Editor: Stuart Berger, MD  more...
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Diagnostic Considerations

Important considerations

Do not presume asymptomatic patients to have mild stenosis without detailed evaluation.

Avoid diagnosing mild stenosis because of the absence of pulmonary oligemia on chest radiography.

Avoid missing associated lesions, such as coexisting valve or supravalvar stenosis, ventricular septal defect, atrial septal defect, and hypoplasia of the right ventricle.

Avoid confusing pulmonary stenosis with double-outlet right ventricle.

Other problems to be considered

Consider the following conditions in the differential diagnosis in patients with suspected infundibular pulmonary stenosis:

  • Tumors of right ventricular outflow tract

  • Aneurysm of right coronary sinus

  • Right ventricular myxomas

  • Pulmonary artery stenosis (unilateral, bilateral, single or multiple, localized or diffuse)

  • Pulmonary artery branch stenosis

  • Left ventricular noncompaction [5]

  • Glycogen-Storage Disease Type I (Von Gierke disease)

Differential Diagnoses