Isolated absence of the right pulmonary artery in a neonate: a rare but critical incidental diagnosis

This case underscores an uncommon presentation of <b>Pulmonary artery hypertension</b> which, to our knowledge, has <b>limited neonatal data</b>. Its atypical course reveals diagnostic pitfalls that, if unrecognized, may delay effective therapy. This report highlights options for early recognition and management. It serves as a reminder that clinicians should maintain vigilance for <b>a simple respiratory distress</b>, even in settings where it is not expected. Ultimately, this case adds to the limited literature and could influence practice by expanding differential diagnoses, refining diagnostic algorithms, or prompting guideline modifications in similar clinical scenarios.