Interruption of the right middle and lower lobe pulmonary arteries combined with arterial aneurysm formation at the origin of the right subclavian artery branch: a case report - Summary - MDSpire

Interruption of the right middle and lower lobe pulmonary arteries combined with arterial aneurysm formation at the origin of the right subclavian artery branch: a case report

  • By

  • Chengshi Hou

  • Guocheng Zhao

  • May 18, 2026

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Objective:

To report a rare case of interrupted pulmonary arteries in an adult and discuss its diagnosis and management, emphasizing the rarity of such cases.

Key Findings:
  • Congenital interruption of the right middle and lower lobe pulmonary arteries can mimic chronic pulmonary embolism, necessitating careful imaging evaluation.
  • Imaging is crucial for diagnosis, revealing collateral circulation and pulmonary hypertension, which are key to management decisions.
  • Conservative management is appropriate for asymptomatic patients, while those with complications may require interventional procedures; follow-up is essential.
Interpretation:

Early recognition of rare vascular anomalies like interrupted pulmonary arteries is vital for patient management and prognosis, impacting treatment decisions.

Limitations:
  • The case study is based on a single patient, limiting generalizability and potential biases in reporting.
  • Long-term outcomes of conservative management in similar cases are not well-documented, highlighting the need for further research.
Conclusion:

This case highlights the importance of imaging and individualized treatment approaches for patients with interrupted pulmonary arteries and associated complications, emphasizing the need for regular follow-up.

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