Dual arterial supply to normal lung: within the sequestration spectrum

Area of Science:

• Cardiovascular Anatomy
• Pulmonary Medicine
• Surgical Anatomy

Background:

• Understanding lung arterial supply is crucial for diagnosing and treating various cardiopulmonary conditions.
• Anatomical variations in pulmonary and systemic circulation can impact surgical planning and patient outcomes.
• The coeliac axis typically supplies the upper abdominal organs, not the pulmonary system.

Observation:

• A rare case of dual arterial supply to the left lower lobe was identified.
• The left lower lobe received its normal pulmonary arterial supply.
• An anomalous systemic arterial supply originated from the coeliac axis, targeting the basal segments of the left lower lobe.

Findings:

• This represents a unique instance of systemic arterial supply to the lung from the coeliac axis.
• The case presents with normal bronchial branching and pulmonary arterial supply, distinguishing it from other reported anomalies.
• Literature review confirms no prior reports of this specific anatomical variation.

Implications:

• This case highlights the importance of considering rare anatomical variations in diagnosing and managing thoracic conditions.
• Accurate identification of dual arterial supply is critical for interventional procedures and surgical interventions involving the lung.
• Further research into the embryological basis of such anomalies may provide deeper insights into vascular development.