Left upper lobectomy for a large incidental simple arteriovenous malformation

Area of Science:

• Cardiology
• Thoracic Surgery
• Pulmonary Medicine

Background:

• Pulmonary arteriovenous malformations (PAVMs) are abnormal connections between pulmonary arteries and veins.
• PAVMs often present in symptomatic individuals, with therapeutic embolization being a common initial treatment.
• This case highlights an incidental PAVM discovery in an asymptomatic patient.

Observation:

• An incidental finding of a large, diffuse PAVM in the left upper lobe was noted.
• The patient, a young woman, was asymptomatic but exhibited signs of hypoxemia, including cyanosis, exertional dyspnea, polycythemia, and low oxygen saturation.
• Further investigation confirmed the extensive nature of the central left upper lobe PAVM.

Findings:

• Surgical intervention via upper lobectomy was performed.
• The patient experienced a rapid and complete recovery post-surgery.
• Normal peripheral oxygen saturation levels were restored immediately after the procedure.

Implications:

• Surgical lobectomy can be a curative option for large, asymptomatic PAVMs.
• Early diagnosis and intervention are crucial for managing PAVMs and preventing complications.
• This case highlights the importance of investigating hypoxemia even in seemingly asymptomatic individuals.