A Rare Pulmonary Artery Sarcoma Masquerading as Pulmonary Embolus

Area of Science:

• Cardiovascular Medicine
• Oncology
• Pulmonary Medicine

Background:

• Pulmonary artery sarcoma is a rare malignancy often presenting with symptoms mimicking pulmonary embolism.
• Early diagnosis and intervention are crucial due to the typically advanced stage at presentation and poor prognosis.

Observation:

• A 46-year-old woman presented with deteriorating cardiorespiratory function, presumed to be multiple unprovoked pulmonary emboli.
• Surgical intervention revealed an intimal soft tissue lesion in the right pulmonary artery, later diagnosed as sarcoma.

Findings:

• Pulmonary artery sarcoma can cause significant pulmonary vascular obstruction and right-sided heart strain.
• Surgical debulking is essential for improving ventilation-perfusion mismatching and relieving cardiac strain.
• Adjuvant chemoradiotherapy may improve median survival, with a median of 20 months reported.

Implications:

• This case highlights the importance of considering rare neoplasms in the differential diagnosis of unexplained pulmonary vascular obstruction.
• Aggressive surgical management combined with adjuvant therapy can lead to stable disease and potentially improved outcomes in pulmonary artery sarcoma.
• Further research into novel therapeutic strategies is warranted for this challenging malignancy.