Key result
Pulmonary endarterectomy for primary PA angiosarcoma precedes fulminant recurrence and systemic metastases within 9 days.
Why the study?
Primary pulmonary artery angiosarcoma is an exceptionally rare and aggressive malignancy with poor prognosis that is often misdiagnosed as pulmonary thromboembolism.
Case Report (n=1)
Primary pulmonary artery angiosarcoma can exhibit fulminant regrowth within days of surgical resection, highlighting the need for accurate diagnosis and potential systemic therapy.
Should not change practice based on one case; leaves open optimal multimodal strategies for this rare tumor.
Primary pulmonary artery angiosarcoma (PAAS) is an exceptionally rare and aggressive malignancy often misdiagnosed as pulmonary thromboembolism (PTE). PAAS typically exhibits aggressive biological behavior, with rapid local invasion, early recurrence, and distant metastasis, and the prognosis of PAAS remains extremely poor. We report the case of PAAS initially misdiagnosed with PTE, demonstrating its rapid postoperative recurrence within days after tumor resection and aggressive progression with pulmonary and systemic metastases. This case underscores the importance of avoiding misdiagnosis as PTE, which may delay definitive treatment and facilitate disease progression. It also highlights how rapidly residual tumor cells can proliferate and serves as a reminder to carefully consider the potential role of systemic therapy in PAAS management.
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Cho et al. (2026) conducted a case report in Primary pulmonary artery angiosarcoma (PAAS) (n=1). Pulmonary endarterectomy with tumor resection was evaluated on Postoperative recurrence. Pulmonary endarterectomy with tumor resection for primary pulmonary artery angiosarcoma was followed by fulminant postoperative recurrence and systemic metastases within nine days of surgery.
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