Key result
CT reveals pulmonary artery intimal sarcoma with internal calcifications initially mimicking chronic pulmonary embolism.
Why the study?
Pulmonary artery intimal sarcoma is a rare cause of pulmonary hypertension often initially misdiagnosed as pulmonary embolus, leading to delayed definitive management.
Case Report (n=1)
Answers are grounded in this paper and cite their sources.
Early recognition of specific CT characteristics is critical to differentiate rare pulmonary artery intimal sarcoma from pulmonary embolism and avoid delays in definitive management.
Pulmonary artery (PA) intimal sarcoma (PAIS) is a rare cause of pulmonary hypertension, and is often managed initially as a pulmonary embolus (PE)[1]. Computerized tomography (CT) characteristics that raise suspicion of PAIS include contour, density, and location of the vascular occlusion, or persistence despite anticoagulation[2]. Early recognition is critical to avoid delays to definitive management, and failure to consider the diagnosis early contributes to poor outcomes of the disease[3]. A 42-year-old male with exertional dyspnea was found to have a large proximal PA occlusion with internal calcifications (Figure 1a) that was initially suspected to represent chronic PE given the calcified appearance.
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Laratta et al. (2026) conducted a case report in Pulmonary artery intimal sarcoma (n=1). Computerized tomography (CT) was evaluated. Computerized tomography revealed a large proximal pulmonary artery occlusion with internal calcifications, identifying pulmonary artery intimal sarcoma that was initially suspected to be a chronic PE.
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