PMC8113362_01
Computed tomography angiography demonstrating occlusion of the left pulmonary artery.
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Computed tomography angiography (CTA) of the chest was performed and demonstrated a mass occluding the left main pulmonary artery, which was diagnosed as a PE (Figure 1).
Positron emission tomography-computed tomography scan demonstrating fluorodeoxyglucose avidity of the left pulmonary artery mass.
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Positron emission tomography (PET)-CT on February 14, 2019, showed a metabolically active mass at the left main pulmonary artery with a standardized uptake value (SUV) of 6.0 (Figure 2) distinguishing the lesion from a pulmonary embolism.
High-grade undifferentiated sarcoma within the pulmonary artery, 100x (left) and 200x (right). On the left, the pulmonary artery is identified with yellow arrows and the tumor cells are identified by red arrows. On the right, the magnified tumor cells (again identified with red arrows) display significant polymorphism. Necrotic debris is also visible and is identified with orange arrows.
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Pathology report revealed high-grade undifferentiated sarcoma within the pulmonary artery that extended to the bronchial wall and hilar soft tissue (Figure 3).
Computed tomography angiography demonstrating filling defect within the pulmonary artery and disease recurrence.
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CT scan demonstrated a large filling defect within left mid-pole extending into the right main pulmonary artery concerning for tumor thrombus with right heart strain (Figure 4).