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(A) A chest enhanced computed tomography, demonstrating a filling defect in the left inferior pulmonary artery. (B) Pulmonary angiography, showing a large filling defect in the left pulmonary artery.
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A pulmonary thromboembolism was suspected, and chest enhanced computed tomography (CT) showed a filling defect in the left inferior pulmonary artery (Fig. 1A). Pulmonary angiography was performed and showed a large filling defect in the left pulmonary artery (Fig. 1B).
(A) Diffuse sheets of cytotrophoblastic and syncytiotrophoblastic cells (H&E staining, x400). (B) Tumor cells with diffuse positive cytoplasmic immunostaining for beta human chorionic gonadotropin (x100). (C) Tumor cells with positivity for pan cytokeratin (x40).
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Histologically, the pulmonary tumor embolism specimen revealed a malignancy consistent with choriocarcinoma (Fig. 2).