Pulmonary Artery Sarcoma Diagnosed Using an Endovascular Catheter Forceps Biopsy

Figures

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  Figure 1.. Radiological examination findings. (A-C) In the previous year, contrast-enhanced computed tomography (CT) showed a mass in the left pulmonary artery and deep vein thrombosis (DVT). (B, C) The DVT was localized in the left superficial femoral vein and the bilateral below-the-knee deep vein (arrows). (D) Contrast-enhanced CT reveals a mild enhanced mass in the left pulmonary artery. The mass has increased in size from the previous year and has progressed to the right pulmonary artery. (E) 18F-Fluorodeoxyglucose (FDG) positron emission tomography with integrated CT shows a positive uptake of FDG to the pulmonary artery mass.

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  Figure 2.. An intravascular ultrasonography (IVUS) study revealed that the right PA lumen where the tumor was located was crescent-shaped. PA: pulmonary artery

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  Figure 3.. Various imaging findings. (A and C) Angiographic examinations reveal a filling defect of the right main pulmonary artery. (B and D) Three-dimensional computed tomography (CT) images show a positional relationship between the pulmonary artery and the mass (pulmonary artery is blue, mass is green). (A and B) The anteroposterior view. (C and D) Left anterior oblique view at 60°.

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  Figure 4.. An endovascular catheter forceps biopsy was performed after pulmonary angiography. (A) The anteroposterior view. (B) The left anterior oblique view at 60°.

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  Figure 5.. Histological findings of the biopsy specimens. The tumor is composed of spindle-shaped or polygonal cells (Hematoxylin and Eosin staining; original magnification, 200×).