Intravascular plasma cell granuloma of the pulmonary artery.

A 29-year old man presented with chronic cough. A chest X-ray revealed several faint round opacities in the right upper zone (Fig. 1a). Computed tomography showed a mass occluding the right main pulmonary artery (Fig. 1b). Positron emission tomography showed increased activity (Fig. 1c). He underwent median sternotomy and intrapericardial right pneumonectomy. Histopathology revealed an intravascular plasma cell granuloma (Fig. 1d).