Click on image to view larger version.
FIGURE 1. Transaxial CT slice of 73-y-old woman with fatigue and exertional dyspnea. Images were obtained with soft-tissue window (A) and with lung window (B). Myocardial perfusion SPECT findings were normal. Large anterior mediastinal mass (1) and lung nodule (2) are seen on CT portion of images. Mediastinal mass is likely pericardial cyst. Both findings were unknown, and there were no follow-up studies for over 1.5 y. Patient was then diagnosed with adenocarcinoma of right lung and underwent resection. Mediastinal cyst was confirmed at surgery.
