Fig. 8

A 37-year-old female patient presented with acute non-radiating left chest pain. She had no cardiovascular risk factors. ECG showed sinus rhythm, and there were no ST or T wave abnormalities. Cardiac enzymes were normal, and the chest X-ray was unremarkable. Plain CT was performed for further evaluation. (a) Axial thoracic demonstrates a soft tissue lesion adjacent to the pericardium with a low attenuation coefficient (-39 HU). Based on the clinical and radiologic findings, the diagnosis of pericardial fat necrosis was suspected. (b) A month later, another axial thoracic CT showed that the lesion became smaller, with increased attenuation (15 HU)