PMC4904605_01
CT scan without contrast enhancement showing a left anterior low-attenuation (-80 HU) pericardial mass with high attenuation strands surrounded by an irregular capsule (arrow) and a small pleural effusion (arrowhead).
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Nonenhanced computed tomography (CT) of the chest (Figure 1) showed a left anterior low-attenuation (-80 HU) pericardial mass with high attenuation strands measuring 47 mm in diameter, surrounded by an irregular capsule (arrow), and with an associated small pleural effusion (arrowhead).
Coronal reformatted CT showing no connection between the pericardial mass and infradiaphragmatic fatty tissues.
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CT confirmed no connection with infradiaphragmatic tissues (Figure 2). Contrast-enhanced CT (Figure 3) ruled out pulmonary embolism and aortic dissection but confirmed the typical appearance of pericardial fat necrosis.
Contrast-enhanced CT showing that the central fatty attenuation of the mass is not enhanced (star); the capsule shows a 50 HU increase in density (arrow).
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CT confirmed no connection with infradiaphragmatic tissues (Figure 2). Contrast-enhanced CT (Figure 3) ruled out pulmonary embolism and aortic dissection but confirmed the typical appearance of pericardial fat necrosis.
CT scan after 3 months showing a significant reduction in the size of the mass (arrow).
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On follow-up CT after 3 months (Figure 4), the mass was still present but significantly reduced in size (28 mm) (arrow).