A rounded opacity silhouetting the left heart border and hilum

Pericardial incidentaloma: benign pericardial cyst
από Lin, A. N., Lin, S., Lin, K., Raju, F. στο BMJ Case Reports Last 6 Issues
Μετάφραση άρθρου
Description
A 73-year-old woman with hypertension and atrial fibrillation presented with head and neck injury after mechanical fall. During workup, chest X-ray anteroposterior view (figure 1) revealed a rounded opacity silhouetting the left heart border and hilum. Subsequent contrast-enhanced CT of the chest showed single, 6.4 cm, rounded, well-defined, thin-walled, non-enhanced, low attenuated (–20 and 20 Hounsfield Unit) and homogenous cyst-like structure at the left mediastinum connected to pericardial recesses and not attached to adjacent structures (figure 2A–C). Transthoracic echocardiogram ruled out left ventricular aneurysm, aortic aneurysm, solid tumour and outflow tracts obstruction. Although bronchogenic cyst, oesophageal duplication cyst, thymic tumour and mediastinal lymphoma were considered as possible differentials, radiological features such as CT appearance, homogenous attenuation, unrelated to the underlying structures favoured pericardial cyst. Since patient was asymptomatic, patient and family member were unwilling to undergo surgical removal and pathological confirmation. Follow-up with non-enhanced CT of…

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