case_images: PMC10694266_01
case_images: (A) Chest radiograph revealed extreme cardiomegaly (cardiothoracic ratio: 0.82). (B) Cardiac silhouette of one heart with two lobes was shown on the chest radiograph and was merged with a 3-dimensional multidetector-computed tomography.
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case_images: PMC10694266_01_fped-11-1302182-g001.jpg
case_images: F1
case_images: The chest x-ray incidentally revealed significant cardiac enlargement (Figure 1A). Further imaging with 3-dimensional multidetector-computed tomography (MDCT) confirmed the diagnosis (Figures 1B, 2B).
case_images: (A) Apical four-chamber view in transthoracic echocardiography revealed a giant aneurysm formation connecting to the left atrium, and (B) contrast-enhanced computed tomography demonstrated a huge cystic lesion (filled with contrast), which made the heart deviate to the right side. AO, aorta, LA, left atrium, LV, left ventricle, RV, right ventricle, LAA, left atrial appendage.
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case_images: PMC10694266_01_fped-11-1302182-g002.jpg
case_images: F2
case_images: The patient was subsequently referred to the pediatric cardiology clinic, where an echocardiography showed a giant cystic lesion (41 x 47 mm) connecting to the left atrium, consistent with a LAAA (Figure 2A). Further imaging with 3-dimensional multidetector-computed tomography (MDCT) confirmed the diagnosis (Figures 1B, 2B).
case_images: (A) A 3.5 x 2 x 1 cm cyst was resected from the left atrium. (B) Pathology showed fibrous and smooth muscle tissue content, consistent with left atrial appendage aneurysm.
case_images: fped-11-1302182-g003.jpg
case_images: PMC10694266_01_fped-11-1302182-g003.jpg
case_images: F3
case_images: The pathology of the aneurysm revealed a 3.5 cm x 2.0 cm x 1.0 cm cystic mass containing fibrous and smooth muscle tissue (Figure 3).
case_images: A post-aneurysmectomy chest radiograph showed a normal-sized heart with a normal silhouette of the left atrial appendage.
case_images: fped-11-1302182-g004.jpg
case_images: PMC10694266_01_fped-11-1302182-g004.jpg
case_images: F4
case_images: A post-aneurysmectomy chest radiograph showed a normal-sized heart with a normal silhouette of the left heart border (Figure 4).