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case_images: (A) Dorso-ventral view of the thoracic cavity showing ground-glass opacities in the right caudal lung lobe and atelectasis in the cranial left lung lobe. (B) Right lateral view showing an enlarged cardiac silhouette and elevation of the tracheal carina.
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case_images: Radiographic examination identified atelectasis in the left cranial lung lobe, slight opacities in the right caudal lung lobe, an enlarged cardiac silhouette, and elevation of the tracheal bifurcation (Figure 1).
case_images: Echocardiographic assessment of left ventricular diverticulum. (A) Left ventricular diverticulum observed in the left apical four-chamber view. (B) Pulsed-wave Doppler analysis of blood flow at the diverticulum opening during systole. (C) Pulsed-wave Doppler analysis of blood flow at the diverticulum opening during diastole. Abbreviations: RV (right ventricle); RA (right atrium); LV (left ventricle); LA (left atrium).
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case_images: The left ventricular (LV) diverticulum was identified using echocardiography, measuring 10.2 x 7.6 mm, with a 3.6 mm opening connecting it to the LV chamber (Figure 2A). Blood flow dynamics demonstrated bidirectional flow through the diverticulum: during diastole, blood flowed from the diverticulum into the LV at a velocity of 201.8 cm/s, while during systole, blood was ejected from the LV into the diverticulum at a velocity of 419.1 cm/s (Figure 2B).
case_images: Cardiac synchronous CT imaging of the left ventricular diverticulum. (A) Transverse plane demonstrating the anatomical location of the diverticulum adjacent to the sternum (transverse section of the fourth vertebral body). (B) Sagittal plane illustrating the absence of myocardial tissue surrounding the diverticulum and lack of communication with the right ventricle. Abbreviations: LV (left ventricle); RV (right ventricle); LA (left atrium); AO (aorta); PA (pulmonary artery).
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case_images: Contrast-enhanced CT studies showed no evidence of communication between the diverticulum and the right ventricular chamber, effectively ruling out any significant right ventricular traffic (Figure 3).
case_images: Three-dimensional reconstruction of cardiac synchronous CT. The 3D image depicts the position of the diverticulum relative to the sternum and ribs, emphasizing its dynamic changes during the cardiac cycle.
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case_images: Dynamic imaging through electrocardiosynchronous CT revealed the diverticulum's functional characteristics (Figure 4).