Figure 2 Two-month interval CT images comparison. (A) Plain scan CT image from 1 June 2024. The yellow arrowhead points to significant thickening of the right atrial myocardium. (B) Arterial-phase image from 5 June 2024. The yellow arrowhead points to cardiac space-occupying lesions with heterogeneous enhancement on contrast-enhanced CT. (C) Delayed-phase image from 5 June 2024. The yellow arrowhead indicates cardiac space-occupying lesions with heterogeneous enhancement on contrast-enhanced CT. (D) Arterial-phase image from 5 August 2024. The yellow arrowhead shows marked reduction in lesion size on follow-up contrast-enhanced CT at 2 months. (E) Venous-phase image from 5 August 2024. The yellow arrowhead shows marked reduction in lesion size on follow-up contrast-enhanced CT at 2 months. (F) Delayed-phase image from 5 August 2024. CT, computerized tomography. The yellow arrowhead shows marked reduction in lesion size on follow-up contrast-enhanced CT at 2 months.