case_images: PMC10687942_01
case_images: (a) Transesophageal echocardiography showing the right ventricular outflow tract and the trunk of the pulmonary artery with a tumour pedunculated on the pulmonary valve. (b) Cardiac MRI T1 with contrast. (c) Cardiac MRI T1 with contrast. (d) Cardiac MRI T1 with contrast. (e) Cardiac MRI T1 without contrast. (f) Cardiac MRI T2.
case_images: 10.1177_2050313X231216544-fig1.jpg
case_images: PMC10687942_01_10.1177_2050313X231216544-fig1.jpg
case_images: fig1-2050313X231216544
case_images: The transthoracic echocardiogram showed an echo-dense image in the RVOT, initially interpreted as a thrombus, but transesophageal echocardiography was recommended and showed an echo-dense mass of 2.5 cm, rounded and with clear limits, with an anchoring in the anterior face of the RVOT and that protruded in each systole to the pulmonary artery trunk, regressing in the diastole to the RVOT, with negligible valve regurgitation (Figure 1(a)).
case_images: (a) Intraoperative photo showing the tumour through a little right ventricular infundibulotomy. (b) Blue arrow pointing to the pedicle of the lipoma. Yellow arrow pointing to pulmonary valve leaflet. (c) Main tumour mass, trilobed (red arrow). It is a yellowish, soft, smooth mass, with well-defined edges, without invasion of neighbouring structures, flexible and about 2 cm in diameter.
case_images: 10.1177_2050313X231216544-fig2.jpg
case_images: PMC10687942_01_10.1177_2050313X231216544-fig2.jpg
case_images: fig2-2050313X231216544
case_images: It was a yellowish rubbery mass, soft, smooth, flexible, with well-defined edges, without invasion of neighbouring structures and about 2 cm in diameter (Figure 2).
case_images: (a) Microphotograph of a well-defined lipomatous formation that stretches its endocardial covering (H-E, x50). (b) Tumour area of mature monovacuolar adipocytes with good capsular delimitation of the endocardial strip (H-E, x100). (c) Area of spindle cells and adipocytes, without atypia, and a weft of coarse, rope-like bands of collagen fibres (H-E, x400). (d) The immunohistochemical study shows immunoreactivity especially in spindle-cell areas for CD-34 (x50). (e) Positivity for CD-34 (x400). (f) Negative for vascular and endocardial endothelial material CD-31 (x100).
case_images: 10.1177_2050313X231216544-fig3.jpg
case_images: PMC10687942_01_10.1177_2050313X231216544-fig3.jpg
case_images: fig3-2050313X231216544
case_images: Negative for vascular and endocardial endothelial material CD-31 (Figure 3).
case_images: (a) Postoperative transthoracic ultrasound showing absence of tumour or obstruction in the pulmonary artery. (b) Postoperative transesophageal echocardiography showing minimal pulmonary valve insufficiency.
case_images: 10.1177_2050313X231216544-fig4.jpg
case_images: PMC10687942_01_10.1177_2050313X231216544-fig4.jpg
case_images: fig4-2050313X231216544