Multimodal Imaging Features of Cardiac Lipoma
10.3969/j.issn.1005-5185.2024.11.007
- VernacularTitle:心脏脂肪瘤多模态影像学特征
- Author:
Ping TIAN
1
;
Bo HAN
;
Jianmin ZHENG
;
Leilei LI
;
Minwen ZHENG
;
Ying LIU
Author Information
1. 空军军医大学西京医院放射科,陕西 西安 710032
- Keywords:
Heart neoplasms;
Lipoma;
Magnetic resonance imaging;
Tomography,X-ray computed;
Echocardiography
- From:
Chinese Journal of Medical Imaging
2024;32(11):1129-1133
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To investigate the diagnostic value of multimodal imaging in cardiac lipoma.Materials and Methods The clinical symptoms,echocardiography,CT and cardiac magnetic resonance images of 14 patients with cardiac lipoma diagnosed in Xijing Hospital of Air Force Military Medical University from July 2016 to November 2022 were retrospectively analyzed.Results Five patients with lipoma had symptoms of chest tightness and shortness of breath.A total of 18 lesions were found in 14 cases with cardiac lipoma.The locations of cardiac lipomas were widely distributed in the heart,of which 9 were located under the inner lining of the ventricular lumen(6 in the left ventricle,3 in the right ventricle),5 in the myocardium(4 in the left ventricle wall,1 in the right ventricle wall),3 in the pericardium,and 1 in the right ventricle.Echocardiography of 12 cases showed strong echoic mass image,and CT of 7 cases showed uniform low-density mass image.All patients cardiac magnetic resonance showed high signal of T1WI,and the tumor signal of lipid-pressure sequence decreased significantly.T2WI showed high signal and low signal ring around the tumor,indicating a chemical shift artifact.In the film sequence of heart,the mass could be seen to wobble gently and change in the shape of spontaneous motion cycle.The first perfusion scan did not show perfusion elevation.No enhancement was observed on the delayed enhanced scan.Native T1 mapping showed that the T1 value of mass was significantly lower than that of normal myocarda[(255.9±48.4)ms vs.(994.2±66.4)ms],and the difference was statistically significant(t=-32.5,P<0.001).Conclusion Multimodal imaging can provide objective evidence for clinical diagnosis of cardiac lipoma.Lipomas with extremely low T1 values were found,which is helpful to assist in the diagnosis of cardiac lipoma,clearer observation of the lesions,accurate localization,and strong ability to detect small lesions.Therefore,when cardiac lipoma is suspected,T1 mapping can be used as a routine examination method for the diagnosis and differential diagnosis of cardiac masses.
