CT and MRI findings of rhabdomyosarcoma
10.3969/j.issn.1002-1671.2025.03.008
- VernacularTitle:横纹肌肉瘤的CT及MRI表现
- Author:
Ya PANG
1
;
Peiling JIANG
1
;
Xi ZHANG
1
Author Information
1. 陆军军医大学第二附属医院放射科,重庆 400037
- Publication Type:Journal Article
- Keywords:
rhabdomyosarcoma;
computed tomography;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2025;41(3):390-393
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the CT and MRI findings of rhabdomyosarcoma(RMS).Methods A retrospective analysis was conducted on CT and/or MRI data of 19 cases of pathologically confirmed RMS.The growth location,morphology,density/sig-nal intensity,enhancement pattern,and infiltration scope of the lesions were analyzed.Results Among the 19 patients,12 lesions were located in the head and neck regions(sinuses,nasal cavity,masseter muscle,infratemporal fossa,nasopharynx,and gum),2 in the lower extremities,1 in the left heart,1 in the mediastinum,1 in the prostate,1 in the testicle,and 1 in the pelvis.On CT scans,the lesions appeared as homogeneously iso-or hypodensity compared to the muscle,with homogeneous or inhomogeneous enhancement on contrast-enhanced scans.On MRI,the lesions exhibited iso-or hypointense signals on T1WI and inhomogeneous hyperintense signals on T2WI,with inhomogeneous enhancement on contrast-enhanced scans.All lesions had irregular morphologies but clear boundaries,and no calcification or hemorrhage was observed within the lesions.Lesions in the sinuses often invaded adjacent sinus cavities or the nasal cavity and orbit,and some lesions could involve the intracranial cavity through the cranial base foramina.Bone destruction could occurred.Regional lymph node enlargement in the drainage area was observed in some cases.One case exhibited multiple osseous metastases.Conclusion RMS can occur in various parts of the body,with the head and neck being the most common site.Most cases lack specificity,but CT and MRI is helpful to understand the location of the disease,its invasion of surrounding tissues,and the presence of metastasis,thereby assisting in treatment and prognosis evaluation.
