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Hepatic metastases from leiomyosarcoma: MR features with histopathologic correlation
P Soyer1, M Riopel, D A Bluemke
1Department of Radiology, Hôpital Foch, 40 rue Worth, 92151 Suresnes Cedex, France.
Abdominal Imaging
|January 1, 1997
Summary
Hepatic metastases from leiomyosarcoma often appear hemangioma-like on T2-weighted MRI. This pattern, characterized by homogeneous hyperintensity, is linked to fibrous tissue, not cystic changes, aiding diagnosis.
Area of Science:
- Radiology
- Oncology
- Pathology
Background:
- Leiomyosarcoma can metastasize to the liver.
- Understanding the imaging features of these metastases is crucial for diagnosis and management.
Purpose of the Study:
- To define the magnetic resonance (MR) imaging characteristics of hepatic metastases originating from leiomyosarcoma.
- To correlate these MR findings with their underlying pathologic features.
Main Methods:
- Retrospective review of MR examinations in eight patients with 16 hepatic leiomyosarcoma metastases.
- Correlation of MR imaging features with pathologic findings in 11 metastases.
Main Results:
- On T1-weighted images, most metastases were homogeneous; one heterogeneous metastasis showed necrosis and hemorrhage.
- On T2-weighted images, 12 of 16 metastases displayed a homogeneous, hyperintense, hemangioma-like pattern, associated with fibrous tissue.
- Four metastases were heterogeneous, with necrosis, hemorrhage, or gelatinous tissue.
Conclusions:
- A hemangioma-like pattern on T2-weighted MR images is the most common presentation for hepatic leiomyosarcoma metastases.
- Homogeneous hyperintensity on T2-weighted images does not indicate cystic changes in these neoplasms.