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Skeletal Radiol. 1997 Mar;26(3):167-72.

Liposarcoma of soft tissue: MRI findings with pathologic correlation.

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1
Department of Radiology, Hospital of Ege University, Bornova, Izmir, Turkey.

Abstract

OBJECTIVE:

To evaluate the MRI findings of liposarcomas of different histologic types and correlate these with the histopathologic features.

DESIGN:

The MR images of seven liposarcomas were reviewed retrospectively to assess the tumor size, location, margination, signal characteristics and enhancement patterns in different histologic types.

PATIENTS:

Seven liposarcomas comprising three well-differentiated, two myxoid and two pleomorphic types were evaluated.

RESULTS AND CONCLUSION:

All tumors showed well-defined and mostly lobulated margins. The well-differentiated liposarcomas were composed mainly of fat with septations or nodules, were hyperintense on T2-weighted images, and demonstrated faint enhancement or no enhancement following intravenous contrast. Myxoid liposarcomas were homogeneous or mildly heterogeneous and a pseudocapsule was present in one case. Pleomorphic types showed a markedly heterogeneous internal structure. Both myxoid and pleomorphic lesions-showed moderate or marked heterogeneous enhancement after contrast administration. Well-differentiated liposarcomas may be differentiated from other types of the tumor by their largely lipomatous appearance. The malignancy grade increases in parallel with tumor heterogeneity and contrast enhancement.

PMID:
9108227
[Indexed for MEDLINE]
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