[Clinical and x-ray morphological parallels in soft tissue liposarcomas]

The clinicoroentgenological data in 45 cases (20 males and 25 females, average age 50.3 years) of soft tissue liposarcomas, histologically subdivided into 28 myxoid, 12 polymorphic and 5 round-cell tumors were compared. The means case history was 3.2 years (3.8 years--for myxoid and 2.2 years for polymorphic and roundcell liposarcomas). In 95.6% of cases, tumor sites were in the musculare of the extremities, more frequently, legs. Tumors were rather large in size (average 16.5 cm). Myxoid tumors developed slowly, causing no pain. The radiograms of these tumors showed multiple tumor nodes, reduced shadow density, structural heterogeneity, distinct contours, infrequent cutaneous infiltration and secondary changes in bones. Signs of malignancy were indistinct in angiograms. Clinically and roentgenologically, round-cell liposarcomas resembled most other types of soft tissue sarcomas. Polymorphic tumors had many features in common both with myxoid and round-cell neoplasms.