By A M A de Schepper
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Extra info for Imaging of soft tissue tumors
38 38 39 42 . . . . . . . . . . . . . . 1 Introduction The imaging evaluation of a patient with a suspected soft tissue tumor requires a methodical approach that recognizes the beneﬁts and limitations of the numerous imaging techniques that are available today. Consideration must be given to the ﬁnancial costs and invasiveness of each technique balanced against the diagnostic reward. The temptation to routinely employ every technique in all patients should be resisted.
Absence of ﬂow was found to be nonspeciﬁc, but occurred only in benign lesions such as lipoma, neuroﬁbroma, and cysts . Solid lesions may show increased blood ﬂow. High-frequency Doppler shifts have been described in highgrade malignant bone tumors with an associated soft tissue mass (Figs. 6)  and in soft tissue Ewing’s sarcoma, rhabdomyosarcoma (Fig. 1), synovial sarcoma, myxoﬁbrosarcoma (formerly “malignant ﬁbrous histiocytoma”), and other soft tissue tumors (Fig. 2) [17, 22, 29, 32, 33, 40], but there may be overlap with certain benign solid soft tissue tumors (Figs.
As such, color Doppler-controlled needle biopsy assists in making the diagnosis of malignancy with an accuracy of 97% and of 94% for the diagnosis of soft tissue sarcoma. These results are comparable with those of incisional biopsy . Absence of intratumoral blood ﬂow may be real, or it may indicate that ﬂow velocities present are below the minimal threshold of detection [17, 20, 22]. Furthermore, because the tumor vessels are microscopic, absence of ﬂow may be due to sampling errors in large, heterogeneous tumors .
Imaging of soft tissue tumors by A M A de Schepper