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  • Title: Ultrasonography and computed tomography in the diagnosis of homogeneous masses.
    Author: Yeh HC, Wolf BS.
    Journal: Radiology; 1977 May; 123(2):425-8. PubMed ID: 191873.
    Abstract:
    Ultrasonography can demonstrate the homogeneity, while CT can demonstrate the density of a mass lesion. If a mass appears echo-free at ultrasonography, but is denser than water at CT, a solid tumor with grossly uniform cellular structure (usually a lymphoma or sarcoma), or a hematoma or hemorrhagic cyst is likely. However, if the mass has water density at CT, a cystic lesion is confirmed. One case for each category is presented.
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