Page 679 - Atlas of Small Animal CT and MRI

Neoplasia 669

Figure 6.4.6 Synovial Cell Sarcoma (Canine) CT
12y MC Rottweiler with a 3‐month history of
right thoracic limb lameness. A lobular soft‐
tissue attenuating mass is centered on the
right elbow joint (a: white arrowheads). There
is evidence of osteolysis of bone margins of
both the ulna and the humerus (a: black
arrowheads). The mass enhances nonuniformly
following intravenous contrast administration
and contains multiple relatively hypoattenuat-
ing cavitary regions (b). Biopsy confirmed a
diagnosis of synovial cell sarcoma.

(a) CT, TP (b) CT+C, TP

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