Hepatic visualization with a "hot" spot adjacent to the porta hepatis in Tc-99m MAA venography of the lower extremity: a sign of IVC obstruction.
A patient with suspected leg vein occlusion underwent 99mTc-MAA and 99mTc-pertechnetate venographies. The former study showed faint visualization of the liver associated with a large "hot" spot near the porta hepatis, a secondary sign of inferior vena cava obstruction, whereas the latter study did not demonstrate such findings. It is emphasized that the usage of 99mTc-MAA for venography, in addition to allowing detection of pulmonary embolism, has the advantage of visualization of the liver to strengthen the diagnosis of inferior vena cava obstruction.
DeLand
F H
FH
VA Medical Center, Syracuse NY.
Shih
W J
WJ
D006801:Humans; D007866:Leg / Q000098:blood supply*; D008099:Liver / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011875:Radionuclide Angiography; D013670:Sodium Pertechnetate Tc 99m; D013668:Technetium Tc 99m Aggregated Albumin; D013927:Thrombosis / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014680:Veins / Q000000981:diagnostic imaging; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging
D013668:Technetium Tc 99m Aggregated Albumin; D013670:Sodium Pertechnetate Tc 99m