Abstract
Aim: Accurate diagnosis of tumor thrombus and distinguishing
benignthrombus from tumor thrombus avoid unnecessary anticoagulant
treatment of #oncologicalpatients and it is important for patient
management. In this retrospective study, we aimed to demonstrate the
role of
FDG-PET/CT imaging for distinction of benign thrombus from tumor
#thrombus.
Materials and Methods:FDG-PET/CT imaging performed for staging, restaging and treatment response in oncological patients with
thrombus were evaluated for accurate diagnosis of tumor thrombus and distinguishing benign thrombus from tumor thrombus by the
examination of maximum standard uptake value (SUVmax). PET-CT imaging were evaluated both with #visualassessment and increased
metabolic activity. PET-CT findings were confirmed by clinical, radiological follow-up and biopsy in some cases.
Results:PET-CT imaging findings of a total of 37 patients with
suspected tumor thrombus (25 men, 12 women, mean age: 53.62-range:
8-82) were evaluated, retrospectively. Tumor thrombus in 11 segments in 8
patients (9 linear, 2 focal) and benign thrombus in 45 regions in the
other 29 patients were reported in the evaluation of a total of 56
thrombi region in 37 patients on visual analysis and according to the
increased
metabolic activity. The most common region of thrombosis was defined as
vena cava inferior. SUVmax values ranged from 7.91 to 20 (mean:
12.8) in 8 tumor thrombus patients. Compared to #mediastinalregion
increased #metabolicactivity was not detected in none of the 29 patients
with benign thrombus and these patients were treated with #anticoagulant agents.
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