Author/Authors :
Imamura, Yumi Department of Diagnostic Imaging and Nuclear Medicine - Tokyo Women’s Medical University, Japan , Nakajima, Reiko Department of Diagnostic Imaging and Nuclear Medicine - Tokyo Women’s Medical University, Japan , Hatta, Kazuha Department of Surgery II - Tokyo Women’s Medical University, Japan , Seshimo, Akiyoshi Department of Surgery II - Tokyo Women’s Medical University, Japan , Sawada, Tatsuo Department of Pathology - Tokyo Women’s Medical University, Japan , Abe, Koichiro Department of Diagnostic Imaging and Nuclear Medicine - Tokyo Women’s Medical University, Japan , Sakai, Shuji Department of Diagnostic Imaging and Nuclear Medicine - Tokyo Women’s Medical University, Japan
Abstract :
We report the 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) findings of sclerosing angiomatoid nodular transformation (SANT) of the spleen. The patient was a 37-year-old woman with a splenic mass incidentally found on abdominal ultrasound. FDG-PET/CT showed weak FDG accumulation (maximum standardized uptake value = 3.65). An unenhanced CT scan showed a low density and well-circumscribed splenic tumor that demonstrated weak enhancement from the arterial to delayed phase. Although hemangioma or hamartoma of the spleen was preoperatively diagnosed, histopathological examination revealed SANT. Therefore, when a splenic tumor with weak contrast medium enhancement and low FDG accumulation is observed, SANT should be considered as a differential diagnosis. Although CT and magnetic resonance imaging features of SANT have been reported, there are few reports on FDG-PET/CT findings. We report the radiological features of SANT, including FDG-PET/CT, and review the literature on SANT.
Keywords :
Sclerosing angiomatoid nodular transformation (SANT) , spleen , 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) , computed tomography (CT)
