Imamura Yumi, Nakajima Reiko, Hatta Kazuha, Seshimo Akiyoshi, Sawada Tatsuo, Abe Koichiro, Sakai Shuji
Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan.
Department of Surgery II, Tokyo Women's Medical University, Tokyo, Japan.
Acta Radiol Open. 2016 Aug 10;5(8):2058460116649799. doi: 10.1177/2058460116649799. eCollection 2016 Aug.
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.
我们报告脾脏硬化性血管瘤样结节性转化（SANT）的18F-氟脱氧葡萄糖（FDG）正电子发射断层扫描（PET）/计算机断层扫描（CT）表现。患者为一名37岁女性，腹部超声偶然发现脾脏肿物。FDG-PET/CT显示FDG摄取较弱（最大标准化摄取值=3.65）。平扫CT显示脾脏肿瘤密度较低，边界清晰，动脉期至延迟期呈轻度强化。尽管术前诊断为脾脏血管瘤或错构瘤，但组织病理学检查显示为SANT。因此，当观察到脾脏肿瘤造影剂强化较弱且FDG摄取较低时，应将SANT作为鉴别诊断考虑。虽然已有关于SANT的CT和磁共振成像特征的报道，但关于FDG-PET/CT表现的报道较少。我们报告SANT的影像学特征，包括FDG-PET/CT，并复习SANT的相关文献。
