Data for: Paracaval Lipoma: Case Study and Literature Review

Abstract: Paracaval lipoma refers to a fatty tissue collection surrounding the intrahepatic portion of the inferior vena cava (IVC). It is a rare but benign finding on abdominal CT imaging, speculated to be a result of negative thoracic pressure on the inferior vena cava during inspiration. If not recognized, paracaval lipoma can be confused for thrombus or, worse yet, malignant invasion of the IVC, resulting in a costly and unnecessary workup. Here we describe a 51-year old white male presenting to our institution with a two-week history of abdominal pain, increasing abdominal girth, jaundice and ascites; subsequent CT of the abdomen and pelvis without contrast revealed an incidental finding of fat deposition around the caudate lobe in a juxtacaval distribution, consistent with paracaval lipoma.

摘要：腔旁脂肪瘤（Paracaval lipoma）指包绕下腔静脉（inferior vena cava, IVC）肝内段的脂肪组织聚集灶。该病变在腹部CT影像中虽属少见，但为良性表现，推测其成因与吸气时下腔静脉承受的胸腔负压有关。若未被正确识别，腔旁脂肪瘤易被误诊为血栓，甚至被误认为下腔静脉恶性浸润，进而引发昂贵且不必要的诊疗评估。本文报道1例51岁白人男性患者，因持续2周的腹痛、进行性腹围增大、黄疸及腹水就诊于我院；随后行腹部及盆腔平扫CT检查，意外发现尾状叶周围存在腔旁分布的脂肪沉积，符合腔旁脂肪瘤的影像学特征。