Sarawagi Radha, Sundar Shyam, Gupta Sanjeev K, Raghuwanshi Sameer
Deptartment of Radiodiagnosis, Mahatma Gandhi Medical College and Research Institute, Pillaiyarkuppam, Pondicherry 607 403, India.
Radiol Res Pract. 2016;2016:3021484. doi: 10.1155/2016/3021484. Epub 2016 May 25.
Background. Anatomical variations of cystic duct (CD) are frequently unrecognized. It is important to be aware of these variations prior to any surgical, percutaneous, or endoscopic intervention procedures. Objectives. The purpose of our study was to demonstrate the imaging features of CD and its variants using magnetic resonance cholangiopancreatography (MRCP) and document their prevalence in our population. Materials and Methods. This study included 198 patients who underwent MRCP due to different indications. Images were evaluated in picture archiving communication system (PACS) and variations of CD were documented. Results. Normal lateral insertion of CD at middle third of common hepatic duct was seen in 51% of cases. Medial insertion was seen in 16% of cases, of which 4% were low medial insertions. Low insertion of CD was noted in 9% of cases. Parallel course of CD was present in 7.5% of cases. High insertion was noted in 6% and short CD in 1% of cases. In 1 case, CD was draining into right hepatic duct. Congenital cystic dilation of CD was noted in one case with evidence of type IV choledochal cyst. Conclusion. Cystic duct variations are common and MRCP is an optimal imaging modality for demonstration of cystic duct anatomy.
背景。胆囊管（CD）的解剖变异常常未被识别。在进行任何外科、经皮或内镜干预手术之前，了解这些变异很重要。目的。我们研究的目的是利用磁共振胰胆管造影（MRCP）展示胆囊管及其变异的影像学特征，并记录它们在我们研究人群中的发生率。材料与方法。本研究纳入了198例因不同适应证接受MRCP检查的患者。在图像存档与通信系统（PACS）中对图像进行评估，并记录胆囊管的变异情况。结果。51%的病例可见胆囊管正常外侧插入肝总管中1/3处。16%的病例可见内侧插入，其中4%为低位内侧插入。9%的病例发现胆囊管低位插入。7.5%的病例胆囊管走行平行。6%的病例发现高位插入，1%的病例胆囊管短小。1例中，胆囊管汇入右肝管。1例中发现胆囊管先天性囊状扩张，伴有IV型胆管囊肿的证据。结论。胆囊管变异常见，MRCP是展示胆囊管解剖结构的最佳影像学检查方法。
