Multidetector CT in detection of troublesome posterior sectoral hepatic duct communicating with cystic duct
Sumiyoshi Tatsuaki1, Shima Yasuo1, Okabayashi Takehiro1
11 Department of Gastroenterological Surgery, Kochi Health Sciences Center, Kochi, Japan.
Insights
Multiple detector CT (MDCT) can identify aberrant posterior sectoral hepatic ducts (PHD) that connect to the cystic duct (CD). This imaging technique is valuable for detecting these anomalies before surgery, even without bile duct dilation.
Area of Science:
- Radiology
- Hepatobiliary Surgery
- Anatomical Imaging
Background:
- Aberrant posterior sectoral hepatic ducts (PHD) communicating with the cystic duct (CD) present a surgical challenge during cholecystectomy.
- Preoperative identification of these anomalies is crucial for preventing intraoperative complications.
Purpose of the Study:
- To evaluate the efficacy of multiple detector CT (MDCT) in detecting aberrant posterior sectoral hepatic ducts (PHD) that communicate with the cystic duct (CD).
Main Methods:
- A retrospective review of preoperative MDCT images and surgical records was conducted for 224 patients undergoing hepatobiliary or pancreatic tumor surgery.
- The study specifically looked for unenhanced small ducts between Rouviere's sulcus and the cystic duct (CD) on MDCT scans.
Main Results:
- MDCT detected unenhanced ducts between Rouviere's sulcus and the CD in 3.6% of patients.
- Surgical records confirmed 3.1% of patients had aberrant PHD communicating with the CD, all of which were visualized on preoperative MDCT.
- Notably, 71% of these identified aberrant ducts were not associated with bile duct dilatation.
Conclusions:
- Multiple detector CT (MDCT) is effective in detecting troublesome aberrant posterior sectoral hepatic ducts (PHD) communicating with the cystic duct (CD).
- The detection capability of MDCT is independent of the presence or absence of bile duct dilatation, making it a reliable preoperative tool.
Objective:
To investigate whether multiple detector CT (MDCT) could detect troublesome aberrant posterior sectoral hepatic duct (PHD) communicating with cystic duct (CD).
Methods:
The most troublesome bile duct anomaly during cholecystectomy is an aberrant PHD communicating with CD. It has been suggested that an unenhanced small duct between Rouviere's sulcus and CD on MDCT could be coincident to an aberrant PHD communicating with CD. A total of 224 patients who underwent laparotomy with complete lymph node dissection in the hepatoduodenal ligament for hepatobiliary or pancreatic tumour were enrolled. Retrospective review of preoperative MDCT images and surgical records was performed.
Results:
Preoperative MDCT detected 8 (3.6%) unenhanced ducts between Rouviere's sulcus and CD. Surgical records identified 7 (3.1%) cases of aberrant PHD communicating with CD, and all 7 cases showed an unenhanced duct between Rouviere's sulcus and CD on preoperative MDCT imaging. Among the 7 patients, 5 (71%) were without bile duct dilatation.
Conclusion:
MDCT could detect troublesome aberrant PHD communicating with CD, regardless of the presence or absence of bile duct dilatation. Advances in knowledge: MDCT could detect most troublesome PHD communicating with CD, regardless of the presence or absence of bile duct dilatation.
