A Comparison of Complication Rates between Transhepatic and Transperitoneal Percutaneous Cholecystostomy Routes in the Treatment of Acute Cholecystitis
Executive Summary
This briefing document examines the comparative safety and efficacy of the two primary access routes for Percutaneous Cholecystostomy (PC): the transhepatic (TH) and transperitoneal (TP) approaches. Based on a retrospective study of 101 patients treated between 2018 and 2022, the evidence indicates that there is no statistically significant difference in complication rates between the two methods.
While historical literature has occasionally favored the TH route due to perceived lower rates of catheter-related issues, this analysis found that overall complication rates (39.7% for TP vs. 44.7% for TH) and specific outcomes—including catheter dislodgement, sepsis, and bile leakage—are comparable. The selection of the procedural route appears to be driven by interventional radiologist preference, patient anatomy, and clinical context rather than inherent differences in safety. Notably, the TP route was utilized significantly more frequently (62% of cases), reflecting local practice patterns.
Overview of Percutaneous Cholecystostomy (PC)
Percutaneous cholecystostomy is a minimally invasive, image-guided interventional radiology procedure designed to decompress the gallbladder. It serves as a critical alternative for patients with acute cholecystitis or other gallbladder-related complications who are deemed poor candidates for surgical cholecystectomy.
Clinical Indications and Patient Population
PC is indicated for patients presenting with calculous or acalculous cholecystitis, cholangitis, or biliary obstruction who exhibit:
Hemodynamic instability.
Severe cardiac ischemia.
Respiratory distress or renal failure.
Significant central nervous system disease.
The procedure boasts high technical success rates, documented between 95% and 100%, and allows high-risk populations—including elderly patients and those with unique conditions like acute fatty liver disease of pregnancy—to avoid the risks associated with general anesthesia.
Procedural Access Routes
There are two primary anatomical pathways used to place the drainage catheter:
Transhepatic (TH) Route: The needle traverses a portion of the liver near the "bare area" before entering the gallbladder neck. This route is historically suggested to provide better catheter stability and faster tract maturation.
Transperitoneal (TP) Route: The catheter is inserted directly into the exposed surface of the gallbladder fundus, bypassing the liver entirely. This is often preferred when the gallbladder is enlarged or positioned close to the anterior abdominal wall.
Analysis of Complication Rates
The study analyzed outcomes for 101 patients (63 TP and 38 TH) with up to 12 months of follow-up. Despite a hypothesis that the TH route would yield fewer complications, the data revealed no statistically significant differences across any measured category.
Comparative Outcome Data
Subgroup and Multivariate Findings
Indication-Specific Rates: Complication rates remained consistent across different diagnoses. For calculous cholecystitis, the rates were 46.3% (TP) vs. 36.0% (TH). In cases of gallbladder perforation, both routes showed a 50% complication rate.
Demographic Factors: Multivariate regression adjusting for age, sex, and indication confirmed that the procedural route was not a significant predictor of complications (p = 0.58).
Provider Influence: Sensitivity analyses showed that while some variation existed between individual staff members (ranging from 20% to 88.9% complication rates), the overall patterns remained consistent regardless of the center or the specific interventional radiologist.
Clinical Considerations and Route Selection
The research suggests that the choice between TP and TH is often dictated by clinical judgment rather than standardized guidelines.
Utilization Bias: Significantly more cases were performed via the TP route (p = 0.013), a finding attributed to operator preference and local institutional protocols rather than a proven safety advantage.
Anatomical Constraints:
TH Limitations: May be restricted in patients with severe liver disease, anatomical constraints, or those on anticoagulation therapy.
TP Preference: Favored when an enlarged gallbladder is highly accessible via the anterior abdominal wall.
Long-term Outcomes: Rates of subsequent cholecystectomy within 12 months were comparable (22.2% for TP vs. 26.3% for TH), suggesting that the initial access route does not adversely affect definitive surgical plans.
Conclusions and Future Research
The evidence indicates that both transperitoneal and transhepatic routes are viable and safe options for gallbladder drainage in high-risk patients. The lack of statistical significance in complication rates between the two methods challenges previous literature that favored the transhepatic approach.
Key Takeaways
Comparable Safety: Neither route demonstrated a superior safety profile regarding major complications like sepsis or bile leakage.
Flexibility in Practice: Interventional radiologists may continue to select the access route based on individual patient anatomy and procedural comfort.
Need for Standardization: The absence of standardized guidelines highlights a need for further prospective research to identify unmeasured confounders—such as BMI, patient comorbidities, and catheter dwell time—to better inform evidence-based selection criteria.
