Image-Guided Cholecystostomy Tube Placement: Short- and LongTerm Outcomes of Transhepatic Versus Transperitoneal Placement

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Executive Summary

This briefing document analyzes the outcomes of percutaneous cholecystostomy (PC) based on the route of catheter placement: transhepatic versus transperitoneal. While traditional medical teaching and textbooks have long favored the transhepatic approach to minimize complications—specifically bile peritonitis and catheter dislodgment—a comprehensive 13-year retrospective study of 373 patients indicates no significant difference in short- or long-term outcomes between the two methods.

The study concludes that both routes are equally safe and effective. Consequently, the choice of approach should be dictated by the patient’s specific anatomy, the location of the gallbladder, and the operator’s discretion, rather than a perceived inherent superiority of the transhepatic route.

Procedural Overview

Percutaneous cholecystostomy is a minimally invasive, image-guided procedure used primarily to manage acute cholecystitis in patients who are poor candidates for standard laparoscopic cholecystectomy due to multiple comorbidities. Since its first description in 1979/1980, the procedure has gained significant acceptance, representing 3% of all gallbladder procedures in the U.S. by 2009—a sixfold increase since 1994.

Access Routes

  • Transhepatic (TH): The catheter traverses the liver parenchyma before entering the gallbladder.

  • Transperitoneal (TP): Gallbladder access is achieved directly without crossing the liver.

Placement Techniques

  • Trocar Technique: The catheter is placed directly into the gallbladder.

  • Seldinger Technique: Initial access is gained with a smaller catheter/needle, followed by an exchange over a wire for a larger diameter catheter.

  • Guidance Modalities: Procedures are typically performed using ultrasound, fluoroscopy, CT, or a combination thereof.

Study Methodology and Patient Characteristics

The analysis was based on a retrospective study conducted at Rhode Island Hospital, covering cases from January 2004 through December 2016.

  • Cohort Size: 373 patients (218 transhepatic; 153 transperitoneal; 2 excluded due to unknown route).

  • Guidance Used: Ultrasound alone (229 patients) was the most frequent, followed by ultrasound with fluoroscopy (129 patients).

  • Practitioners: 34 different attending physicians performed the procedures, reducing bias toward any single operator's technique.

Comparative Patient Data

The study found no significant differences between the transhepatic and transperitoneal groups regarding age, sex, BMI, presence of gallstones, or use of anticoagulants.

Note: There was a statistically significant difference in catheter size and technique; transperitoneal drains were typically smaller and placed via the trocar technique.

Comparison of Clinical Outcomes

The central finding of the study is the lack of statistical difference (p > 0.05) in complications between the two access routes.

Primary Complication Rates

Catheter Stability and Maintenance

There was no significant difference in unplanned catheter removals, regardless of whether the catheter was dislodged, fell out, or was pulled out by the patient.

  • Transperitoneal dislodgment/removal rate: Combined metrics showed no increased risk despite the smaller median catheter size (8.5F) compared to the transhepatic group (10F).

  • Need for Replacement: 3.25% for TP vs. 3.67% for TH (p = 0.827).

Deconstruction of Traditional Medical Dogma

The study specifically addressed and refuted several long-standing rationales for preferring the transhepatic route:

  1. Bile Peritonitis Prevention: It was traditionally thought that the liver parenchyma would "seal" the gallbladder, preventing bile from leaking into the peritoneal cavity. However, the study recorded zero cases of bile peritonitis in either group, suggesting the transperitoneal route does not increase this risk.

  2. Catheter Dislodgment: Textbooks often claim the transhepatic route provides better stability. The data showed that transperitoneal catheters were no more likely to be dislodged or require replacement.

  3. Track Maturation: Some literature suggests the transhepatic route allows for quicker maturation of the catheter track. This study found no difference in the duration the catheter remained in place (median 42 days for both groups) or in complications after removal that would suggest inadequate track maturation.

  4. Bleeding Risk: While the transperitoneal route theoretically decreases bleeding risk by avoiding the liver, no significant difference in post-discharge bleeding was observed, even though transhepatic catheters were significantly larger in diameter.

Conclusion

The evidence indicates that the transperitoneal approach to percutaneous cholecystostomy is equivalent to the transhepatic approach in all clinical measures, including safety, complication rates, and long-term outcomes.

The traditional insistence on the superiority of the transhepatic route is not supported by this large-scale data analysis. Practitioners should feel confident choosing the access route that appears safer and less technically challenging based on the individual patient's anatomy, gallbladder distention, and the presence of intervening bowel or organs.