Abdominal computed tomography predictors of technical success of endoscopic ultrasound-guided gallbladder drainage

Aims Endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) was not always technically feasible. Our study aim was to evaluate abdomen computed tomography (CT) predictors of EUS-GBD technical success (TS).

Methods The CT images of all consecutive patients that underwent EUS-GBD from January 2020 to December 2022 in our hospital were retrospectively evaluated. CT data collected were: artifacts presence, days between CT and EUS-GBD, slice thickness, region of interest (ROI) density, GB morphology, GB long and short axis, sludge, stones presence, size, location and density, distance between GB and antrum or duodenal bulb, GB wall thickness and peri-GB fluid presence. EUS-GBD data evaluated were:type and size of stent, TS and clinical success.

Results We evaluated 45 abdomen CTs of patients that underwent EUS-GBD (male 27 60%, mean age 81.3±10.5 years old). The mean time between CT and EUS-GBD was 4±4 days. EUS-GBD was performed via duodenal bulb in 29 (64.4%) cases. Mean GB short and long axis length were 42.1±11.4 and 103.4±28.7 mm, respectively. Mean CT distance between GB and stomach or duodenal bulb were 14.8±12.9 and 10.8±10.6 mm, respectively. Stones were found in 22 (48.9%) GB with mean size of 14.9±4.5 mm. Sludge was described in 23 (51.1%) cases. On univariate analysis, CT GB long axis length and GB wall thickness were significantly related to EUS-GB TS, but only GB wall thickness was an independent predictor (p:0.027,OR 0.28[0.09-0.86]) of EUS-GBD TS at multivariate analysis.

Conclusions Pre-EUS-GBD CT may be a useful tool to predict EUS-GBD TS, especially the TC measurement of GB wall thickness.

 

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Conflicts of interest

Authors do not have any conflict of interest to disclose.

Publication History

Article published online:
14 April 2023