Non-surgical acute cholecystitis: 2 cases of gallbladder rupture after internal endoscopic or percutaneous diversion

Gallbladder rupture is a rare but serious complication of acute cholecystitis. We describe two cases of acute cholecystitis in patients not candidate for surgery that underwent internal biliary drainage with endoscopic and percutaneous approach, respectively. Both experienced gallbladder rupture in the postoperative period. The complication occurred after percutaneous internal drainage was treated conservatively, whereas the latter occurred after the endoscopic maneuver required an external percutaneous approach. After a brief revision of the literature about the interventional management of acute cholecystitis, the Authors discuss the possible reasons of galbladder rupture. Case Report Non-surgical acute cholecystitis: 2 cases of gallbladder rupture after internal endoscopic or percutaneous diversion Lorenzo Monfardini1*, Claudio Sallemi1, Nicolo’ Gennaro2 and Claudio Bna1 1Division of Radiology, Fondazione Poliambulanza, Via Bissolati 57, 25124 Brescia, Italy 2Training School in Radiology, Humanitas University, Via R.L. Montalcini 4, 20090 Pieve Emanuele, Milan, Italy Received: 24 April, 2020 Accepted: 04 May, 2020 Published: 05 May, 2020 *Corresponding author: Lorenzo Monfardini, Division of Radiology, Fondazione Poliambulanza, Via Bissolati 57, 25124 Brescia, Italy, Tel: +390303518640; E-mail:


Introduction
Gallbladder rupture is a rare but serious complication of Acute Cholecystitis (AC) [1]. Usually presenting as a consequence of a local uncontrolled infl ammation, it has never been reported to occur after gallbladder drainage. We describe two cases of AC with contraindication to surgery that underwent internal biliary drainage with percutaneous and endoscopic approach, respectively. They both experienced rupture of the gallbladder in the post-treatment follow-up. The complication was managed conservatively in the case of the percutaneous treatment, whereas gallbladder rupture occurring after endoscopic treatment required an external percutaneous approach.

Case report 1
An 84-year old woman with previous lithiasis of the common bile treated with endoscopic sphincterotomy was admitted to ER for acute right fl ank pain. Laboratory, clinical and imaging fi ndings suggested acute calculous cholecystitis ( Figure 1). Because of the non-surgical profi le (ASA score= 4), she underwent a percutaneous internal drainage of the gallbladder via the cystic and the common bile duct to the duodenum. Cholangiography showed opacifi cation of the biliary tree without lithiasis of the cystic duct. A 26 cm 8F double J-ureteral stent was then advanced until the distal tip was lying in the II part of the duodenum (Figure 1c). After downsizing to 6F, the external drainage was removed with the unattended recommendation to undergo an endoscopic substitution not later than 3-4 months. The patient came again to our attention after 8 months with fever and hypogastrium pain. Contrast-enhanced CT scan did not reveal the the gallbladder but only hyperdense stones in the peritoneal cavity The endoscopic and percutaneous internal biliary drainage have been described in the management of AC and represent established approaches in non-surgical candidates [4][5][6][7][8][9][10].
Jatrogenic gallbladder perforation during surgery have been also described [2], but perforation after non surgical management of AC has rarely been reported so far [4].
Hypomotility has been recognized as an important risk factor for biliary lithiasis and AC. The delay in emptying the lumen favours stasis with sludge formation and represent a risk factor for chronicization of the infl ammation even in the avoid further complications. The patient was discharged few days later to a nursing home where she kept healthy until the time of writing.

Case report 2
An 85-year old woman was admitted to ER for upper abdominal pain, jaundice and fever. She had previous history of common bile duct lithiasis treated with endoscopic sphincterotomy and stones retrieval. She underwent contrastenhanced CT scan that showed gallbladder distention with thickened, enhanced walls and hyperdense material in both the common bile and cystic duct (Figure 2a)

Discussion
We described two cases of AC treated with percutaneous or endoscopic approach. The dissimilar therapeutic strategy presence of a patent cystic duct [11]. Chronic infl ammation is a well-known risk factor for gallbladder perforation [12]. We postulate hypomotility to be the responsible mechanism of the evolution of the described cases even as possible cause of stent obstruction, regardless the technique. In fact, the success of internal biliary drainage, performed either with percutaneous (case #1) or endoscopic (case #2) approach, relies on the intrinsic capacity of the gallbladder to empty into the duodenum.
At this regard, an external percutaneous drainage may stand as the elective therapeutic strategy in non-surgical patients, since it overcomes gallbladder hypomotility and allows washing and emptying of the lumen. Even if these operations can be performed also after the placement of an endoscopic drainage, they are indeed more practical and better tolerated when performed through a percutaneous drainage rather than a nasoduodenal catheter, which is hardly tolerated and whose small caliber may hamper washing and emptying maneuvers.
Moreover, a percutaneous external approach avoids invasive procedures like sphincterotomy whose complications like pancreatitis, local infections, can be barely tolerated by critical ill patients.
A novel method to interrupt the biliary-duodenal diversion was performed in case #2. To the best of our knowledge, using an Amplatzer vascular plug has never been described in this setting and resulted to be a successful therapeutic choice. Being most of vascular interventional radiologists familiar with, the Amplatzer vascular plug matches perfectly within the AXIOS system. This intrinsic feature should be known by operators and its use in this setting needs to be included among its possible off-label and non-routine use.
In conclusion, gallbladder rupture is a possible complication of AC treated with an internal bile diversion, being it performed either with an endoscopic or a percutaneous approach. Recognizing hypomotility as a risk factor for AC chroniziaction, external percutaneous drainage stands as the elective therapeutic strategy in non-surgical patients with hydropic AC. Amplatzer vascular plug may be used to occlude a biliary-duodenal diversion achieved with the AXIOS system. Epub 2020 Jan 27.)

Authorship contribution statement
Journal pertinence: Non-surgical acute cholecystitis is an open issue for surgeons. This short report underline the rising role of IR's in his management mostly in cases in which gallbladder motility can be compromised and percutaneous approach could be worthwhile rather than endoscopic one Thank you for receiving our manuscript and considering it for peer review process. We appreciate your time and looking forward to here backs you.
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