Büchler, M.

Z'graggen, K.

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Acta Chir. Austr iaca Heft 1 . 1999 51 From the l)cpartment of Visceral and Transplantation Surgery, University of Bern, lnselspital, Bern, Switzerhmd Invited Commentary to: ,,Gastric Outlet Obstruction Caused by Gallstone: Bouveret's Syndrome" K, Z'gra,k,,~en and M. W. Bitchier Bouveret's yndrome, the obstruction of the duodenal passage by a large gallstone, is a rare manifestation of hiliary lithiasis. Patients with gallstone ileus represent approximately 29} of all patients with mechanical bowel obstruction. Approximately 3% (1 to t0(;-~: .) of all patiems with g:dtskme itetts have Bouveret's syndrome (2, 3, 6), and the authors nicely present and document one of these rare cases. Bou,,erel's yndrome in its classic but rarely encountered lbrm (25%! radiologically presenls wkh Righ'r's trias, consisliag of pnetn-nobititt, a l rge extrabiliary gallstone, and obstruction of the intestinal passage in a plain ab- dominal X-ray (10). Another useful radiologic sign under these circumstances is air in lhe gallbladder, usually reterred to as Bal- thazar's sign (1). The standard treatmenl of classic gallslone ileus is surgical, and consists of enterolithotomy. The authors emphasize thai in Bouverel's yi~dronle non-surgical treatments, such us extracorporal shock wave litholripsy (ESWL), are avail- able as an ahermttive, or in their case as an adjunct o surgery (5). The rationale behind this strateg-, is to fragment the usually hlrge stoue to allow restoration of the inlestinal passage, This oplion is only available if the obstructing allstone is located proximally in the gastrointestinal tract so thal the distal stomach and duode- num can be ta rgeted  by t l l t rasound and ES \VL ,  whereas tones ill tl/e ileum are usually surrotmded by dilated intestinal lo~ps and, theretln-e. ;ire not amenable to this treatment (5). Another possi- bility tor gallstone fragmentation i Bouveret's yndrome, less readily available in most hospitals, is endoscopic contact lithotripsy (4). We would now like to discuss some of the clinical, pathogene- tic and therapeutic aspects of gouveret's yndrome that are not as extensively described in the present case. and which can im- prove the understanding of this rare manifestation of disease. The ,.conditio sine qua non °  `for gallstone ileus and Bouveret's syndrome is the presence ofa bilioente.'ic fistula, The most com- monly encountered fistula is a cholecystoduodenat one as descri- bed by Ondr</i,a et al. in their case. In the majority of cases thc underlying condition is chronic chotecystitis with intermittent acute inflammatory episodes and adherence of the gallbladder to the duodenum or the stomach in patients with Bouveret's yn- drome or gallstone iteus. Large stones within the gallbladder can then erode into an adherent neighboring viscus. A penetrating duodenal ulcer is a pathogenetic alternative. In cases with gall- stone ileus either cholecystoenteric or cholecystocolic fistulae are rarely encountered. It is, therefore, not surprising that more than 50% of these patienls have a ~ong history of intermittent biliary symptoms with mostly repetitive right upper quadrant Korrespondenzanschrift: M, W, Btichler, M. D., Depa,;tme~t ofVisceral and Transplant~;,ion Sureerv, . . . .  U.ai versify o~', ~eu~,~ .... nsei- spital, Ctt-30t0 Bern, Schweiz. Fax: ++4 U31/382 - 4772 E-math markus.buechler @ insel.ch pain (2) before they develop Bouveret's yndrome or gallstone ileus. In patients with cholesterol gaIlstones, as predominantly seen in die Western world, a history of jaundice is rare. [t can be observed in patients with choledochoduodenal fistula, or with Bouveret's yndrome accompanied by choledocholithiasis. The treatment of patients with Bouveret's syndrome by ESWL can be an elegant option to avoid surgery in patients that are usually oM and sometimes have high surgical risks. The goal of such a treatment, however, should be to avoid surgery. Although Omlrq/ka et al. state that ESWL was successful in the sense that it caused the ha-Be gallstone to pass the duodenum, this treatment really converted this case of Bouveret's yndrome into a classic case of' a gallstone iteus. Although the pubfished series are too small to give firm recommendations on surgical treatment op- tions in Bouveret's yndrome, the outcome in this and similar cases does not so much depend on the type of operation (primary laparotomy with gastroduodcnotomy versus enterolitholomy af- ter ESWL) but on the condition of the patients and their preexist- ing surgical risk factors, The dclay in treatment and the length of time of the evolving intestinal obstruction certainly have to be taken into account when assessing the risk of the patient (9). Finally, even a successful h'agmentation of an obstructing oallst)ne with spontaneous passage of the stone fraaments leaves the question unanswered whether a definitive surgical treatment consisting of chotecystectomy and closure of the bilioenteric fistula is necessary, and at what stage of the disease this shoukt be carried out, The morbidity and mortality of a one-stage procedure, i.e. definitive surgical treatment at the time of intestinal obstruction, seems to be higher compared to a Iwo-sta'-*e~ procedure (7). A more recent report, however, sug- gests that a one-stage procedure is probably indicated if local and general conditions permit a safe operation {2). We would certainly support his t,'ealment concept, which is to evaluate pa- tients carefully with respect o surgical risk factors, and operate on patients with Bouverel's yndrome and gallstone ileus in a one-stage procedure, if the surgical risk is acceptable. The op- tion of stone fragmenlation, by ESWL or by endoscopic lithmripsy eemtinly gives us a w'elcome treatment alternative and is particularly attractive for patients with a high surgical risk :rod Bouveret's syndrome, particularly if no residual gallbladder stones can be demonstrated. References  ( 1 ) Balthazar E J, Schecter LS: Gallst, me liens - the importance ofconn-ast examina- tions in the roemgenographic diagnosis. Am J Roentgenot 1975; 125:374-375. i2~ Clavien p,a Richon J. gurgan S, Rolmer A; Gallstone ileus. Br J Surg 199C,:77:737-742. 13) l)ay EA. Marks C: Gallstone ileus, Review ~1' the literature and presentation f thi~ty-Rmr new eases .  Am J Stn'g 1975:129:552-558. (4~ Dumo, nceau JM. Delhaye M, l)evi&re J. Baize M, Cremer M: Endoscopic treat- ment ol gastric (mtlet obstruction caused by a gallstone (Bouveret's syndrome) after ex~rac~rporal shock-wave lilhotripsy. Endoscopy 1997:29:319-32 I, (5) Holl J. Saekmann M, H,gffmann R, Sehiiss!er P, Sauerbmch T. Jtingst D. Paum- garmer G; Shock-wave therapy of gastric oudet syndrome caused by a gail,,tone. Gastroenterology 1989:97:472-474. (6} Kasaham Y. Umemura H, Shimha S, Kuyama T, Sakata K, Kubola H: Gallstone lleus. Review of 112 patients in the Japanese literature. Am J Smg 1980"140:437- 44(k (7) Mon'issey KP, McSherry CK: hltemat bi!iary fistula nd gallstone iteus, in: Bhmrgart Lit ted): Surgery of the liver. Edinburgh-London-Madrid-Melbourne- New York-Tokyo, Livingsume, t994, pp 909-922. (8) OrMrejka P, Balogh 1. Bodmu' A, Toth CS, Furgacs B, Sugar 1, Failer J: Gasu'ic oat[el obstruction caused by gallstone: Bouveret's syndrome. Acta Chir Austriaca i999;31:48-5 [. (9) Renznlli P. KriihcnbLihl L. Sadow,;ki C, APAdili F. Maurer CA, ,B(icMer MW: M(.u.lerne diagnosdsche Strategic beim Ileus. Zbl Chir 1998 (in press). 10) Rigler t_,G, Be, nnan CN, Noble JF: Gal!stolle obstruction: pathogenesis aP,d ro- entgen manifestations. JAMA lgMi;? 17:1753-1759~ 

Invited commentary to: "Gastric outlet obstruction caused by gallstone: Bouveret's syndrome"

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Invited commentary to: "Gastric outlet obstruction caused by gallstone: Bouveret's syndrome"

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