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IMAGES IN RADIOLOGY
Year : 2005  |  Volume : 51  |  Issue : 2  |  Page : 131-132

Extraluminal gallstone causing bowel obstruction


1 Department of Radiology, Leicester Royal Infirmary, Leicester LE1 5WW, United Kingdom
2 Glenfield Hospital, Groby Road, Leicester LE3 9QP, United Kingdom
3 Leicester Royal Infirmary, Leicester LE1 5WW, United Kingdom

Date of Submission27-Jun-2004
Date of Decision08-Aug-2004
Date of Acceptance17-Aug-2004

Correspondence Address:
R Sinha
Department of Radiology, Leicester Royal Infirmary, Leicester LE1 5WW
United Kingdom
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Source of Support: None, Conflict of Interest: None


PMID: 16006709

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How to cite this article:
Sinha R, Verma R, Tyagi R. Extraluminal gallstone causing bowel obstruction. J Postgrad Med 2005;51:131-2

How to cite this URL:
Sinha R, Verma R, Tyagi R. Extraluminal gallstone causing bowel obstruction. J Postgrad Med [serial online] 2005 [cited 2019 Nov 11];51:131-2. Available from: http://www.jpgmonline.com/text.asp?2005/51/2/131/16380


A 60-year-old woman presented to the Accident and Emergency department of our institute with symptoms of abdominal pain, distension, pyrexia, and malaise. Blood tests revealed a raised white cell count. The symptoms had started 48 hours earlier and gradually worsened. The patient had not had a bowel motion for the last 3 days. The initial clinical diagnosis was that of acute bowel obstruction. The patient did not have any significant medical history although she had had a laparoscopic cholecystectomy 14 years ago.

Plain radiograph of the abdomen, ultrasound examination and multidetector row CT (MDCT) scan of the abdomen and pelvis were performed.


 :: Discussion Top


Plain radiograph of the abdomen revealed dilated small bowel loops in the pelvis and right lower quadrant (RLQ) with a calcific opacity in the right lumbar region [Figure - 1]. The ultrasound examination showed a hypoechoic collection in the RLQ [Figure - 2]. A presumptive diagnosis of appendicitis with a contained appendicolith was made. The possibility of an inflamed Meckel's diverticulum with contained enterolith was also considered as a differential diagnosis.

MDCT scan of the abdomen and pelvis confirmed the presence of a calcific opacity with associated mesenteric stranding and a small collection [Figure - 3]. Reformatted (1 mm) MDCT images in the sagittal and coronal planes showed the inflammatory mass to be extra-luminal and posterior to the terminal ileum [Figure - 4], [Figure - 5]. The appendix was normal and there was no evidence of any small bowel diverticula. A diagnosis of small bowel obstruction due to an inflamed, dropped gallstone was made.

At surgery, a calculus with surrounding inflammation was found adherent to the distal terminal ileum. There was also a small purulent collection around the terminal ileum. The calculus was removed and the collection was drained surgically. On examination the calculus was found to be of a mixed bilirubinate composition.

Laparoscopic cholecystectomy is now increasingly used for treatment of acute cholecystitis due to its low overall complication rates as compared to that of the open surgical approach. However, two complications occur more frequently with the laparoscopic technique; first, there is an increased incidence of bile duct injury, and secondly an increased incidence of gall bladder perforation with resultant bile leakage and spillage of gallstones. The incidence of gall bladder perforation during laparoscopic cholecystectomy is estimated at 15-30%. The incidence of dropped gallstones is estimated at 10-12%. Late complications of dropped gallstones, such as abscess formation are actually quite rare (0.3%) and can occur years after the procedure.[1] Bilirubinate stones are more likely to cause infectious complications as they often contain viable bacteria.

Inflammation and abscess formation usually occurs in the subhepatic space or in the retroperitoneum below the subhepatic space. Unusual locations have also been reported which include subphrenic space, right thorax, at trocar sites, pouch of Douglas and the ovary.[2]-[3] The varying locations of dropped gallstones are due to the employment of pneumoperitoneum and peritoneal irrigation during the surgical procedure. The reported time range for abscess formation due to a spilled gallstone is between 4 months to 10 years. CT and ultrasound imaging are reliable in the diagnosis of the complications of dropped gallstones. [4],[5],[6]

In summary, we report a case of a dropped gallstone, which being in a slightly atypical anatomical location raised the differential diagnosis of Meckel's diverticulitis and appendicitis. The multiplanar imaging capability available with MDCT was crucial in reaching the correct diagnosis. We emphasize that the finding of a collection with contained calculus within the abdomen or pelvis should alert radiologists to the possibility of an inflamed, dropped gallstone even years after surgery.



 
 :: References Top

1.Schafer M, Suter C, Klaiber C, Wehrli H, Frie E, Krahenbuhl L. Spilled gallstones after laparoscopic cholecystectomy: A relevant technique? A retrospective analysis of 10174 laparoscopic cholecystectomies. Surg Endosc 1998;12:305-9.  Back to cited text no. 1    
2.Horton M, Florence MG. Unusual abscess patterns following dropped gallstones during laparoscopic cholecystectomy. Am J Surg 1998;175:375-9.  Back to cited text no. 2  [PUBMED]  [FULLTEXT]
3.Frola C, Cannici F, Cantoni S, Tagliafico E, Luminati T. Peritoneal abscess formation as a late complication of gallstones spilled during laparoscopic cholecystectomy. Br J Radiol 1999;72:201-3.  Back to cited text no. 3  [PUBMED]  [FULLTEXT]
4.Morrin M, Kruskal J, Hochman M, Saldinger P, Kane R. Radiological features of complications arising from dropped gallstones in laparoscopic cholecystectomy patients. Amer J Roentgenol AJR 2000;174:1441-5.  Back to cited text no. 4    
5.Bennett AA, Gilkeson RC, Haaga JR, Makkar VK, Onders RP. Complications of "dropped" gallstones after laparoscopic cholecystectomy: Technical considerations and imaging findings. Abdom Imaging 2000;25:190-3.  Back to cited text no. 5  [PUBMED]  [FULLTEXT]
6.Anagnostopoulos GK, Sakorafas G, Kolettis T, Kotsifopoulos N, Kassaras G. A case of gallstone ileus with an unusual impaction site and spontaneous evacuation. J Postgrad Med 2004;50:55-6.  Back to cited text no. 6    


Figures

[Figure - 1], [Figure - 2], [Figure - 3], [Figure - 4], [Figure - 5]



 

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Online since 12th February '04
2004 - Journal of Postgraduate Medicine
Official Publication of the Staff Society of the Seth GS Medical College and KEM Hospital, Mumbai, India
Published by Wolters Kluwer - Medknow