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Idiopathic adult ileoileal and ileocolic intussusception in situs inversus totalis: a rare coincidence.
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MedLine Citation:
PMID:  22249097     Owner:  NLM     Status:  MEDLINE    
Situs inversus totalis is a rare autosomal recessive congenital anomaly that is characterized by mirror image anatomy of the abdominal and thoracic organs. We report a case of a 28-year-old male with situs inversus totalis, who developed an idiopathic ileoileal and ileocolic intussusception, which was diagnosed on computed tomography scan. Patient underwent successfully ileal resection and side-to-side functional anastomosis of ileum 12 cms from ileocecal junction. Postoperative course was uneventful. To the best of our knowledge, this is the first case of idiopathic adult intussusception with situs inversus totalis in the literature.
Nazish Butt; Syed H Shah; Abdul R Alvi; ; Saba Hassan
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association     Volume:  18     ISSN:  1998-4049     ISO Abbreviation:  Saudi J Gastroenterol     Publication Date:    2012 Jan-Feb
Date Detail:
Created Date:  2012-01-17     Completed Date:  2012-07-19     Revised Date:  2013-06-26    
Medline Journal Info:
Nlm Unique ID:  9516979     Medline TA:  Saudi J Gastroenterol     Country:  India    
Other Details:
Languages:  eng     Pagination:  68-70     Citation Subset:  IM    
Department of Medicine, Section of Gastroenterology, Aga Khan University Hospital, Stadium Road, Karachi, Pakistan.
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MeSH Terms
Colonic Diseases / radiography*,  surgery
Diagnosis, Differential
Ileal Diseases / radiography*,  surgery
Intussusception / radiography*,  surgery
Situs Inversus / complications*
Tomography, X-Ray Computed*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Full Text
Journal Information
Journal ID (nlm-ta): Saudi J Gastroenterol
Journal ID (publisher-id): SJG
ISSN: 1319-3767
ISSN: 1998-4049
Publisher: Medknow Publications & Media Pvt Ltd, India
Article Information
Copyright: © Saudi Journal of Gastroenterology
Received Day: 23 Month: 11 Year: 2010
Accepted Day: 26 Month: 2 Year: 2011
Print publication date: Season: Jan-Feb Year: 2012
Volume: 18 Issue: 1
First Page: 68 Last Page: 70
ID: 3271699
Publisher Id: SJG-18-68
PubMed Id: 22249097
DOI: 10.4103/1319-3767.91732

Idiopathic Adult Ileoileal and Ileocolic Intussusception in situs Inversus Totalis: A Rare Coincidence
Nazish Buttaff1
Syed H. Shahaff1
Abdul R. Alvi1
Saba Hassan3
Department of Medicine, Section of Gastroenterology, Aga Khan University Hospital, Stadium Road Karachi, Pakistan
1Department of Surgery, Aga Khan University Hospital, Stadium Road Karachi, Pakistan
2Department of Radiology, Aga Khan University Hospital, Stadium Road Karachi, Pakistan
3Department of Pathology, Aga Khan University Hospital, Stadium Road Karachi, Pakistan
Correspondence: Address for correspondence: Dr. Syed H. Shah, Kamruddin Mohamed Jassani Professor of Medicine, Head Section of Gastroenterology, The Aga Khan University, Karachi, Pakistan. E-mail:

The term situs inversus is a short form of the Latin phrase “situs inversus viscerum,” meaning “inverted position of the internal organs.”[1] Situs inversus is generally an autosomal recessive, although it can be X-linked genetic disorder with an incidence of 1 in 10,000.[2] Patients with situs anomalies have a variety of gastrointestinal abnormalities. Gastric volvulus, malrotation anomalies, duodenal atresia or stenosis, gastroschisis, hiatal hernia, appendicitis, polysplenia, biliary atresia, and short pancreas have been reported in the literature.[3] The association of idiopathic adult intussusception with situs inversus totalis is not reported in the literature. Adult intussusception is rare representing 5% of all cases of intussusception and accounts for only 1-5% of intestinal obstruction in adults.[4]

We report a case of idiopathic ileoileal and ileocolic intussusception associated situs inversus totalis.


A 28-year-old male patient presented to the emergency department with a 3 day history of lower abdominal pain and bloody diarrhea. He was already a diagnosed case of situs inversus totalis on the basis of chest X-ray and ultrasound abdomen, co-incidentally. His past medical history was significant for similar episodes of abdominal pain and bloody diarrhea for last 2 years. On clinical examination, he was alert, afebrile, and mildly pale. Abdominal examination revealed mild left iliac fossa tenderness. There was no palpable lump, guarding or rigidity. Bowel sounds were audible on auscultation. On per rectal examination, stools were absent. Rest of the examination was unremarkable. Initial laboratory tests revealed serum hemoglobin of 7.5 g/dl, hematocrit 25.6%, serum iron of 8 mcg/dl, total iron binding capacity of 379 mcg/dl, and ferritin of 5.66 ng/ml. The platelet count, prothrombin time, and liver function tests were normal. Plain abdominal radiograph revealed minimal air in large intestine; findings representative of subacute distal small bowel obstruction. Ultrasound of abdomen revealed minimal streak of free fluid in Morrison's pouch. His pain subsided after receiving intravenous analgesics, antibiotics, and fluids. During hospitalization, the patient had two episodes of hematochezia and severe abdominal pain. Plain abdominal radiograph during the episode of abdominal pain was normal. On the third day of admission, colonoscopy was performed with cecal intubation time of 5 min. It revealed 1-2 cm ileal ulcer. Computed tomography (CT) scan of the abdomen showed situs inversus totalis (the apex of the heart, stomach, and spleen resting on the right side and the liver on the left side of the abdomen) and ileocolic intussusception giving the appearance of bowel within bowel associated with minimal free fluid in pelvis [Figures 1 and 2]. No evidence of proximal bowel obstruction was noted. Patient underwent an exploratory laparotomy and operative findings were ileoileal and ileocolic intussusception, through cecum up to transverse colon. There was no evidence of bowel ischemia. Retrograde reduction and segmental resection of ileum 12 cm from ileocecal junction was done which contained a polypoidal mass. Anatomical side-to-side but functionally end to end anastomosis was performed with mechanical GIA-75 single use stapler with absorbable staples. Appendicectomy was performed as well. The gross specimen showed inflammatory pseudo polyps [Figure 3]. Histopathology showed a small intestinal tissue exhibiting numerous inflammatory pseudopolyps projecting above the mucosal surface composed almost entirely of inflamed granulation tissue with surface ulceration. Crypts are dilated and hyperplasic [Figure 4]. The postoperative period was uneventful. After 3 months of follow up patient is fine and has no bowel symptoms till date.


Patients with situs inversus totalis are usually asymptomatic, healthy and have a normal life expectancy.[5] Situs inversus is associated with Kartagener syndrome, congenital heart diseases and gastrointestinal anomalies.[3, 6] The control of normal human somatic asymmetry is not yet known. Environmental factors, including exposure to retinoic acid and maternal diabetes, have been implicated in laterality defects among offspring of affected parents.[7] Situs inversus and intestinal intussusception has been reported in a dog in the literature.[8] Although there are several case reports in the literature explaining idiopathic adult intussusception and situs anomalies independently, to the best of our knowledge, the association of idiopathic adult intussusception with situs inversus totalis has not been previously reported in the literature.

In adults, intussusception is rare, and the diagnosis is not typically at the top of the differential list. The patient typically presents with nonspecific abdominal pain, cramping and with an acute or chronic obstruction.[9] Most adult intussusceptions are enteric and benign in origin. Unlike the more common idiopathic intussusception found in children, intussusception in adults remains a surgical disease. Idiopathic adult intussusception is more likely to occur in the small intestine than in the colon.[10, 11]

In this case, the histopathology report was suggestive of inflammatory pseudo polyps projecting above the mucosal surface. The inflammatory pseudo polyps were formed as a result of intermittent intussusception.

The association of intestinal intussusception with situs inversus totalis remains unknown. Yui Mano et al. reported some unusual arrangement of intestinal loops along the jejunum, ileum and at the terminal ileum (8 cm oral from the ileocecal valve) in male cadaver with situs inversus totalis.[12] It can be hypothesized that decreased rigidity in the wall of the cecum or some variation in the anatomy of the ileocecal valve in the situs inversus totalis patients make it more prone to prolapse.

Plain abdominal films and ultrasonography are typically the initial investigations for the evaluation of abdominal symptoms.[13] However, these were not found to be useful in this case. Abdominal CT scan is currently considered as the most sensitive radiological method to confirm intussusception. Most cases of intussusception found on CT are not suspected clinically. The characteristic features of CT scan include an inhomogeneous “target” or “sausage”-shaped soft- tissue mass with a layering effect.[14] Colonoscopy is considered invaluable in evaluating cases of intussusception presenting with subacute or chronic large bowel obstruction. However, we can localize the disease and be able to demonstrate the underlying pathology.[13, 15] Colonoscopy is considered challenging and difficult in situs inversus totalis due to complete left-right reversal of the internal organs. Dong Hyun Choi et al. reported prolonged cecal intubation time in SIT.[16] We found colonoscopy very feasible in context to situs inversus totalis in this patient. The surgical options are not different in situs inversus totalis patients. Many procedures such as choloecystectomy, appendectomy, sigmoidectomy, gastrectomy, Roux-en-Y bypass, gastric banding, Nissen fundoplication, and hemicolectomy have been performed.[17]

In conclusion, we reported an adult case of situs inversus totalis with an idiopathic ileoileal and ileocolic intussusception not previously described. The mirror-image anatomy does not pose an unusual technical challenge in colonoscopy and surgery, although care should be taken when making a diagnosis in patients with situs inversus totalis because of the unusual location of the major organs. Abdominal CT is considered as the most sensitive imaging modality in the diagnosis of intussusception.


Source of Support: Nil

Conflict of Interest: None declared.

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[Figure ID: F1]
Figure 1 

Contrast-enhanced CT scan of the abdomen demonstrated situs inversus totalis with apex of the heart, stomach and spleen resting on the right side and the liver on the left side of the abdomen and ileocolic intussusception which creates characteristic bowel-within-bowel appearance, seen in left iliac fossa (white arrow)

[Figure ID: F2]
Figure 2 

Contrast-enhanced CT scan of the abdomen demonstrated the classic findings of a target like an ileocolic intussusception, with no evidence of proximal bowel obstruction in situs inversus totalis (white arrow)

[Figure ID: F3]
Figure 3 

The resected ileum specimen shows inflammatory pseudo polyps (black arrow)

[Figure ID: F4]
Figure 4 

Histopathology showing inflammatory pseudopolyps projecting above the mucosal surface composed of inflamed granulation tissue with surface ulceration and dilated and hyperplasic crypts

Article Categories:
  • Case Report

Keywords: Colonoscopy, computed tomography, idiopathic adult intussusception, situs inversus totalis.

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