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Ileocecal ulceration and granulomatous ileitis as an unusual presentation of typhoid fever

Christopher Cheung, Hayley Merkeley, Jocelyn A. Srigley, Baljinder Salh, Douglas Webber and Stephane Voyer
CMAJ November 06, 2012 184 (16) 1808-1810; DOI: https://doi.org/10.1503/cmaj.120714
Christopher Cheung
From the Division of General Internal Medicine, Department of Medicine (Cheung, Merkeley, Voyer), University of British Columbia, Vancouver, BC; the Department of Pathology and Molecular Medicine (Srigley), McMaster University, Hamilton, Ont.; the Division of Gastroenterology, Department of Medicine (Salh), University of British Columbia; and the Department of Pathology (Webber), University of British Columbia, Vancouver BC
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  • For correspondence: cccheung@interchange.ubc.ca
Hayley Merkeley
From the Division of General Internal Medicine, Department of Medicine (Cheung, Merkeley, Voyer), University of British Columbia, Vancouver, BC; the Department of Pathology and Molecular Medicine (Srigley), McMaster University, Hamilton, Ont.; the Division of Gastroenterology, Department of Medicine (Salh), University of British Columbia; and the Department of Pathology (Webber), University of British Columbia, Vancouver BC
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Jocelyn A. Srigley
From the Division of General Internal Medicine, Department of Medicine (Cheung, Merkeley, Voyer), University of British Columbia, Vancouver, BC; the Department of Pathology and Molecular Medicine (Srigley), McMaster University, Hamilton, Ont.; the Division of Gastroenterology, Department of Medicine (Salh), University of British Columbia; and the Department of Pathology (Webber), University of British Columbia, Vancouver BC
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Baljinder Salh
From the Division of General Internal Medicine, Department of Medicine (Cheung, Merkeley, Voyer), University of British Columbia, Vancouver, BC; the Department of Pathology and Molecular Medicine (Srigley), McMaster University, Hamilton, Ont.; the Division of Gastroenterology, Department of Medicine (Salh), University of British Columbia; and the Department of Pathology (Webber), University of British Columbia, Vancouver BC
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Douglas Webber
From the Division of General Internal Medicine, Department of Medicine (Cheung, Merkeley, Voyer), University of British Columbia, Vancouver, BC; the Department of Pathology and Molecular Medicine (Srigley), McMaster University, Hamilton, Ont.; the Division of Gastroenterology, Department of Medicine (Salh), University of British Columbia; and the Department of Pathology (Webber), University of British Columbia, Vancouver BC
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Stephane Voyer
From the Division of General Internal Medicine, Department of Medicine (Cheung, Merkeley, Voyer), University of British Columbia, Vancouver, BC; the Department of Pathology and Molecular Medicine (Srigley), McMaster University, Hamilton, Ont.; the Division of Gastroenterology, Department of Medicine (Salh), University of British Columbia; and the Department of Pathology (Webber), University of British Columbia, Vancouver BC
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A 55-year-old man presented to hospital with a 2-week history of cyclical fevers, chills, night sweats, decreased appetite and weight loss. Originally from India, the patient had lived in Canada for 25 years, but he had recently returned from a 2-month vacation in Punjab, India. He had not received any vaccinations before travel, nor had he taken any malaria prophylaxis. The patient reported having consumed locally prepared foods and water from untreated sources.

The patient started having fevers (40°C), rigors, night sweats and nonbloody diarrhea during the last week of his vacation. Upon returning to Canada, his diarrhea resolved, and he was given a 3-day course of oral ciprofloxacin for persistent symptoms (i.e., cyclical fevers and night sweats). Despite taking his antibiotic medication, the patient’s symptoms continued; he presented to hospital 1 week after returning to Canada.

The patient’s medical history included type 2 diabetes that was being treated with oral hypoglycemic agents. There was no personal or family history of tuberculosis, sarcoidosis, inflammatory bowel disease, colorectal cancer or HIV. There were no other symptoms of infection, and the patient had not recently been sexually active.

A physical examination showed tachycardia and a fever of 39.6°C. We found no jaundice or palpable lymphadenopathy. An abdominal examination showed mild periumbilical tenderness, but no appreciable mass or organomegaly.

The results of laboratory investigations showed that the patient had a normal white blood cell count (7.8 × 106 cells/L), but that his liver enzyme (alanine transaminase 126 [normal 10–65) U/L, aspartate transaminase 81 [normal 10–38] U/L), l-lactate dehydrogenase (665 [normal 90–240] U/L) and C-reactive protein (85 [normal < 3.1] mg/L) levels were elevated. Cultures of the patient’s stool and blood showed no growth. Smears for ova, parasites and malaria were negative, as were the results of serologic tests for dengue, HIV, syphilis, and hepatitis B and C.

Computed tomography of the patient’s abdomen showed borderline splenomegaly with periaortic, retroperitoneal and mesenteric lymphadenopathy. We saw mucosal thickening at the ileocecal junction. We gave the patient piperacillin–tazobactam (3.375 g intravenously, every 6 h) for presumed intra-abdominal infection.

Subsequent colonoscopy showed ulcerations throughout the colon (Figure 1), raising the possibility of tuberculosis, Crohn disease or Yersinia infection. We thus changed the patient’s medication to doxycycline (100 mg orally, twice daily) and gentamicin (350 mg intravenously, once daily).

Figure 1:
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Figure 1:

Colonoscopic images of the terminal ileum (A) and proximal ascending colon (B) showing discrete transverse ulcers with mildly hypertrophic erythematous margins (arrows).

Biopsies of the patient’s ileum and cecum showed histiocyte-rich granulomatous changes (Figure 2) with areas of central necrosis. The possibility of mycobacterial infection was ruled out with further investigations: a tuberculin skin test, two Ziehl–Neelsen stains of the ileal and cecal tissue samples and a polymerase chain reaction (PCR) test for Mycobacterium species returned negative results. Cultures of the cecal aspirate showed no growth of Mycobacterium tuberculosis. In addition, cold enrichment culture for Yersinia on stool specimens showed no growth.

Figure 2:
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Figure 2:

Microscopy (hematoxylin and eosin stain, 200× magnification) of ileal mucosal biopsy (A) and cecal mucosal biopsy (B) showing histiocyte-rich granulomatous changes with central necrosis (arrows).

One week after the patient’s admission to hospital, a repeat stool culture grew Salmonella enterica serotype Typhi (susceptible to ampicillin, ceftriaxone and trimethoprim/ sulfamethoxazole), confirming a diagnosis of typhoid fever. We gave the patient ceftriaxone, and his symptoms improved quickly; after 48 h, the patient had been afebrile for 24 h.

Discussion

Typhoid fever is a systemic illness predominantly characterized by fever and abdominal pain.1 Humans are the sole reservoir of the responsible organism, S. enterica serotype Typhi. In Ontario alone, the incidence is about 50–73 cases per year. Most cases occur in travellers returning from endemic areas, such as India, Mexico and the Philippines.2,3 Vaccination with the Vi or attenuated Ty21a vaccine before travel to endemic areas may protect against typhoid fever; however, travellers should be advised to maintain food and water precautions.2

Symptoms of typhoid fever typically develop 5–21 days after ingesting contaminated food or water. Classical descriptions of acute typhoid fever identify a stepwise progression of clinical findings over 3 weeks, beginning with fever and relative bradycardia within the first week of illness.4 Abdominal pain and a rash characterized by rose or salmon-coloured macules on the trunk and abdomen may develop during the second week. Hepatosplenomegaly, intestinal bleeding and perforation secondary to ileocecal lymphatic hyperplasia may occur during the third week.4 Presentation varies with age, geography, serotype and the size of inoculum.5 It is diagnosed when S. enterica serotype Typhi is cultured from blood, stool, urine, rose spots, duodenal contents or bone marrow from patients presenting with a concomitant clinical illness consistent with typhoid fever.4

Typhoid fever commonly affects the lymphoid tissue within the ileum, appendix and right colon. Histologically, the affected areas are characterized by aphthous ulcers, hyperplasia of Peyer’s patches, crypt abscesses and marked architectural distortion that may lead to full-thickness ulceration and necrosis.4 Common colonoscopic manifestations of typhoid fever include punched-out ulcerations of various sizes, edematous hyperemic mucosal patches and active bleeding.6 We saw similar ileocecal and colonic ulcerations on colonoscopy; however, we also found granulomas on biopsy in the absence of mycobacterial infection.

Intestinal granulomas

Typical diseases that produce intestinal granulomas include abdominal tuberculosis, sarcoidosis, Crohn disease and, occasionally, Yersinia infection.7 Although intestinal granulomas are rarely seen in typhoid fever, extraintestinal granulomatous changes have been documented (Appendix 1, available at www.cmaj.ca/lookup/suppl/doi:10.1503/cmaj.120714/-/DC1). Reports of granulomas in the liver, bone marrow and spleen with typhoid fever have been published previously.8 An account of cutaneous granulomata associated with the typhoid–paratyphoid heat-killed vaccine has also been reported.9

Previously reported histopathologic findings associated with typhoid enteritis include hypertrophy of the ileal mucosa and neutrophil-poor, monocyte/macrophage-rich mucosal infiltrates.10 However, there are only 2 case reports of intestinal granulomatous changes in patients with typhoid fever. Reyes and colleagues described colonic granulomas with large multinucleated cells in a patient whose bone marrow tested positive for S. enterica serotype Typhi.11 Similarly, Bharadwaj and coauthors described necrotizing and non-necrotizing granulomas in a biopsy from the ileocolic junction of a patient confirmed to have S. enterica serotype Typhi.12

Neither of these previous case reports explicitly excluded the possibility of intestinal tuberculosis as a cause of the granulomatous changes seen, either with PCR testing or by culturing mycobacteria. PCR testing for mycobacteria is more sensitive than traditional microscopy, with a sensitivity for detecting intestinal tuberculosis of 86%, and a specificity approaching 100%.13 In our patient’s case, we ruled out active mycobacterial infection after samples of ileal and cecal tissue showed negative results for stains for acid-fast bacilli and PCR testing for mycobacteria. Furthermore, our patient had a negative result on his tuberculin skin test. Discrete intestinal granulomatous changes in the context of typhoid fever and the absence of mycobacterial disease is a novel finding.

Conclusion

This case report shows the importance of considering typhoid fever as a cause of ileocecal ulceration and granulomatous changes in the gastrointestinal tract of patients presenting with a fever of unknown origin, particularly if they are returning from areas where S. enterica serotype Typhi is prevalent.

Key points
  • Typhoid fever is an important consideration in patients with fever of unknown origin, particularly in travellers returning from endemic areas.

  • It commonly affects the lymphoid tissue of the ileum, appendix and right colon, with ulceration and bleeding seen on colonoscopy.

  • It may be associated with granulomatous ileitis, although intestinal tuberculosis needs to be ruled out.

For more information on the diagnosis and management of typhoid fever, see Beaulieu AA, Boggild AK. CMAJ 2011;183:1740–5 (available at www.cmaj.ca/lookup/doi/10.1503/cmaj.101320).

Footnotes

  • Competing interests: None declared.

  • This article has been peer reviewed.

  • Contributors: All of the authors contributed to the conception and design of the article, collected and interpreted the data, drafted the article and revised it for important intellectual content and approved the final version submitted for publication.

References

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Canadian Medical Association Journal: 184 (16)
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Ileocecal ulceration and granulomatous ileitis as an unusual presentation of typhoid fever
Christopher Cheung, Hayley Merkeley, Jocelyn A. Srigley, Baljinder Salh, Douglas Webber, Stephane Voyer
CMAJ Nov 2012, 184 (16) 1808-1810; DOI: 10.1503/cmaj.120714

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Ileocecal ulceration and granulomatous ileitis as an unusual presentation of typhoid fever
Christopher Cheung, Hayley Merkeley, Jocelyn A. Srigley, Baljinder Salh, Douglas Webber, Stephane Voyer
CMAJ Nov 2012, 184 (16) 1808-1810; DOI: 10.1503/cmaj.120714
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