Amoeboma of colon mimicking colonic carcinoma

Kaushik, Sushmita; Sengupta, Moumita; Mitra, Sumit; Ray, Suchandra

doi:10.4103/2229-5070.138542

Cited by 12 publications

(5 citation statements)

References 6 publications

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“…[ 5 ] Hence, in elderly individual, ameboma can be misdiagnosed as colonic carcinoma. [ 3 6 7 ] Radiologic examination in our patient revealed concentric thickening of the bowel wall and its ring-like stenosis in association with a mesenteric reaction and small bowel feces sign, i.e., presence of feces such as material admixed with gas bubbles in the lumen of dilated loops of small bowel proximal to the site of obstruction. All these features pointed to mass-like lesion in colon, as a cause of obstruction that mimicked colon cancer.…”

Section: Discussionmentioning

confidence: 73%

“…Ochsner and Debakey formulated that the term “ameboma” originally described as amebic granuloma by Gunn and Howard. [ 3 ] Ameboma of the large bowel is a rare condition that occurs in 1.5% of all cases with invasive amebiasis characterized by mass of granulation tissue with peripheral fibrosis and a core of inflammation related to chronic amebic infection. [ 2 ] Untreated or partially treated infections with E. histolytica may lead to the development of tumor-like exophytic and inflammatory masses involving the whole thickness of bowel wall and may extend into surrounding structures.…”

Section: Discussionmentioning

confidence: 99%

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Ameboma of colon simulating colonic adenocarcinoma

Kataria

Seth

Attri

et al. 2018

Int J App Basic Med Res

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Amebiasis is common in tropical and developing countries with variable symptoms. Ameboma of the colon occurs rarely due to the annular growth of granulation tissue and can present as mass lesion simulating colonic carcinoma in elderly individuals. Due to diagnostic dilemma or in case of complications, for example, acute intestinal obstruction, perforation, or bleeding per rectum, the patient requires urgent surgical exploration and final diagnosis is made on histopathological examination.

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Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Ameboma of colon simulating colonic adenocarcinoma

Kataria

Seth

Attri

et al. 2018

Int J App Basic Med Res

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“…Few similar case reports, where colonic amebiasis, mimicked an obstructing right‐sided colonic carcinoma have been reported in literature [ 7 – 11 ]. In México, Rodea and Cols analyzed 25 840 urgent abdominal surgeries from 1970 to 2007, with 129 cases with colonic complications secondary to amebiasis.…”

Section: Discussionmentioning

confidence: 99%

Cecal ameboma mimicking obstructing colonic carcinoma

Almalki¹,

Yaseen²

2018

Journal of Surgical Case Reports

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Ameboma is a mass of granulation tissue with peripheral fibrosis and a core of inflammation related to amebic chronic infection. The initial presentations of colonic ameboma usually include obstruction and low gastrointestinal bleeding. It may mimic colon carcinoma or other granulomatous inflammatory conditions of the colon in both the clinical presentation and the endoscopic appearance. Here, we report a case of a 45-year-old male with a presentation of abdominal pain and constipation, as well as clinical, radiological and endoscopic presentation resembling colonic carcinoma, that was managed operatively with right hemicolectomy and post-operative histopathologic finding of cecal ameboma.

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“…A case report from India described a patient with clinical and radiological suspicion of colonic carcinoma. However, after resection of perforated cecum, histopathological examination showed numerous trophozoites of E. histolytica in a background of abundant necrosis [ 36 ]. This case suggests that the differentiation between ameboma and carcinoma is critical.…”

Section: Discussionmentioning

confidence: 99%

Clinical manifestations and endoscopic findings of amebic colitis in a United States-Mexico border city: a case series

et al. 2015

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BackgroundInvasive amebiasis is not frequently seen in the United States. It is associated with considerable morbidity in patients residing in or traveling to endemic areas. We report a case series of patients with amebic colitis in a United States-Mexico border city to alert physicians to the varied clinical manifestations.Case presentationNine patients were diagnosed with amebic colitis. Mean age was 56 (38–83), 6 were males, and all were Hispanic. Common symptoms were diarrhea (56 %), hematochezia (33 %) and abdominal bloating (11 %). The diagnosis of amebic colitis was established in the following ways: 8 patients by colonoscopy with biopsy, 1 by surgery for colonic obstruction. The diagnosis of amebic colitis was confirmed in 8 patients (89 %) by amebic trophozoites present in histopathologic sections. One patient was diagnosed with amebic colitis based upon clinical symptoms, colitis on colonoscopy and visualization of amebic trophozoites on stool examination. In the 8 patients in whom colonoscopy was done, 6 (75 %) had inflammation with rectosigmoid involvement and 5 (62.5 %) had ulcerations. Infection resolved after treatment with metronidazole in most patients; however, one patient developed a liver abscess and another had a colonic perforation and later developed a liver abscess.ConclusionThe occurrence of amebic colitis in this United States-Mexico border city hospital population was low, but in some cases potentially life-threatening. Physicians should be alert to the less common presentations of amebic colitis, such as overt gastrointestinal bleeding, exacerbation of inflammatory bowel disease, and the incidental finding of association with colon cancer, or a surgical abdomen. Rectosigmoid involvement was typically found on colonoscopy.

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Amoeboma of colon mimicking colonic carcinoma

Cited by 12 publications

References 6 publications

Ameboma of colon simulating colonic adenocarcinoma

Ameboma of colon simulating colonic adenocarcinoma

Cecal ameboma mimicking obstructing colonic carcinoma

Clinical manifestations and endoscopic findings of amebic colitis in a United States-Mexico border city: a case series

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