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Case Reports
. 2014 Jul;4(2):122-4.
doi: 10.4103/2229-5070.138542.

Amoeboma of colon mimicking colonic carcinoma

Kaushik Saha  1 , Moumita Sengupta  2 , Sumit Mitra  2 , Suchandra Ray  2
Affiliations
Case Reports

Amoeboma of colon mimicking colonic carcinoma

Kaushik Saha et al. Trop Parasitol. 2014 Jul.

Abstract

Entamoeba histolytica is a major cause of diarrhea in the developing countries and it can present with a wide range of gastrointestinal symptoms depending on the phase of the infection. We describe a case of 65-year-old male patient presented with abdominal pain and vomiting. On the clinical and radiological examination provisional diagnosis of colonic carcinoma was suspected. After resection of perforated caecal growth, histopathological sections showed numerous trophozoites of E. histolytica in a background of abundant necrosis. This case revealed differentiation between amoeboma and carcinoma is critical.

Keywords: Amoeboma; Entamoeba histolytica; colonic carcinoma.

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Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
H and E stained histological section of amoeboma in the colonic wall demonstrating Entamoeba histolytica parasites in the inflammatory infiltrate (H and E, ×400). Inset showing degenerated E. histolytica containing ingested red blood cells (H and E, ×1000)
Figure 2
Figure 2
Periodic acid-Schiff (PAS) stain showing trophozoites of Entamoeba histolytica (×400, PAS)
See this image and copyright information in PMC

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