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The British Journal of Radiology, Vol 73, Issue 867 328-332, Copyright © 2000 by British Institute of Radiology

ARTICLES

Ultrasound diagnosis of oesophagostomiasis

PA Storey, S Anemana, JA van Oostayen, AM Polderman and P Magnussen
Parasitology Department, Leiden University Medical Centre, The Netherlands.

Human infection with Oesophagostomum bifurcum, a parasitic intestinal helminth, is endemic in parts of West Africa. Oesophagostomum bifurcum juveniles develop in the colonic wall, causing pus-filled granulomas. The pathology has two distinct forms. Multinodular oesophagostomiasis comprises hundreds of small nodules within a thickened, oedematous wall of the large intestine. Uninodular oesophagostomiasis, called the Dapaong tumour, presents as a painful 30-60 mm granulomatous mass in the abdominal wall or within the abdominal cavity. Diagnosis of oesophagostomiasis on clinical grounds alone is difficult. We describe cases illustrating the ultrasound appearance of these two presentations. Multinodular disease shows nodular "target" and "pseudokidney" colonic lesions. The Dapaong tumour is an echo-free ovoid lumen enveloped within a well defined poorly reflective wall.


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P A STOREY, G FAILE, D CRAWLEY, J A VAN OOSTAYEN, S ANEMANA, P A STOREY, A M POLDERMAN, and P MAGNUSSEN
Ultrasound appearance of preclinical Oesophagostomum bifurcum induced colonic pathology
Gut, April 1, 2001; 48(4): 565 - 566.
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