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Updated: Mar 15, 2026

Using Eggs from Schistosoma mansoni as an In vivo Model of Helminth-induced Lung Inflammation
Published on: June 5, 2012
Ultrasonographic Diagnosis of Schistosoma mansoni Eggs in Rectum
Fabio G Rodrigues1, Joao Batista Campos2, Nivaldo Hartung Toppa3
1Department of Colorectal Surgery, Cleveland Clinic Florida, Weston, FL 33331, USA; Endoscopia Clínica e Cirúrgica, 30150-270 Belo Horizonte, MG, Brazil; CNPq, 71605-001 Brasilia, DF, Brazil.
Abstract:
Schistosomiasis is a trematode infection endemic in more than 70 countries that affects an estimated 250 million people. We report the case of a 60-year-old healthy female referred for endoscopic ultrasound after rectal examination revealed granular lesions. Ultrasound revealed the presence of deep mucosal nodular lesions with calcified/hyperechoic inclusions. Histologic evaluation has confirmed the final diagnosis of chronic schistosomal colitis. In patients with nonspecific intestinal lesions without a suspected diagnosis of schistosomiasis, endoscopic ultrasound can be enlightening. Schistosomiasis is still an endemic infection in some parts of Brazil and other tropical regions, causing colorectal lesions with unspecific presentation.
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