Colonic bilharzioma - dramatic complication of schistosomiasis: report of ten cases

ABSTRACT

Bilharzioma implies a localized mass of fibrous and inflammatory tissue, which usually contains many eggs, frequently involving serosa and mesentery. Bilharzioma is probably caused by reaction to numerous eggs produced by one or more pair of worms in a single site. The aim of this study is to present the management of a group of patients had colonic bilharzioma presented with abdominal masses and intestinal obstruction. Ten patients presented with abdominal masses and intestinal obstruction. Complete blood count, urinalysis, stool analysis, and abdominal ultrasonography done in all the patients of the study. Barium enema done in 5 patients. Abdominal computed tomography done in 6 patients. All the patients of the study had been subjected to laparotomy. There were 7 males and 3 females, their ages ranged from 8 to 42 years [mean 14.2 years]. All the patients had abdominal pain [100%], 6 patients presented with abdominal mass [60%], and 4 patients presented with intestinal obstruction [40%]. There was microcytic hypochromic anemia in 9 patients [90%] and leukocytosis with eosinophilia in 7 patients [70%]. Abdominal US revealed presence of lymphoma versus teratoma in 6 patients [60%] and signs of intestinal obstruction in 4 patients [40%]. Barium enema revealed presence of multiple polyps throughout rectosigmoid colon, with loss of haustrations and spasm of descending colon in 3 cases. CoIonic wall thickening with narrowing and rigidity of the ascending colon in 2 cases. Abdominal CT revealed presence of colonic wall masses suggestive of lymphoma in 6 cases. In laparotomy, there were 4 rectosigrnoid bilharzioma, bilharzioma of the transverse colon down to the upper rectum in 3 patients and ascending colonic bilharzioma in 3 cases. Histopathology confirmed presence of bilharzial granuloma in all surgical specimens. Always consider bilharzioma in differential diagnosis of abdominal masses and intestinal obstruction, especially in countries where it is endemic. Rectal examination is an important and integral part of abdominal examination in such cases and biopsy is a must in presence of palpable nodules