Schistosoma haematobium causes urinary 
schistosomiasis.In chronic cases, bladder carcinoma can 
occur, and bladder calcification can result in extensive 
fibrosis that causes the bladder to lose contractility.1
S. haematobium can be found in semen samples in 
43% of affected men indicating a genitourinary clinical 
presentation.1,2 Bladder cancer is the most common 
cancer in men living in Egypt and may be related to the 
prevalence of long-term S. haematobium infections.1
From 1994 through 1996, 16% of bladder cancers in the 
Egyptian population were associated with chronic S. 
haematobium infection.2
3.Schistosoma 
mansoni and Schistosoma japonicum cause intestinal 
and hepatic schistosomiasis;3 S. haematobium results in 
urinary schistosomiasis.