الفهرس 
Review of LiteratureOnly 14 pages are availabe for public view
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Abstract
Sun ary & Conclusion
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Schistosomiasis is 0 e of the worlds formest health
problem in Egypt, App oximatly 20 million individuals
are suffering from sc istosomiasis (Abdel Wahab et ai,
1979)
The aim of this work was to answer the question whether
schistosomiasis mans ini is present in Upper Egypt
(Sahag Province)
The work also eva uates the diagnostic value of
sigmoidoscopy with re tal snip in this respect •
The work show that t e prevalence rate of s. mansoni
was (17.3 %), s. haem tobium was (38.2 %) and that of
double infection was 8 %). This high prevalence of
masoniasis was not ex ected, though, the presence of the
infection was almost ertain
This is because the inistry of Health had found the
snail of infection in the north of Upper Egypt early in
1955.
The present work, th rfore, is pioneering in recording
the presence of s. ma soni in High Upper Egypt (Sohag
~.. _- --_._-----
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Province> _
Attention of research workers and those who are actualy
fighting schis. in the field must be attracted to tackle
the spread of the infection •
The relative sinsitivity of rectal snip over stool
examination was almost double (1.85) in diagnosis of
schis. and (1.64) in diagnosis of s. mansoni •
The work also show that the sensitivity of rectal snip
in diagnosis of s. mansoni at 10 cm. level equals 100 %
Specificity equals 100 % & the predictive value equals
61.8 % •
This means that rectal biopsy is the best definitive
diagnosis of schistosomiasis infection specially if the
infection is very light or even asymptomatic
This is because rectal snip is highly sensitive,
specific and relatively cheap prosedure & is safe thus
fulfilling all the criteria necessary for detecting
schistosomiasis mansoni .