Diagnostic Findings [Last Modified: ]
Schistosomiasis
[Schistosoma mansoni] [Schistosoma haematobium]
[Schistosoma japonicum] [Schistosoma mekongi]
[Schistosoma intercalatum]

Causal Agent Life Cycle Geographic Distribution Clinical Features Laboratory Diagnosis Treatment

Microscopy

Schistosoma haematobium

S. haematobium eggs S.haematobium egg
N O

S. haematobium egg S. haematobium egg
P Q

N, O, P, Q: Schistosoma haematobium eggs.  In this species, the eggs are large and have a prominent terminal spine at the posterior end.  Length 112 to 170 µm.  In Figure O, the miracidium is shown inside the egg.

Schistosoma mekongi and Schistosoma intercalatum

S. mekongi egg S. interculatum egg
R S

R: Schistosoma mekongi egg.
S: Schistosoma interculatum egg.

Cross-sections of human tissues with Schistosoma spp. eggs

S. mansoni eggs in intestinal wall S. japonicum eggs in colon S. japonicum eggs in liver
T U V

Schistosomiasis in liver Schistosomiasis in bladder
W X

T, U, V, W, X: Cross-section of different human tissues showing Schistosoma sp. eggs.
T: Schistosoma mansoni eggs in intestinal wall.
U: Schistosoma japonicum eggs in colon
V: Schistosoma japonicum eggs in liver.
W, X: Schistosoma sp. in liver and bladder, respectively.

Back Top
Previous Page  Page 2 of 2