The type of schistosomiasis that a patient has can often be determined by evaluating the eggs being excreted in stool or urine.
Species:
(1) Schistosoma haematobium
(2) Schistosoma intercalatum
(3) Schistosoma japonicum
(3) Schistosoma mansoni
(5) Schistosoma mekongi
Parameters:
(1) shape
(2) length in microns
(3) type and location of spine
Species |
Shape |
Length in Microns |
Spine |
S. mekongi |
round |
66 |
lateral, small |
S. japonicum |
round |
100 |
lateral, small |
S. mansoni |
ovoid |
140 |
lateral, prominent |
S. haematobium |
ovoid |
150 |
terminal, prominent |
S. intercalatum |
ovoid |
176 |
terminal, prominent |
where:
• The diameter of the egg for each species is around 60 microns.
• All of the eggs except for S. haematobium are acid fast positive on the Ziehl-Neelson stain.
Species passed in stool:
(1) Schistosoma intercalatum
(2) Schistosoma japonicum
(3) Schistosoma mansoni
(4) Schistosoma mekongi
Species passed in urine:
(1) Schistosoma haematobium
(2) Schistosoma intercalatum
Specialty: Infectious Diseases, Gastroenterology, Urology