Schistosoma spp.

Schistosoma intercalatum: S. intercalatum adults live in mesenteric vessels. Rectal signs and symptoms are the most common findings. Abdominal pain and bloody diarrhea. Diagnosis is achieved by faecal examination and rectal biopsies. Less frequently eggs are recovered in urines and from biopsies from urinary bladder or liver. Eggs are rhomboid in shape and measure 250 µm and have a long terminal spine. Eggs are acid-alcohol resistant and stain red with Ziehl-Neelsen stain.