TOPICS: Schistosoma, parasite, protozoa, trematodes, mansoni, japanicom, lateral spines, haematobium, terminal spines, eggs with spines, hatch in freshwater, immature larvae, freshwater snail, intermediate host, mature larvae, cercariae, infects skin, open wounds, hematuria, squamous cell carcinoma of the bladder, splenomegaly, diarrhea, intestinal ulcers, iron deficiency anemia, portal hypertension, hepatomegaly, liver cirrhosis, pulmonary hypertension