Bilharzial (“sand grain”) cystitis Chronic deep ulcerations of the bladder, seen through a cystoscope in a patient with S. hematobium infection. Note the bilharzial tubercles at the top of the picture.
ulcers
Schistosomic granuloma (HE) x 150
dSchistosoma haematobium egg
PAS stain. Note the large macrophages with granular PAS-positive cytoplasm and several dense, round Michaelis-Gutmann bodies surrounded by artifactual cleared holes in the upper middle field.
Malacoplakia
Cystitis with malacoplakia of bladder showing inflammatory exudate and broad, flat plaques.