Nasal and paranasal pathology in experimental bilharziasis

The heads of ten white mice experimentally infested by bilharziasis were processed to examine the nasal and paranasal cavities. Five normal littermates served as controls. The incidence of pathology in these cavities was exceptionally high in the diseased group (100 per cent). Lymphoid hyperplasia was noticed in many cases while one case showed bilharzial eggs in relation to the nasal walls. The significance of these findings and their relationship to human bilharziasis is discussed.