Bilharzial appendicitis in Schistosoma haematobium infestations. A preliminary report

Appendicectomy was performed on thirty-five individuals inhabiting a hyperendemic area of bilharziasis in Northern Nigeria. Ova of S. haematobium were present in the urines of all patients. 2. Twenty (57 per cent.) of the thirty-five appendices examined showed terminal spined ova. 3. Four (20 per cent.) of the twenty affected appendices had gross macroscopic lesions which were held accountable for the severe appendicular symptoms described. Clinical and pathological details of these four cases are given. 4. Pathological technique and observations are recorded in detail. The histopathology is described and discussed. 5. A constructive account of the pathological process is given, and the stages illustrated by a series of photomicrographs.