KLK3 and posterior cortical atrophy: We therefore set out to look at the clinical and pathological characteristics of PCa (presenting prostate specific antigen (PSA) level, histopathological type, tumour grade and stage of disease) among black men of Nigeria and South Africa; with a view to compare the characteristics of the disease and its association with socio-demographic characteristics and medical co-morbidities among black men from both countries.