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Although various patterns of renal diseases have been reported from different renal biopsy registries worldwide, data from Nigeria remain scanty. A 10-year retrospective review of renal biopsies was conducted in our tertiary health care facility. All cases were reclassified based on their light microscopic features after the application of standard histochemical stains. A total of 165 cases were reviewed with a male:female ratio of 1.8:1 and a mean age of 15.4 ± 12.0 years. About 69.7% of the cases were below the age of 16 years, while only 2.4% were older than 50 years. The most common indications for biopsy were nephrotic syndrome (72.1%) and acute renal failure of unknown etiology (11.5%). Overall, glomerulonephritis (80%) was the most common histologic category and occurred only in individuals younger than 50 years old. Minimal change disease (22.9%) and membranoproliferative glomerulonephritis (21.9%) were the most common varieties in children, while membranous glomerulonephritis (30.6%) and focal segmental glomerulosclerosis (27.8%) were the commonest among the adult population. The initial histologic diagnosis was revised in 18 cases while a diagnosis was arrived at in seven cases initially adjudged as inadequate for assessment. This study showed that renal biopsy was predominantly performed in children and adolescents. Although glomerulonephritis was the predominant disease, the predominant histologic patterns varied with the patient age. Despite the scarcity of advanced diagnostic tools in resource-poor environments, routine use of histochemical stains is helpful in the evaluation of renal biopsies.

Biopsy-proven renal disease in Ile-Ife, Nigeria: A histopathologic review