Papillary Adenoma of Kidney - An Incidental Autopsy Finding: Report of Two Cases

Background: renal papillary adenoma is usually an incidental finding at autopsy with an incidence of 7% to 23%. the frequency of small papillary tumours of kidney increases with age to approximately 40% of the population over the age of 65. these tumours occur more frequently in scarred kidneys, acquired renal cystic disease and in children with von hippel-lindau syndrome. case history: in this report we describe renal papillary adenoma incidentally detected during autopsies of two elderly males. gross examination of kidney showed two tiny subcapsular yellowish nodules in one case and single nodule with similar morphology in the other. microscopic examination in both the cases showed a well circumscribed tumour composed of densely packed tubules and papillae lined by small cuboidal to columnar cells with rounded uniform nuclei. however there was no nuclear atypia, mitosis or necrosis