The Origin and Development of Renal Adenomas and Cortex

( b ) Six simple cortical cysts, one in serial sections. ( c ) Five small papillary cysts, four of which were studied in serial sections. ( d ) Thirty-seven cystadenomas, of which 13 were single and 6 multiple simple papillary cystadenomas. Fourteen were solid cystadenomas. One papillary and two solid cystadenomas were studied in serial section. ( P ) Three alveolar adenomas, a single paraffin section of each. ( I ) Four tubular adenomas, one of which was studied in serial section. (g) Four small but typical hypernephromas which had not metastasized.