Adenocarcinoma of the urachus: CT features.

The CT findings of adenocarcinoma of the urachus in three patients were reviewed and correlated with pathologic features. The tumor was composed of two parts: supravesical and intravesical. The supravesical portion showed a cystic appearance with a capsule in the space of Retzius. The intravesical portions invading the dome of the bladder were polypoid and unencapsulated. These findings were consistent with pathologic findings in all three patients.