Hypertrophy of the caudate lobe of the liver demonstrated with single photon emission CT.

A case of hypertrophy of the caudate lobe of the liver is reported in which transmission CT scanning strongly suggested the presence of a liver tumor. However, single photon emission CT using Tc-99m phytate showed that there was only caudate lobe enlargement with no evidence of a space-occupying lesion. The usefulness of single photon emission CT in such situations is discussed.