A case of hypoplasia of the left hepatic lobe.

We report a case of hypoplasia of the left hepatic lobe in a 90-year-old woman. The left lobe was composed of three parts, central, anterior and lateral. The central part was equivalent to the hepatic hilum and consisted of 1/3 of a circle with a radius of about 30 mm and a maximum thickness of 8 mm. The anterior part had an elliptical shape of 65 mm x 33 mm, 21 mm thick. The lateral part had an elongated elliptical shape of 67 x 21 mm, also 16 mm thick. Sublobation was noted in the caudate and quadrate lobes. The caudate lobe was divided into two parts, and the quadrate lobe into three parts. The right lobe was bell-shaped with the top turned toward the diaphragm. The transverse diameter at the base was 108 mm, the antero-posterior diameter was 134 mm, and the distance from the bottom to the top was 95 mm. A deep groove paralleled the anterior rim at the base surface, where the gallbladder was in contact with the liver. No anomalous distribution of blood vessels or biliary canals was found. No atrophic feature was histologically recognized in any lobe.