[Chondroma in a sheep]

A chondroma localized in the last two ribs at one-third of the distance from the spinous process to the sternum, and approximately 35 cm in diameter, is reported. The ewe was about four to five years of age and in fairly good condition. Apparently it was a rare case; a condition of this type was not previously reported in the Netherlands. Only two cases of chondrosarcoma (also in the costal arch) out of 129,981 autopsies are reported (1).