Abstract
A well demarcated, small, solitary, round and homogenous shadow was roentgenologically observed in the left upper field of the lung of a 25 years old mare who had been scarecely complaining.
This case was diagnosed as suspicion of tuberculoma before operation. The histological examination cf the removed tumor showed a chondroma.
A statistical study of several cases operated previously in Japan was referred and roentogenological and histological characteristics of this disease was discussed.
