大腿骨内顆関節面に発生した類上皮嚢胞 (epidermoid cyst) の1例

抄録

A 22 year-old man was admitted with two months' history of grdually increasing pain and swelling of his left knee joint. He had been injured his left knee in a motorclycle accident sixteen months ago. The wound penetrated into the joint cavity through the medial site of the patellar tendon and was completely healed with no clinical sign.
A present X-ray film showed a small hemi-spherical osteolytic lesion on the posteroinferior surface of the medial condyle of the femur. The lesion was surgically excised and diagnosed as epidermoid cyst.