右大胸筋起始部に発生した Pseudomalignant osseous tumor of soft tissue の一例

抄録

This paper reports a case of pseudomalignant osseous tumor which was appeared at the origin of right major pectorius muscle. The patient was diagnosed as P. M. O. by zone phenomena and histological examination. We could not deny osteogenic sarcoma of solft tissue by histological examination at first. Then we used Co-irradiation and A. D. M. We think that following considerations are important to avoid overtreatment; 1) Knowledge of P. M. O. 2) Suspection of P. M. O. by clinical course, radiograms and diagnosis with zone phenomena.