Classification of bone tumor cases admitted to the National Orthopedic Hospital

ABSTRACT

From Jan. 1, 1946 to Dec. 31 1962 we were able to collect 605 bone tumors. The lesions were group-into 3 major divisions, namely (1) Primary Bone Tumors, (2) Secondary Bone Tumors and (3) Osseous Lesions simulating Bone Tumors. Under Primary Bone Tumors are included the benign and malignant conditions that originate from the bone tissue and from the different tissues found inside the bone. Secondary Bone Tumors are neoplasms that arise elsewhere and involve the bone. The osseous lesions simulating bone tumors consist of a heterogenous group. There were 410 primary bone tumors, 145 secondary bone tumors and 50 bone lesions simulating bone tumors. The most common primary bone tumor is osteogenic sarcoma followed by giant cell tumor and then by osteochondromaAmong the secondary bone tumors the most common metastatic tumor originates from the thyroid gland. This is followed, according to their order of frequency, by neoplasms arising from the lungs, breast, and kidneysThe characteristic features of the different primary bone tumors are briefly discussedTaking for granted that the yearly average admission of patients is 2,500 the total bone tumors and allied lesions listed above presents 1.51% of the total admissions during the last 16 years. (Summary)