Abstract
This study was carried out to know the incidence of bone tumors and tumor like lesions and to find out the common type of lesions or tumors in this part of the country. Besides this, the aim of present study was also to assess the role of FNAC in diagnosis of bone lesions. The study includes both prospective and retrospective cases. In the prospective study, all the new cases admitted to orthopedic surgery ward were studied initially by fine needle aspiration cytology and then histopathologically, while in the retrospective study, all the materials such as blocks and slides available in the pathology deptt were reviewed. The total number of bone tumors and tumor like lesions of bone studied both prospectively and retrospectively at the deptt of Pathology, LLRM Medical College, Meerut during the last 15 years were 424. Out of these, 367 cases (86.5%) studied retrospectively and 57 cases (13.5%) prospectively. It was found that maximum number of cases were of bone forming tumors (22.6%). But overall incidence of osteoclastoma (Giant Cell Tumor) was maximum (18.0%), followed by osteosarcoma (15.8%) and Ewing's sarcoma (10.6%). Of the benign tumors, incidence of osteochondroma (9.0%) was maximum while in tumor like lesions, fibrous dysplasia (7.8%) was most common. Aspiration cytology was found to be an outstanding procedure for early diagnosis with no complications and high accuracy (96.5%) in the present study could be achieved with the close cooperation of the clinician, radiologist and pathologist.

Key words: Bone tumors, osteoclastoma, aspiration cytology.