Study of bone tumours: (a comparison of drill with open biopsy).

This study was undertaken to find out the frequency of bone tumours and to evaluate the effectiveness of drill biopsy for tumourous bony lesions. A total of 182 cases of bone tumours and tumour-like lesions were studied histopathologically. Of these, 100 (54.95%) cases were found to be malignant, 45 (24.73%) benign and 28 (15.38%) tumour-like lesions. A total of 38 drill biopsies were performed where 29 cases had corresponding open biopsies. Of these, 22 cases (75.86%) had concordances in diagnosis. The overall success of drill biopsy was 73.68%.