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results

From 1987 to 1999, 180 percutaneous musculoskeletal biopsies were performed on an out-patient basis. There were 63% female and 37% male patients ranging in age from 17 to 87 years ( mean 58.4 years ). Biopsy was performed in 55% of the cases for lytic lesions, in 24% of the cases for condensing or mixed lesions, in 18% of the cases for vertebral compression fractures. Biopsy was made in 68% of the cases for vertebral , in 17% of the cases for pelvic girdle and in 14% of the cases for peripheral long bone lesions. Vertebral lesions were at cervical in 3% of the cases, in 15% of the cases at thoracic level, in 45% of the cases at lumbar level and in 7% of the cases at sacral level. Only two complication were observed among our patients These consisted of paravertebral hematomas which resolved spontaneously. Specificity for diagnosis was 100 %, sensitivity was 93.9 %, positive predictive value was 100 %, negative predictive value was 87.5%.

 

Lesion type Lytic Condensing or mixed Vertebral compression fractures Other
Number % 55% 24% 18% 4%


Location Vertebral Pelvic guirdle Peripheral long bones
Number % 68% 17% 14%

 

Level Cervical Thoracic Lumbar Sacrum
Number % 3% 45% 45% 7%

 

Results
Sensitivity 93.9 %
Specificity 100 %
P.P.V. 100 %
N.P.V. 87.5 %