Out of the 73 patients,
38 (52.1%) were men and 35 (47.9%) women.
The mean age was 41year with age range from 8 to 84 years.
Soft tissue tumors (STT) were 51 (69.9%) and bone tumors (BT) 22 (30.1%) cases.
Benign tumor was found in 46 (63%),
primary malignant tumor in 17 (23.3%),
metastatic tumor in 7(9.6%),
and non-neoplastic processes in 3(4.1%) cases.
There was no significant difference between STT and BT regarding the nature of the lesion.
Nondiagnostic of Percutaneous Biopsy were 12 cases (16.4%):
- 10-benign,
- one-malignant,
- one-nonneoplastic lesion
Nondiagnostic speciment in Open Biopsy were 3 cases (4%).
Both modalities,
PB and OB,
were negative for two cases of intramuscular lipoma and one case with stress fracture.
Discrepancy between the diagnoses on a PB and OBA was find in 5 cases: 1.
high grade malignant tumor on PB was downgraded on OB as low grade - one case;
2.
low grade on PB but high grade on OB - two cases;
3.
low grade on PB but was found to be benign tumor on OB - one case;
4.
low grade on PB but it was metastasis after OB - one case.
Statistical analysis showed significant positive correlation (p<0,01) between PB and OB for tumor classification,
grade and type assessment.
Regarding tumor type congruence between PB and final histology was 68.5% (50cases),
and between OB and final histology was 94.5%(69 cases).
Imaging guided PB for primary malignant musculoskeletal tumor has 100% sensitivity 97.3% specificity and 98% accuracy.