Performing invasive diagnosis in patients with primary malignant bone tumors of the pelvis is a challenging task due to the anatomical complexity of this area, deep-seated tumors in the acetabulum and ischial bone, and adjacent organs such as the bladder, rectum, parietal peritoneum, and major pelvic vascular bundle. The article presents comparative results of invasive diagnosis in patients with pelvic bone sarcomas using open and core needle biopsies.
OBJECTIVE
To evaluate the effectiveness and compare the results of open biopsy and core needle biopsy in patients with malignant bone tumors of the pelvis.
MATERIAL AND METHODS
In patients (121 individuals, including 51 (42%) males and 70 (68%) females) with primary malignant bone tumors of the pelvis, 90 (74%) core needle biopsies and 31 (26%) open biopsies were performed for morphological diagnosis. The average age of patients was 45 years (18—73 years). Core needle biopsy was performed under computed tomography guidance in 52 (58%) patients, using ultrasound in 23 (26%) patients. Additional navigation during core needle biopsy was not performed in 15 (16%) patients.
RESULTS
The overall diagnostic accuracy using all types of biopsies was 91%. The sensitivity of core needle biopsy was 87%, and open biopsy was 100%. Complications after core needle biopsy were diagnosed in 1% of patients, and after open biopsy in 9% of patients. The influence of navigation type, as well as the maximum tumor size and its localization in the pelvic bones on the sensitivity of core needle biopsy was identified.
CONCLUSION
The obtained results were consistent with data from other clinics. The sensitivity of the technique was 87%, similar to the results of other foreign clinics — 89 and 91%. The number of complications in our study did not exceed 1%. In similar studies, their frequency was 3—5%.