Abstract
Core needle biopsy is widely used to diagnose spinal lesions. Final histopathological report of the specimen usually can be given after several days. These several days delay may prevent early treatment in some patients. Our aim was to investigate if treatment of spinal lesions could be started according to the immediate cytologic evaluation of the core needle biopsy. The cytological materials of the 213 core needle spinal biopsy were prepared immediately after biopsy procedure. Of these biopsies, only 101 core needle biopsy had a final diagnosis which formed the backbone of the current study. Cytological materials of these cases were compared with both histopathologic results of the core biopsy and with final diagnosis obtained by open surgery or clinical follow up. According to final diagnoses 40 patients had infections, 59 patients had neoplasms and 2 patients had no pathology. When the diagnosis that determines the treatment is considered, the overall success rates (positive predictive value:PPV) of cytology and histology were 0.65 and 0.76 respectively. Moreover when the specific diagnosis were analyzed separetely in the subgroups of tuberculous infection, lymphoma and plasmacytoma; PPV of both cytological and histological assessments was 1.00. In spinal metastasis, PPV was 0.97 for cytology and 1.00 for histology. Rapid cytologic interpretation of core needle biopsy material is a useful and reliable tool to determine the spinal lesions which require urgent treatment. When the cytological specimen reveals the diagnosis of spinal metastasis, lymphoma, plasmacytoma or tuberculosis, the treatment may be started without waiting the result of the histological examination.
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