Table 4 Clinical and histological characteristics of the patients whose prostate biopsy needles were used for residual sample retrieval and analysis

From: Highly sensitive molecular diagnosis of prostate cancer using surplus material washed off from biopsy needles

Tumoural wash-off samples   Normal wash-off samples  
Number of patientsa 27 Number of patients 26
Mean age (years) 66 (52–84) Mean age (years) 67 (57–78)
Mean PSA (ng ml−1)b 648 (1.47–10,230) Mean PSA (ng ml−1)c 13.24 (2.11–79)
Median PSA (ng ml−1)b 8 Median PSA (ng ml−1)c 8.14
Mean ratio free PSA/total PSA (%)d 18.1 (6.9–34) Mean ratio free PSA/total PSA (%)e 16.6 (9–24.7)
Median ratio free PSA/total PSA (%)d 15.9 Median ratio free PSA/total PSA (%)e 17.8
Gleason score (number of patients)
 6 10   
 7 12   
 8 0   
 9 3   
 10 2   
Mean % of carcinoma in the tissue coref 53.8 (<5–90)   
  1. Abbreviation: PSA=prostate-specific antigen.
  2. aFor one patient, both lobes were analysed.
  3. bData not available for eight patients.
  4. dData not available for 15 patients.
  5. cData not available for six patients.
  6. eData not available for 10 patients.
  7. fMean content of tumoural glands relative to the whole tissue.