An evaluation of the microvessel density (MVD) as a prognostic biomarker in adenocarcinoma of prostate
Session type: Poster / e-Poster / Silent Theatre session
1University of Portsmouth,2Department of Cellular Pathology, Queen Alexandra Hospital, Portsmouth,3Department of Urology, Queen Alexandra Hospital, Portsmouth,4Department of Oncology, Queen Alexandra Hospital, Portsmouth
BackgroundTo assess the angiogenetic activity in tumour areas by measuring the microvessel density (MVD) with immunohistochemistry endothelial marker CD31 and to investigate if a correlation exists between MVD and the Gleason grade groups in biopsy and prostatectomy samples of prostate cancer.
The study included 20 prostate biopsies followed by the prostatectomy samples. Based on the previous pathologic reports, samples were categorised into four groups: Grade group 1 (Gleason score =6), Grade group 2 (Gleason score 3+4=7), Grade group 3 (Gleason score 4+3=7), Grade group 4/5 (Gleason score ≥8). Tissue sections from biopsy and prostatectomy samples were stained using immunohistochemistry technique with CD31 antibody. MVD was counted under the light microscope at x200 magnification in three hot spot areas and the mean counts were compared.
Biopsy samples MVD: Grade group 1 - 18±6.3, Grade group 2 - 25±5.8, Grade group 3 - 37±10.7, Grade group 4/5 - 27±13.5.
Prostatectomy samples MVD: Grade group 1 - 59±25.6, Grade group 2 - 59±29.4, Grade group 3 - 87±8.8, Grade group 4/5 - 59±9.4.