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Correlations between intratumoral interstitial fibrillary network and tumoral architecture in prostatic adenocarcinoma.

The authors made a preliminary assessment of possible correlations between the amount of intratumoral stromal fibrillary components (ISFC) and the architectural tumoral patterns described by Gleason. The studied material consisted of samples obtained by transurethral resection from 34 patients diagnosed with prostatic adenocarcinoma. Ten fields, five for dominant and five for secondary identified patterns of each case, with no necrosis were selected randomly from Gömöri stained sections using ×20 objective. ISFC-ratio increased with Gleason pattern both for the entire group but also for "Necrotizing" phenotype patterns and "Solid" phenotype patterns, excepting the subtype "4A" where the stromal compartment was reduced by the expansion of tumoral ducts enlarged by growing tumoral intraductal cribriform masses. These preliminary data showed that stromal microenvironment try to adapt to the loss of tumoral differentiation by increasing the amount of fibrillary components of intratumoral stromal compartment.