STRUCTURAL ORGANIZATION OF COLLAGEN-CONTAINING CONNECTIVE TISSUE AS A PREDICTOR OF METASTATIC PROGRESSION OF PROSTATE CANCER
DOI:
https://doi.org/10.15407/oncology.2023.01.055Keywords:
prostate cancer, collagen-containing connective tissue architecture, tumor stroma, bone metastases.Abstract
Summary. Aim: to determine at the optical level the role of the fibrillar organization of the collagen-containing connective tissue component of the primary tumor focus in PCa progression. Objects and methods: the morphological study is based on the analysis of the histological material of the primary tumor foci of 55 PCa patients without tumor progression in the postoperative period and bone metastases. The tumors were graded Gleason 6-9 at surgery. The features of the architecture of collagen-containing connective tissue in tumors were determined in histological slides stained by Van-Gieson. Results: the remodeling of the collagen-containing stromal component located both around the glandular structures (increase in the percentage of straight and aligned collagen fibers compared to the curved ones) and in the stroma itself has been found. Such remodeling is manifested by an increase in the total mass of fibrous structures, an increase in the width of collagen fibrils, their compaction in relation to the density of their location, peculiarities of desmoplasia, alignment and elongation. The specified features are consistent with the Gleason score and the postoperative disease course, namely, the occurrence of metastases. Conclusions: the desmoplastically changed collagen-containing connective tissue component of the PCa creates favorable conditions for the unimpeded migration and realization of the invasive potential of cancer cells, in particular those expressing bone tissue remodeling proteins.
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