The collagen-containing connective tissue component of breast and prostate cancer as a key determinant of the risk of metastatic progression

Authors

DOI:

https://doi.org/10.26641/1997-9665.2025.2.37-46

Keywords:

invasive ductal breast cancer, prostate cancer, parenchymal and stromal components of tumors, degree of malignancy, collagen-containing fibrillar structures.

Abstract

Introduction. Numerous studies in recent decades have confirmed that, alongside the parenchymal component of tumors, the fibrous collagen-containing stroma plays a critical role in determining the course and progression of cancer. Objective. To identify morphological features that highlight the significance of the stromal, particularly the collagen-containing component, in shaping the malignant phenotype and metastatic potential of the most common hormone-dependent tumors — invasive breast cancer (BCa) and prostate cancer (PCa). This was achieved by correlating these features with the clinicopathological characteristics of patients. Methods. Histological material of primary tumors was examined from individuals of the Kyiv population — of 120 womens with stage I–II invasive ductal BCa with moderate differentiation (G2), and 69 mens with PCa with Gleason scores of 6–9, including both cases without metastatic progression and cases with lymph node and bone metastases. To verify collagen-containing structures and quantify the distribution of variously shaped collagen fibrils around epithelial structures in the parenchyma, histological sections were stained using Van Gieson’s method. Results. A comparative analysis of the features of collagen-containing fibrous structures in the primary tumors of BCa and PCa patients — considering the proportions of parenchymal and stromal components, the degree of desmoplasia in adjacent and surrounding connective tissue, and the ratio of differently shaped collagen fibrils around parenchymal structures — together with the clinicopathological data, supports the conclusion that the observed differences and patterns, specifically: a shift towards more aligned collagen fibrils around epithelial structures, an increase in the overall mass of collagen in the adjacent and surrounding tumor stroma, thickening and widening of fibrils, and their denser and more parallel arrangement against varying degrees of desmoplasia, should be emphasized by pathologists in pathological reports as indicators of metastatic progression risk. This would help clinicians develop more personalized prognoses and select optimal therapeutic strategies.

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Published

2025-07-30

How to Cite

Naleskina , L., Lukianova , N., Zadvornyi , T., Kunska , L., & Chekhun , V. (2025). The collagen-containing connective tissue component of breast and prostate cancer as a key determinant of the risk of metastatic progression. Морфологія / Morphologia / Morfologìâ, 19(2), 37–46. https://doi.org/10.26641/1997-9665.2025.2.37-46

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