Urological Tumor: A Narrative Review of Tertiary Lymphatic Structures

Area of Science:

• Oncology
• Immunology
• Urology

Background:

• Tertiary lymphoid structures (TLSs) resemble secondary lymphoid organs and are implicated in chronic inflammation, autoimmune responses, and cancer immunotherapy.
• The tumor microenvironment in urological cancers is complex, impacting immunotherapy response and making the prognostic value of TLSs controversial.
• TLSs are ectopic lymphoid-like tissues with significant roles in various biological processes.

Purpose of the Study:

• To systematically explore the role and mechanisms of TLSs in urological tumors.
• To investigate the characteristics of TLSs within the context of urological cancers.
• To clarify the clinical significance and prognostic value of TLSs in different urological tumors.

Main Methods:

• Literature search of PubMed, Web of Science, and other databases up to 2023.
• Keywords included Tertiary Lymphoid Structures (TLSs), kidney cancer, uroepithelial cancer, bladder cancer, and prostate cancer.
• Systematic review and analysis of relevant studies on TLSs in urological tumors.

Main Results:

• The prognostic role of TLSs differs significantly across various urological tumors.
• TLS enrichment within the tumor and tumor location are key factors influencing their prognostic significance.
• Autoimmune toxicity may impede TLS formation, potentially acting as a barrier.

Conclusions:

• TLSs exhibit varied prognostic value in urological cancers, influenced by tumor-specific factors.
• Further research into TLS mechanisms, particularly in autoimmune diseases, could inform the development of novel antitumor therapies.
• Understanding TLSs is crucial for predicting immunotherapy response and patient outcomes in urological malignancies.