Ureteral involvement by metastatic malignant disease

Area of Science:

• Oncology
• Urology

Background:

• Ureteral metastases from primary cancers are exceptionally rare.
• Treatment for these metastases is challenging, often resulting in poor patient outcomes.

Purpose of the Study:

• To identify characteristics influencing survival rates in patients with ureteral metastases.
• To synthesize evidence from existing literature on the management and prognosis of ureteral cancer spread.

Main Methods:

• A systematic literature review was conducted using PubMed and Web of Science databases.
• Data from 79 papers, encompassing 265 patients with ureteral metastases, were analyzed.
• Key factors including interval time from primary diagnosis and treatment modalities were examined.

Main Results:

• Prostate, bladder, breast, gut cancers, and lymphoma were the most common primary sources.
• The median interval to ureteral metastasis was 28.5 months, with a median survival of 18 months post-diagnosis.
• While age, sex, and tumor location were not significant, interval time and treatment modality impacted survival.

Conclusions:

• Surgical intervention for ureteral metastases was associated with significantly better patient outcomes.
• Treatment strategy is a critical determinant of survival in patients with secondary ureteral malignancies.
• Further research into optimal management strategies for this rare condition is warranted.