结肠黏液腺癌中肿瘤沉积物的预后价值及预测列线图构建与验证

《Scientific Reports》：Prognostic significance and clinicopathologic prediction of tumor deposits in non-metastatic colon mucinous adenocarcinoma

　　Thank you for sharing this text. It appears to be the abstract of a medical research study. Here is a summary of its key points:This study investigates the prognostic significance of **tumor deposits (TDs)** in a specific type of colon cancer known as **colon mucinous adenocarcinoma (CMAC)**.**Main Objectives:*** To determine if TDs are an independent risk factor for worse survival in patients with non-metastatic CMAC.* To develop and validate a prediction model (a nomogram) that can identify patients likely to have TDs.**Methods:*** **Data Sources:** The researchers used data from the **SEER** (Surveillance, Epidemiology, and End Results) database, a major US cancer registry, for their main analysis. They also gathered data from a separate hospital in China for external validation.* **Statistical Analysis:** They employed advanced statistical techniques, including Kaplan–Meier analysis and Cox regression, to analyze survival data.**Key Findings:*** **TDs are a Negative Prognostic Factor:** The study found that the presence of tumor deposits was significantly associated with poorer cancer-specific survival, even after accounting for the burden of positive lymph nodes.* **A Predictive Nomogram:** They successfully created a nomogram that predicts the presence of TDs using six standard clinicopathologic features: tumor size, site, grade, invasion depth, positive lymph node count, and perineural invasion.* **Good Performance:** The nomogram showed strong predictive ability and accuracy across both their main training dataset and the separate external validation cohort.**Conclusion:**The study concludes that tumor deposits are an important indicator of poor prognosis in CMAC. The developed nomogram is a useful tool that could help identify patients who may benefit from more thorough pathological examination to detect TDs. The authors note that their findings on survival outcomes require further validation in other, larger studies.