RT Journal Article SR Electronic T1 Stage III and Metastatic Lymph Node Ratio Are the only Independent Prognostic Factors in Colorectal Signet-ring Cell Carcinoma Patients JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 7127 OP 7134 DO 10.21873/anticanres.14742 VO 40 IS 12 A1 ALFREDO ANNICCHIARICO A1 ANDREA MORINI A1 ANDREA ROMBOLI A1 MATTEO RICCÒ A1 FRANCESCO LEONARDI A1 PELLEGRINO CRAFA A1 EDOARDO VIRGILIO A1 PAOLO DELL’ABATE A1 RENATO COSTI YR 2020 UL http://ar.iiarjournals.org/content/40/12/7127.abstract AB Background/Aim: Signet-ring cell carcinoma (SRCC) is an uncommon histological variant of colorectal cancer (CRC). Knowledge is scarce due to its rarity. Our aim was to better evaluate the clinicopathologic and prognostic features of this little-known malignancy. Patients and Methods: Thirty-nine consecutive patients with non-metastatic colorectal SRCC undergoing curative resection at University Hospital of Parma between 2000 and 2018 were examined in this retrospective analysis. Results: Mean overall (OS) and disease-free survival (DFS) were 33.6 and 31.5 months, respectively. At univariate analysis, the lymph-related parameters (nodal status, Stage III, metastatic lymph node ratio and lymphovascular invasion) were significantly associated with shorter OS and poorer DFS. At multivariate analysis, Stage III and a metastatic lymph node ratio ≥25% were found to be the only independent prognostic factors significantly correlated with worse OS and DFS. Conclusion: Nodal and lymphatic status should be carefully pondered when planning the most appropriate management of patients with colorectal SRCC.