• Xin Hong, Tian Wang, Qing Liu, Jianlong Bi, and Hui Li.
• Department of Urology, Peking University International Hospital, Beijing, China. Electronic address: hongxin@pkuih.edu.cn.
• Clinics (Sao Paulo). 2024 Jan 1; 79: 100500100500.

AimPrimary Signet Ring Cell Carcinoma (SRCC) of the bladder accounts for only 1%‒4% of all bladder malignancies. To date, few studies have been conducted to investigate the characteristics of SRCC. This study aimed to investigate the clinical features and treatments of SRCC and explore the independent risk factors of survival in SRCC patients.Patients And MethodsA retrospective study was conducted on 32 eligible patients. The survival rate was calculated with the Kaplan-Meier method, and the COX proportional hazards model was used to investigate the independent risk factors of prognosis.ResultsIn the present study, the 1-year and 2-year survival rates of SRCC patients were 53.1% and 9.4%, respectively. The TNM stage, tumor differentiation, and metastasis after treatment were risk factors for the prognosis of SRCC patients (p < 0.05), while surgical treatment, chemotherapy, and positive GATA3 expression were protective for prognosis (p < 0.05). Multivariate analysis showed that GATA3 was an independent protective factor for prognosis (p < 0.05), and T-stage was an independent risk factor (p < 0.05).ConclusionsPrimary SRCC of the bladder is highly malignant and has a poor prognosis. Its clinical and imaging findings are usually non-specific. Early radical cystectomy and postoperative adjuvant systemic chemotherapy are helpful to improve the survival rate. T-stage is an independent risk factor for survival, and positive GATA3 expression is protective for primary SRCC of the bladder.Copyright © 2024 HCFMUSP. Published by Elsevier España, S.L.U. All rights reserved.

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