Effect of Surgery Combined with Gemcitabine and Oxaliplatin Chemotherapy on Primary Signet Ring Cell Carcinoma of Bladder: A Case Report

Background: Primary signet ring cell carcinoma of the bladder is an extremely rare and highly invasive variant of primary bladder cancer. When tumors are found, they usually show high level and high-stage lesions and diffuse invasion of the bladder wall, and most tumors do not grow in the cavity. Most patients have no specific symptoms at the beginning, which leads to delayed diagnosis and treatment and poor prognosis.