CEACAM5 and urinary tract infection: The patient had not received any treatment prior to admission, and physical examination revealed only mild epigastric tenderness.Tests for tumor markers such as alpha-fetoprotein (AFP), CA125 and carcinoembryonic antigen (CEA) were all negative, and the results of the Echinococcus IgG antibody test (ELISA) were positive.Routine urinalysis showed a mild urinary tract infection (urinalysis combination: bacteria: 23065.50/uL, turbidity: +1), but urine culture results were negative.