An 86-year-old woman, with history of metastatic pancreatic cancer, presented with asthenia, abdominal pain and weight loss. Few days after hospitalization, purple urine were observed in the indwelling urinary catheter (Fig. 1). This catheter had been present for several weeks in this patient bedridden. Physical examination revealed fever (38.4 °C) and severe constipation favored by morphine treatment. Dipstick test showed alkaline urine (pH of 10) and leukocyturia but without hematuria. The urine culture showed 106 colony-forming units per milliliter for Klebsiella pneumoniae.