Fig. 1

a Chart of patient’s clinical course after admission. The lower graph shows the patient’s body temperature, white blood cell count, and C-reactive protein levels during hospitalisation. Renal cyst drainage was performed on Day 13, and the fluid drained initially was 200 mL. A PCR test performed on Day 30 revealed that the causative bacteria was Desulfovibrio fairfieldensis. The middle graph shows the volume of fluid drained. The drained fluid volume could not be measured for two days after the initial drainage. The upper bar shows the antibacterial drug administered, the dose, and the timing of switching; BT, body temperature; CIP, ciprofloxacin; CRP, C-reactive protein; MEM, meropenem; MNZ, oral metronidazole; PCR, polymerase chain reaction; WBC, white blood cell count. b Diffusion-weighted imaging of plain abdominal magnetic resonance imaging (MRI) on Day 9 of admission. White arrow: a renal haemorrhagic cyst