We report a case of a retroperitoneal abscess due to Mycoplasma hominis in
a young polytraumatized man who developed septicemia under treatment with r
ifampin and flucloxacillin. M. hominis was recovered from blood cultures as
well as from the abscess near the left iliac spine. After 10 days of thera
py with clindamycin the patient improved, and intraoperatively ta ken swabs
were culturenegative but still positive by PCR.