Haemophilus parainfluenzae as a rare cause of pyogenic liver abscess: A case report and literature review

We report a case of Haemophilus parainfluenzae pyogenic liver abscess in a 53-year-old Filipino female who was admitted with a 3-day history of abdominal pain and fever. Clinical examination showed tenderness in right hypochondrium, and the liver edge was just palpable. Abdominal ultrasound revealed heterogeneous lesion in the left liver lobe, consistent with liver abscess, which was aspirated and the patient received ceftriaxone and metronidazole empirically. Two days after admission, pus culture grew profuse growth of H. parainfluenzae which was sensitive to ampicillin and ceftriaxone, accordingly metronidazole was stopped and ceftriaxone was continued 2 g daily intravenously. The drain was removed on 14th hospital day. Patient made a good recovery and was discharged home on oral cefuroxime for 2 weeks more.