Left Pulmonary Abscess

This article is an answer to the Case – Malaise, Back Pain, Dyspnoea and Cough with Purulent Sputu

Peripheral WCC was elevated at 13.0 x 109 / L with a neutrophilia of 11.94 x 109 / L. CRP increased at 246 mg/L. Arterial blood gas on room air; PaO2 9.52. Sputum and blood cultures were negative.

Imaging Findings

Chest X-ray (CXR) was reported as showing a cystic lesion at the left base with an air-fluid level seen within it. Contrast enhanced CT scan of chest demonstrated a fluid and air-filled cavity at the left lung base with an enhancing thick wall on coronal and axial images (see image). Patient was diagnosed with a left lower lobe lung abscess.

Fluid and air-filled cavity at the left lung base with an enhancing thick wall on axial chest CT
Fluid and air-filled cavity at the left lung base with an enhancing thick wall on axial chest CT

Treatment was commenced with intravenous clindamycin and ciprofloxacin. The patient improved dramatically within twenty four hours of commencing antibiotic therapy . CXR after two weeks antibiotic therapy demonstrated a marked improvement in the left lower zone changes with a normalization of the WCC and CRP.

The patient was subsequently discharged to complete a further four weeks oral antibiotic therapy. Follow-up CT performed at 3 months showed almost complete resolution of the abscess on the coronal and axial images.

SIMILAR CASE: Multiple Pulmonary Bacterial Abscesses