This study describes the clinical course of a 31 year old woman who developed multiple anaerobic brain abscesses six days after tonsillectomy, followed by hemoparesis and dysarthria. In spite of craniotomy, repeated punctures and drainage of pus and high dose local and systemic antibiotics, there was an obvious deterioration in the patient’s condition. Hyperbaric oxygen therapy was tried as a last resort. The patient improved quickly, and six months after the tonsillectomy seems to be neurologically symptomfree.

Pilgramm, Lampl, Frey, Wörner, , , , , (1985). [Hyperbaric oxygen therapy of anaerobic brain abscesses following tonsillectomy]. HNO, 1985 Feb;33(2):84-6. https://www.ncbi.nlm.nih.gov/pubmed/3980250