[Posterior cranial fossa abscess secondary to cholesteatoma]. / Cholestéatome compliqué d'abcès de la fosse postérieure.

ABSTRACT

OBJECTIVE: The intra cranial complications of chronic ear disease continue to pose a challenge in Senegal, despite advances in anti microbial therapy. Posterior cranial fossa abscesses are rare and continue to be associated with significant morbidity and mortality rates. We describe the presentation and management of a large cerebellar abscess secondary to cholesteatoma. METHODS AND RESULTS: A 11-year-old female presented with an inflammed fluctuant swelling of the right temporal region with ipsilateral otorrhoea. Examination demonstrated an auto atticotomy, large marginal perforation of the tympanic membrane associated with polyp. A diagnosis of otomastoiditis secondary to cholesteatoma was made. The abscess of the right temporal region was incised and drained and the patient was commenced on broad spectrum antibiotics. However the patients clinical status did not improve and there was a deterioration in her neurological status. CT brain and temporal bones demonstrated a large abscess in the cerebellum. 30 CC of pus were drained through a posterior fossa burr hole by the neurosurgeons. A radical mastoidectomy for extensive cholesteatoma of the right ear was subsequently carried out when the patients condition improved. CONCLUSION: Cerebellar abscess is a life threathning condition. In the presence of complicated chronic ear disease, clinical suspicion must be high as early symptoms and signs may be misleading. A low threshold for the performance of brain imagining will aid early diagnosis and allow prompt definitive treatment.