Study design and setting
Potentially eligible patients were identified using the International
Classification of Disease – 10 (ICD-10) diagnosis of all types of
intracranial abscesses (i.e. SDE, IPA, EDA) under the umbrella code of
“intracranial abscess and granuloma” (G06.0) between 1st January 2000
and 31st December 2020. Medical records of the
individual subjects were manually screened and only patients with the
sinogenic intracranial abscesses were included in the study. A
preliminary report on the outcomes of the first 14 patients have been
previously reported by our group[16].