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Summary of the presumed aetiology of the patients’ pyogenic liver abscesses
| Aetiology | n (%) |
| Cryptogenic | 20 (34) |
| Biliary | 14 (22) |
| Portal (e.g. appendicitis, diverticulitis) | 12 (20) |
| Haematogenous (other bacteremic source) | 7 (11) |
| Direct (e.g. pericholecystic abscess, RFA) | 6 (9.4) |
RFA: Radiofrequency ablation.
