Table 1 Difficulty scoring system by Halls et al. [26] at a glance
Risk factor and assigned points | ||||
|---|---|---|---|---|
Risk factor | Risk factor category | Points assigned | ||
Neoadjuvant chemotherapy | No neoadjuvant chemotherapy | 0 | ||
Received | 1 | |||
Previous open liver resection | No | 0 | ||
Yes | 5 | |||
Lesion type | Benign | 0 | ||
Malignant | 2 | |||
Lesion size (cm) | < 3 | 0 | ||
3–5 | 2 | |||
> 5 | 3 | |||
Classification of resection | Minor | 0 | ||
Technically major | 2 | |||
Anatomically major | 4 | |||
Points translated into difficulty scores | ||||
Difficulty scores | 0–2 | 3–5 | 6–9 | 10–15 |
Difficulty levels | Low | Moderate | High | Extremely high |
Probability of IOC | < 10% | 10–20% | 20–50% | > 50% |