Table 4: Grading of the Clavien-Dindo classification.
| Clavien-Dindo classification | N = 31 |
| Grade I - Any desviation from the normal postoperative course. | 0 |
| Grade II - Requiring farmacological treatment. | 4 |
| Grade III - Requiring surgical, endoscopic or radiologic intervention. | 21 |
| Grade IV - Requiring intermediate care/UCI management. | 2 |
| Grade V - Death. | 4 |