| Type of intervention | Complication (grade according to Clavien Dindon) | Total | ||
| Grade I | Grade II | Grade III | ||
| PCNL | N = 2 - Hematuria (1) - Vomiting (1) | N = 9 - Urinary infection (7) - PNA (2) | N = 0 | N = 11 (11.22%) |
| URS | 2 - Hematuria (1) - Peritonitis (1) | 8 - Urinary infection (3) - APN* (5) | 0 | 10 (8%) |
| Open Surgery | 1 | 1 |
2 | 23.52% |
| Ureterolithotomy | 0 | 1 - APN* | 0 | 1 (33.33%) |
| Pyelolithotomy | 0 | 0 | 1 - Ureterocutaneous fistula | 1 (16.66%) |
| Nephrolithotomy | 0 | 0 | 0 | 0 |
| Nephrectomy | 1 - Intestinal sub-occlusion | 0 | 1 - Stercoral peritonitis | 2 (40%) |