Table 1.
The perioperative treatment and postoperative outcome parameters
| Parameter | Variable | Value (n) |
|---|---|---|
| Gender | Female | 5 |
| Male | 5 | |
| Age | Years, median (range) | 58 (40–76) |
| Radiochemotherapy | Neoadjuvant (with additional hyperthermia) | 6 (1) |
| Adjuvant | 0 | |
| None | 4 | |
| Chemotherapy | Adjuvant | 1 |
| None | 3 | |
| Origin | Retroperitoneal | |
| Left | 4 | |
| Right | 6 | |
| Operative procedures performed | Laparotomy, midline | 10 |
| En bloc compartmental resection + 0 organs | 2 | |
| En bloc compartmental resections + 1 organ | 3 | |
| En bloc compartmental resections + 2 organs | 4 | |
| En bloc compartmental resections + 3 organs | 1 | |
| Resected organs | Kidney | 4 |
| Intestine, large | 6 | |
| Adrenal gland | 2 | |
| Orchiectomy | 2 | |
| Operation time | Minutes, median (range) | 253 (165–458) |
| Specific perioperative complications: | Major | 2 |
| Necessitating laparotomy | 2 | |
| Anastomotic insufficiency bowel | 1 | |
| Minor | 2 | |
| Urinary tract infection (Candida) | 1 | |
| Diarrhea (C. difficile) | 1 | |
| Hospital stay | Duration (days) | 15.2 (11–21) |
| Pathologic dimension | Median | 360 (300–440) |
| > 300 and < 350 mm | 4 | |
| > 350 and < 400 mm | 4 | |
| > 400 mm | 2 | |
| Surgical margins | Wide (R0) | 3 |
| Marginal (R1) | 7 | |
| Intralesional (R2) | 0 | |
| Histology | Dedifferentiated | 10 (100%) |
| Tumor response | Radiologic (RECIST) | |
| Regressive | 0 | |
| Stable | 6 (100%) | |
| Progressive | 0 | |
| Histologic (% tumor vitality) | ||
| < 20 | 0 | |
| 20–30 | 1 | |
| 30–60 | 3 | |
| 60–90 | 2 | |
| > 90 | 0 | |
| Tumor relapse | Site of recurrence | |
| Local | 3 | |
| Local metastatic (abdominal/peritoneal) | 2 | |
| Metastatic (pulmonal/cerebral) | 1 | |