TABLE 1.

Characteristics and surveillance intervals in the first 2 years of patients with primary retroperitoneal well-differentiated liposarcoma who underwent surgical resection

Patient characteristics (n = 91)
Age at diagnosis, years; median (range)	61 (32–83)
Gender, n
Female	43 (47.3%)
Male	48 (52.7%)
Tumor size, cm; median (range)	30 (6–100)
Multifocal, n (%)
No	75 (82.4%)
Yes	16 (17.6%)
Resection type, n (%)
R0/R1	85 (93.4%)
R2	3 (3.3%)
Unknown	3 (3.3%)
Number of organs resected, n (%)
0	53 (58.2%)
1	13 (14.3%)
2	7 (7.7%)
3	8 (8.8%)
4 or more	9 (9.9%)
Surveillance intervals, n (%)
< Every 3 months	11 (12.1%)
Every 3 months	35 (38.4%)
Every 4 months	27 (29.7%)
Every 5 months	5 (5.5%)
Every 6 months	7 (7.7%)
> Every 6 months	6 (6.6%)

R0/R1: macroscopic complete resection; R2: macroscopic incomplete resection