Intraoperative Ultrasound Staging for Colorectal Liver Metastases in the Era of Liver-Specific Magnetic Resonance Imaging: Is It Still Worthwhile?
Table 1
Preoperative and operative characteristics of 721 patients with 2845 CRLMs preoperatively assessed by MRI (whole population) and 232 patients who did not receive preoperative chemotherapy.
Characteristics
Whole population n = 721
Patients without chemotherapy n = 232
Age (years), median ± SD
64 ± 10.8
66 ± 10.0
Male, n (%)
453 (62.2)
149 (64.2)
BMI (kg/m2), median ± SD
25 ± 3.34
27 ± 4.0
Preoperative chemotherapy
489 (67.8)
—
Number of cycles, median ± SD
5 ± 6.5
—
Oxaliplatin based, n (%)
358 (49.7)
—
Irinotecan based, n (%)
208 (28.8)
—
Biologics, n (%)
309 (42.9)
—
Response to chemotherapy
PR
306 (62.6)
—
SD
154 (31.5)
—
PD
29 (5.9)
—
Preoperative radiologic workup
PET total body, n (%)
317 (44)
107 (46.1)
Number of LMs, median (range)
2 (1–31)
1 (1–4)
Maximum diameter (mm), median ± SD
24 ± 22.05
19.4 ± 23.0
Types of resection
(1) Minor hepatectomy, n(%)
592 (82.1)
194 (83.6)
(2) Laparoscopic resection, n(%)
103 (14.3)
62 (26.7)
(3) Redo-resection, n(%)
50 (6.9)
28 (18)
BMI, body mass index; PR, partial response; SD, stable disease; PD, progression disease. Rates calculated on 489 patients who received preoperative chemotherapy.
