Table 2.

Tumor Characteristics (n=138)

Median target tumor size (longest diameter), cm (range)	2.7 (1–14.5)
Biopsy site, n
Abdominal or pelvic mesenteric masses	40 (29%)
Liver parenchyma	39 (28%)
Lymph nodes
Iliac/inguinal	15 (11%)
Neck	12 (9%)
Retroperitoneal	10 (7%)
Axillary	3 (2%)
Abdominal/chest wall	12 (9%)
Lung (pleural/parenchymal)	4 (3/1; 3%)
Psoas muscle, vaginal wall, adrenal	1 each (2%)
No of tumor cores, median (range)
Baseline	3 (1–6)
2nd and 3rd time point	3 (1–6)
No (%) of pts with paired tumor core biopsy*	96 (70%)
No (%) of pts with baseline biopsy only**	42 (30%)

^*Biopsy was aborted in 4 patients due to cystic lesion (3) and safety (1).

^**26 (26/138; 19 %) patients refused the second biopsy, 2 (1%) patients were off the study due to toxicities prior to second biopsy, 2 (1%) patients’ tumors with interval shrinkage were too small to be biopsied, unknown reasons in 12 (9%) patients.