CT Imaging Findings after Stereotactic Radiotherapy for Liver Tumors

Table 1

Clinical characteristics and treatment response by the different groups of treated lesions.

	Hepatocellular carcinoma	Metastases	Cholangiocarcinoma
of patients/ of lesions	32/36	20/24	7/7
Age (yrs)	68 ± 13	68 ± 12	66 ± 11
Male to female ratio	27 (84%) : 5 (16%)	14 (70%) : 6 (30%)	4 (57%) : 3 (43%)
Follow-up time (months)	5.6 ± 7.1	6.4 ± 5.1	10.1 ± 4.8
Response
Complete response	4 (11%)	1 (4%)	0
Partial response	25 (69%)	14 (58%)	7 (100%)
Partial response followed by recurrence	2 (6%)	4 (17%)	0
No response	5 (14%)	5 (21%)	0
Liver parenchyma surrounding the treated lesion
Hyperdense	27 (75%)	21 (88%)	7 (100%)
Isodense	8 (22%)	3 (12%)	0
Hypodense	1 (3%)	0	0

30% decrease in long diameter.
20% increase in long diameter from nadir.