Assessment of incidental focal colorectal uptake by analysis of fluorine-18 fluorodeoxyglucose positron emission tomography parameters

Table 1 Demographic and clinical characteristics of patients with incidental focal hypermetabolism in the colon and/or rectum (n = 80)

Nature of incidental focal hypermetabolism	Characteristics	Men	Women	Total, %
Malignant	Subjects (n)	16	8	24
(lesions, n = 24)	Age (yr, mean ± SD)	70.1 ± 11.5	72.5 ± 14.1	71 ± 12.1
	Primary malignancy (n)
	Lung	5	0	5 (20.8)
	Stomach	5	0	5 (20.8)
	Breast	0	3	3 (12.5)
	Prostate	1	0	1 (4.2)
	Lymphoma	0	1	1 (4.2)
	Hepatobiliary	2	1	3 (12.5)
	Other	3	3	6 (25.0)
Premalignant	Subjects (n)	20	6	26
(lesions, n = 27)	Age (yr, mean ± SD)	67.9 ± 6.4	68.8 ± 18.7	68.1 ± 10.1
	Primary malignancy (n)
	Lung	10	1	11 (42.3)
	Stomach	4	1	5 (19.2)
	Breast	0	0	0 (0.0)
	Prostate	2	0	2 (7.7)
	Lymphoma	1	1	2 (7.7)
	Hepatobiliary	2	2	4 (15.4)
	Other	1	1	2 (7.7)
Malignant/	Subjects (n)	36	14	50
Premalignant	Age (yr, mean ± SD)	68.9 ± 8.94	70.9 ± 15.7	69.4 ± 11.1
(lesions, n = 51)	Primary malignancy (n)
	Lung	15	1	16 (32.0)
	Stomach	9	1	10 (20.0)
	Breast	0	3	3 (6.0)
	Prostate	3	0	3 (6.0)
	Lymphoma	1	2	3 (6.0)
	Hepatobiliary	4	3	7 (14.0)
	Other	4	4	8 (16.0)
Benign	Subjects (n)	9	21	30
(lesions, n = 32)	Age (yr, mean ± SD)	58.9 ± 13.9	58.9 ± 13.3	58.9 ± 13.3
	Primary malignancy (n)
	Lung	3	2	5 (16.7)
	Stomach	3	5	8 (26.7)
	Breast	0	4	4 (13.3)
	Prostate	1	0	1 (3.3)
	Lymphoma	0	1	1 (3.3)
	Hepatobiliary	2	2	4 (13.3)
	Other	0	7	7 (23.3)

yr: Year; SD: Standard deviation.