Lower gastrointestinal bleeding: Role of 64-row computed tomographic angiography in diagnosis and therapeutic planning

Table 1 Summary of 64-row computed tomographic angiography findings according to anatomic location

Location	Acute lower GI bleeding present1 (n = 60)		Acute lower GI bleedingabsent (n = 192)
	True-positive findings	False-negative findings	True-negative findings	False-positive findings
Jejunum	15	1	47	0
Ileum	29	2	32	0
Colon	12	0	51	0
Rectum	1	0	62	0
Total (n = 252)	57	3	192	0

¹According to the results of conventional angiography or surgery. Data are the numbers of anatomic locations. GI: Gastrointestinal.

Table 2 Assessment of treatment planning with computed tomographic angiography and actual treatment performed based on computed tomographic angiography in patients with lower gastrointestinal bleeding

Treatment method	Treatment planning by CTA	Actual treatment performed
Endovascular treatment	32	36
Surgical resection	25	24
Conservative treatment	6	3

CTA: Computed tomographic angiography.

Table 3 Summary of actual treatment performed according to anatomic location

Location	Endovascular or surgical treatment (n = 60)		Conservative treatment(n = 192)
	True-positive findings	False-negative findings	True-negative findings	False-positivefindings
Jejunum	15	1	47	0
Ileum	29	2	32	0
Colon	11	1	51	0
Rectum	1	0	62	0
Total (n = 252)	56	4	192	0