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Table 1 Clinical characteristics of the 198 Japanese cases of small intestinal arteriovenous malformations

From: Recurrent massive bleeding from a small intestinal arteriovenous malformation after surgery for biliary atresia in an infant: a case report and literature review

Characteristic Value
Age -median (range) 59 yr (2 mo–95 yr)
Sex -no. (%)
 Male 115 (58.1)
 Female 83 (41.9)
Lesion number and location -no. (%)
 Isolated lesion 173 (87.4)
  Jejunum 98 (49.5)
  Ileum 62 (31.3)
  Small intestine 13 (6.6)
 Multiple or diffuse lesion 25 (12.6)
  Diffuse lesion 3 (1.5)
  Multiple lesions within the small intestine 7 (3.5)
 Coexisting lesion other than small intestinea 13 (6.6)
   Large intestine 10 (5.1)
   Duodenum 2 (1.0)
   Stomach 1 (0.5)
   Pancreas 2 (1.0)
   Liver 1 (0.5)
Coexisting conditionsa -no. (%)
 Any 66 (33.3)
 Liver disease 31 (15.7)
 Cardiovascular disease 20 (10.1)
 Diabetes mellitus 12 (6.1)
 Renal disease 9 (4.5)
 Other 21 (10.6)
 Examination, n (positiveb/totalc)
 Angiography (124/133)
 Contrast-enhanced CT (40/66)
 Endoscopyd (59/60)
Treatment, n (%)
 Operation 139 (70.2%)
 Operation followed IVRe 28 (14.1%)
 IVRe 19 (9.6%)
  Re-bleeding 11
  Perforation 3
 Endoscopic hemostasis 5 (2.5%)
  Re-bleeding 9
 Conservation 7 (3.5%)
  1. aSome patients had several diseases or lesions
  2. bTotal number of performed examinations
  3. cNumber of examinations with positive findings
  4. dNumber of examinations including capsule endoscopy, small bowel endoscopy, and intraoperative endoscopy
  5. eInterventional radiology