Inverted Meckel's diverticulum as a cause of occult lower gastrointestinal hemorrhage

Table 1 Clinical characteristics, diagnostic modalities, and pathological finding of patients with inverted Meckel’s diverticulum

Clinical characteristics	n (%)
Gender[4-7,9-12,14-43]
Male	41/59 (69)
Female	18/59 (30)
Signs and symptoms[4-7,9-12,14-34,36-43]
Bleeding	48/59 (81)
Abdominal pain	41/59 (69)
Intussusception	23/59 (39)
Anemia	47/59 (80)
Diagnostic modalities[4-7,9-12,14-34,36-43]
Positive upper endoscopy	2/58 (3)
Positive lower endoscopy	4/59 (7)
Positive abdominal ultrasonography	12/13 (92)
Positive tagged RBC scan	0/3 (0)
Positive Meckel's scan	0/3 (0)
Positive barium enema	0/0
Positive enteroclysis	7/7 (100)
Positive upper GI series with small bowel follow through	18/21 (86)
Positive abdominal CT scan	24/24 (100)
Pathologic findings[4-7,9-12,14-34,36-43]
Ulceration	40/59 (68)
Ectopic gastric tissue only	18/59 (31)
Ectopic pancreatic tissue only	13/59 (22)
Ectopic gastric and pancreatic tissue	4/59 (7)
No ectopic tissue	24/59 (41)

GI: Gastrointestinal; CT: Computed tomography; RBC: Red blood cells.