Abstract: Objective
To evaluate the clinical and pathologic charateristics of children with bleeding and Meckel's diverticulum，so as to improve the level of diagnosis and treatment.
Methods
The clinical data of 60 patients diagnosed with bleeding and Meckel's diverticulum who were admitted to our hospital from January 2015 to December 2017 were collected. The diagnosis was confirmed by surgery and pathology. Clinical characteristics, auxiliary examinations and pathological results were analyzed.
Results
(1) In total, 60 children were diagnosed with bleeding MD. Of these,49 were male and 11 were female, with a male to female ratio of 4.45∶1.(2)There are many different degree of anemia, with 49（81.7%） to be moderate or severe anemia.(3)The associated symptoms were different among the patients:17(28.3%) patients had abdominal pain, 11(18.3%) had vomiting, 2(3.3%) had fever, and 38(63.3%) had no associated symptoms.(4)Totally 56 patients were examined by technetium-99m pertechnetate imaging. Among these patients, 54(96.4%) had positive results,2(3.6%) had negative results. （5）The postoperative histology revealed that ectopic gastric mucosa existed in 59 patients(98.3%), and both gastric and pancreatic ectopic tissue in 1 patient(1.7%).(6)The positive detection rate was significantly lower by ultrasonography than by technetium99m pertechnetate scan(P<0.05).(7)All the 60 patients underwent partial ileal resection. In the surgery, it was found that the distance from the diverticulum to the ileocecal valve was 10 to 80 cm (average 46.3±15.7 cm). Diverticulum length ranged from 2.0 to 6.0 cm.
Conclusion
Preoperative diagnosis of bleeding and Meckel diverticulum is difficult. Meckel diverticulum patients with bleeding usually lack specific clinical symptoms and typical signs. The disease develops fast. Technetium99m pertechnetate imaging may give higher diagnostic rate of bleeding and Meckel's diverticulum. Surgical resection is necessary once a diagnosis of bleeding MD is made.

Key words: Meckel's diverticulum, Bleeding, Technetium-99m pertechnetate, Children