ABO blood type, diabetes and risk of gastrointestinal cancer in northern China.

Aim: To explore the potential risk factors related to gastrointestinal cancer in northern China.

Methods: A total of 3314 cases of gastrointestinal cancer (esophageal, gastric, pancreatic and biliary) and 2223 controls (including healthy individuals, glioma and thyroid cancer) were analyzed by case-control study. Multivariable logistic regression analysis was applied to evaluate the association between different cancers and hepatitis B surface antigen, sex, age, blood type, diabetes, or family history of cancer.

[Treatment of postoperative endophthalmitis following cataract surgery without intraocular lens removal].

Objective: To explore the effects of vitrectomy combined with silicone oil injection on the treatment of postoperative endophthalmitis following cataract surgery without intraocular lens removal, and to analyze the relative factors.

Methods: This was a retrospective case series study. Clinical data of 7 eyes of 7 patients with postoperative endophthalmitis following cataract surgery underwent the treatment of vitrectomy combined with silicone oil injection without intraocular lens removal from 2003 to 2008 were collected.

[The expression of vascular endothelial growth factor of vitreous in patients with proliferative diabetic retinopathy].

Objective: To explore the expression of vascular endothelial growth factor of vitreous in patients with proliferative diabetic retinopathy, and to analyze the relative factors.

Methods: It was a case-control study. Data of 50 eyes of 50 PDR patients who underwent vitrectomy were retrospectively analyzed.