Objective To analyze the imaging features of gastrointestinal stromal tumor(GIST).Methods Imaging features and differential diagnosis of GIST proved surgically and pathologically in 21 cases were studied retrospectively.Results The lesions occurred in esophagus in 1,stomach in 15,small intestine in 3 and colon in 2.The findings of barium meal examination included flattened or shifed mucosal folds(6/21),filling defect(8/21) and extralumially oppressed sign(2/21).CT showed extralumial or intraluminal mass with homogeneous density in 12 cases,liquid-dense necrosis in 6 cases and calcification within tumor in 2 cases.Remarkable enhancement was noted in all tumors,heterogeneous and homogeneous enhancement were showed in 17 and 3 cases respectively.Conclusion GIST is one of the most common gastrointestinal mesenchymal tumors.CT is an effective and useful modality in the diagnosis of GIST.

Objective To investigate the clinical value of para-aortic lymphadenectomy in patients with cervical cancer in stage Ⅰ B2 and Ⅱ A2.Methods One hundred and six patients with cervical cancer in stage Ⅰ B2 and Ⅱ A2 were assigned into two groups:control group(55 patients,radical hysterectomy and pelvic lymphadenectomy) and study group (51 patients,radical hysterectomy,pelvic lymphadenectomy and para-aortic lymphadenectomy).Postoperative radiotherapy or chemotherapy was conducted appropriately.Intraoperative and postoperative characteristics,recurrence rate,survival rate were compared between two groups.Results In study group,the recurrence rate was 15.7 ％ (8/51),and in control group,the recurrence rate was 38.2％(21/55),there was significant difference (P ＜ 0.05).No significant difference were observed in the complication incidence [27.5％ (14/51) vs.30.9％ (17/55)],blood loss [(326.1 ± 59.1) ml vs.(316.1 ± 51.2) ml] and pelvic lymph node-positive rate [56.9％ (29/51) vs.58.2 ％ (32/55)](P ＞ 0.05).The incidence of para-aortic lymph node metastasis was 17.6 ％ (9/51).Positive correlation was observed between the number of the pelvic lymph node metastasis and para-aortic lymph node metastasis (P ＜ 0.01).Conclusions In cervical cancer,the number of the pelvic lymph node metastasis was associated with para-aortic lymph node metastasis,abdominal aortic lymphadenectomy in radical surgery for cervical cancer is safe and feasible and can improve the prognosis of the patients.

OBJECTIVETo assess the association of IFNG gene polymorphisms with preeclampsia among pregnant woman from Shaanxi Province.

METHODSGenomic DNA was extracted from peripheral blood samples collected from 280 patients with preeclampsia and 344 healthy pregnant women. Five tag single nucleotide polymorphisms (SNPs) of the IFNG gene (rs2069705, rs2430561, rs1861493, rs2069718, and rs2193050) were genotyped with a SNaPshot method. Genotypic and allelic frequencies were evaluated with a Chi square test. Genotype data was corrected by Logistic regression for body mass index and age. The level of IFN-gamma was determined with an ELISA assay.

RESULTSThe distribution of five tag SNPs all conformed to Hardy-Weinberg equilibrium (P> 0.05). Significant association with preeclampsia was found with the T allele of rs2430561 (OR=1.54, 95% CI:1.15-2.09, P=6.99× 10), under a dominant model (OR=3.77, 95% CI: 1.09-13.29, P=0.029) and a recessive model (OR=1.53, 95% CI:1.09-2.15, P=0.018). For the patient group, the IFN-gamma level of those with a TT genotype for rs2430561 was significantly higher than those with an AA or AT genotype [(13.69± 0.79) pg/mL vs. (13.11± 1.56) pg/mL, P< 0.05].

CONCLUSIONPolymorphism of the rs2430561 locus of the IFNG gene is associated with increased risk for preeclampsia as well as serum level of IFN-gamma among pregnant woman from Shaanxi. The role of the IFNG gene in the regulation of preeclampsia requires further investigation.

Adult ; Female ; Genetic Predisposition to Disease ; Genotype ; Humans ; Interferon-gamma ; blood ; genetics ; Logistic Models ; Polymorphism, Single Nucleotide ; Pre-Eclampsia ; etiology ; genetics ; Pregnancy