Objective To introduce the methods and the advancements of early diagnosis in primary carcinoma of gallbladder (PCG), and improve the early diagnostic rate of PCG. Methods Recent relevant literatures were reviewed. Results It was difficult in early diagnosis of PCG and with a poor prognosis. Comprehending case history and careful examination and being assisted by multiple imaging methods and molecular biology technology could markedly improve the early diagnostic rate. Conclusion Comprehending the progress will contribute a lot of improving the early diagnostic rate and selecting reasonable clinical methods to be used in early diagnosis of PCG.
Objective To investigate the expressions of hypoxia-inducible factor-1α (HIF-1α) and caudal homeobox gene 2 (CDX2) in colorectal adenocarcinoma, and the relationships between them and the clinicopathologic factor of colorectal adenocarcinoma. Methods The expressions of HIF-1α and CDX2 were detected by immunohistochemistry in 62 specimens of colorectal adenocarcinoma and 20 specimens of normal colorectal mucosa tissue. The correlation between the expressions of HIF-1α and CDX2 was analyzed by Spearman rank correlation analysis. Results The positive rates of HIF-1α expression in normal colorectal mucosa tissue and colorectal adenocarcinoma were 5.0% （1/20） and 62.9% （39/62）, CDX2 were 95.0% （19/20） and 69.4% （43/62）, the differences of positive rate between different tissues were significant （Plt;0.05）. In colorectal adenocarcinoma, the expression of HIF-1α or CDX2 was related to tumor differentiation, lymph node metastasis, and Dukes staging (Plt;0.05). There was a negative correlation between HIF-1α and CDX2 expressions in colorectal adenocarcinoma （r=－0.293 2，Plt;0.05）. Conclusions The up-regulation of HIF-1α and down-regulation of CDX2 may be involved in the genesis of colorectal adenocarcinoma， and there is a negative correlation between the two kinds of protein. HIF-1α may participate in modulation of CDX2 expression and lead to accelerate the progression of colorectal carcinoma.