Application of the guidewire-assisted biopsy and balloon dilatation cytology smear through ERCP in diagnosis of patients with hilar cholangiocarcinoma / 中国内镜杂志

Objective?To evaluate the application of guidewire-assisted biopsy and balloon dilatation cytology smear through ERCP in diagnosis of patients with hilar cholangiocarcinoma.?Methods?During the ERCP procedure, 52 patients with hilar cholangiocarcinoma were treated with balloon dilatation, and cytology smear from the surface of the balloon. At the same time, biopsy forceps assisted by guidewire inserted into the bile duct to biopsy the lesion and obtain specimens.?Results?Success rate of obtaining histopathological through ERCP guidewire assisted biopsy in biliary bile duct was 100.0%, 31 cases were histological diagnosed by forceps biopsy in 52 cases, positive diagnosis rate was 59.6%; The patient with balloon dilatation in 52 cases give cytology smears obtained diagnosis in 22 cases, the positive rate was 42.3%; cytology smear combined with biopsy, a total of 34 cases were diagnosed, the positive rate was 65.4%. There was no serious complications occurred.?Conclusion?Biopsy assisted by guidewire through ERCP is a safe, simple, easy technique and an effective means of obtaining pathological, meanwhile, the cytology smear after balloon dilatation can be used as a supplement to biopsy, and provides an effective means in pathological diagnosis of hilar cholangiocarcinoma.

Association between expressions of HSP70, HSP90 and efficacy of chemotherapy in colorectal cancer patients with unresectable liver metastasis / 中华胃肠外科杂志

<p><b>OBJECTIVE</b>To investigate the association between expressions of HSP70, HSP90 and efficacy of chemotherapy in colorectal cancer patients with unresectable liver metastasis.</p><p><b>METHODS</b>Data of 52 colorectal cancer cases, whose primary colorectal focuses were resected but hepatic metastatic tumors were unresectable, were reviewed retrospectively. All the patients underwent FOLFOX4 regimen well. Immunohistochemistry assay was applied to determine the expressions of HSP70 and HSP90 in primary focus tissues. The number and size of hepatic metastatic tumors pre- and post-chemotherapy were compared by CT scanning.</p><p><b>RESULTS</b>Partial remission(PR) rate was 33.3% in cases with up-regulated expression of HSP70, while 64.5% in cases with down-regulated expression of HSP70, whose difference was significant. PR rate was 50% in cases with up-regulated expression of HSP90, and 53.1% in the others with down-regulated expression of HSP90, whose difference was not significant.</p><p><b>CONCLUSIONS</b>FOLFOX4 regimen has advantages in cases with lower HSP70 expression over those with higher HSP70 expression. HSP90 expression level is not associated with the efficacy of FOLFOX4 regimen.</p>