Paired boxed gene 1 expression: A single potential biomarker for differentiating endometrial lesions associated with favorable outcomes in patients with endometrial carcinoma.

AIM: Paired boxed gene 1 (PAX1) has previously been reported to be a methylation-silenced gene in cases of cervical and ovarian cancers. We evaluated the expression of PAX1 in normal endometrium, endometrial hyperplasia and endometrial carcinoma (EC), and investigated the prognostic value of PAX1 expression in patients with EC. METHODS: We conducted a hospital-based retrospective review of PAX1 distribution immunohistochemically in 201 samples of endometrium from biopsy or hysterectomy. PAX1 immunoreactivity was classified into low and high score groups based upon the extent and intensity of staining. RESULTS: There was intense intranuclear staining for PAX1 in premalignant endometrial lesions. A high PAX1 score was observed in a high percentage of samples of normal endometrium (93.3%), in endometrial hyperplasia without atypia (97.2%) and in endometrial atypical hyperplasia (87.5%), but this level was found in only one-third of the EC samples (30.1%). The PAX1 protein score was significantly higher in samples of premalignant endometrial lesions compared with those of EC (P < 0.001). Importantly, a higher PAX1 score in EC cases was correlated with good overall survival, with a hazard ratio of 0.22 for death (95% confidence interval, 0.05-0.96). CONCLUSIONS: PAX1 protein expression is a potential histopathology biomarker for the differential diagnosis of malignant and premalignant endometrial lesions. PAX1 is also a potential prognostic marker in cases of EC.

Factors for early tumor recurrence of single small hepatocellular carcinoma after percutaneous radiofrequency ablation therapy.

AIM: To evaluate the factors affecting the early tumor recurrence within one year in cirrhotic patients having a single small hepatocellular carcinoma (HCC) after complete tumor necrosis by radiofrequency ablation (RFA) therapy. METHODS: Thirty patients with a single small HCC received RFA therapy by a RFA 2000 generator with LeVeen needle. Tri-phase computerized tomogram was followed every 2 to 3 mo after RFA. The clinical effects and tumor recurrence were recorded. RESULTS: The initial complete tumor necrosis rate was 86.7%. Twenty-two patients were followed for more than one year. The local and overall recurrence rates were 13.6% and 36.4%, 33.3% and 56.2%, 46.6% and 56.2% at 12, 24 and 30 mo, respectively. No major complication or procedure-related mortality was found. The risk factors for early local tumor recurrence within one year were larger tumor size, poor pathologic differentiation of tumor cells and advanced tumor staging. The age of patients with new tumor formation within one year was relatively younger (55.1+/-8.3 vs 66.7+/-10.8, P = 0.029). CONCLUSION: Large tumor size, poor pathologic differentiation of tumor cells and advanced tumor staging are the risk factors for early local tumor recurrence within one year, and young age is the positive predictor for new tumor formation within one year.

Clip-assisted endoscopic method for placement of a nasoenteric feeding tube into the distal duodenum.

Gastroenterologists are often frustrated in their efforts to deliver a feeding tube by endoscopic guidance into the small bowel because of retrograde migration during the withdrawal of the endoscope. We describe a clip assisted endoscopic method whereby a nasoenteric feeding tube can be reliably delivered into the distal duodenum. A nasoduodenal tube with a 3-0 silk suture sewn on its distal tip is inserted into the stomach. The suture on the feeding tube is grasped by a clip-fixing device. Then, the endoscope with feeding tube is advanced into the distal duodenum and the tube is fixed on a mucosal fold by clipping. We used this technique to successfully place nasoenteric tubes into the distal duodenum in 9 patients. There were no procedure-related complications, and no bleeding or perforation due to removal of the feeding tubes was observed. We conclude that this clip-assisted endoscopic method is a reliable modality for placing nasoenteric tubes.

Endoscopic treatment in a patient with obstructive jaundice caused by pancreatic pseudocyst.

We report a case of chronic alcoholic pancreatitis with obstructive jaundice due to compression of the common bile duct by pancreatic pseudocyst. Ultrasonography and computed tomographic scan on admission demonstrated an 8 cm cystic lesion located at the head of the pancreas. Endoscopic retrograde cholangiopancreatography (ERCP) revealed a segment of narrowing at the distal common bile duct which was compressed by the pancreatic pseudocyst. Communication between the cyst and pancreatic duct was also noted. Bacteriological examination of cystic contents yielded the growth of Proteus vulgaris, Morganella morganii, Stenotrophomonas maltophilia and Pseudomonas aeruginosa. The patient was treated with broad-spectrum antibiotic, endoscopic sphincterotomy, endoscopic nasopancreatic duct drainage, and transpapillary pancreatic endoprosthesis. Jaundice subsided gradually during admission and a marked reduction of pancreatic pseudocyst was found 18 months after discharge.

Clinical effects of intra-arterial infusion chemotherapy with cisplatin, mitomycin C, leucovorin and 5-flourouracil for unresectable advanced hepatocellular carcinoma.

BACKGROUND: Intra-arterial infusion chemotherapy (IAIC) can potentially improve survival in some patients with hepatocellular carcinoma (HCC), but the ideal regimen is not yet established. We prospectively evaluated the effects of short-course continuous infusion with the combination of cisplatin, mitomycin C, 5-fluorouracil (5-FU) and leucovorin for unresectable advanced HCC and analyzed their prognostic factors. METHODS: Patients with unresectable advanced HCC and not suitable for other therapy were enrolled. Cannulation via the left subclavian artery with the tip of catheter at the proper hepatic artery was done before initialization of IAIC routinely. The regimen consisted of the daily administration of cisplatin (10 mg/m2), mitomycin C (2 mg/m2), leucovorin (15 mg/m2), and daily infusion of 5-FU (100 mg/m2) for 5 days. Only the patients that had received at least 2 courses of IAIC were evaluated. RESULTS: Two-hundred and 11 courses of IAIC were performed, and each patient received at least 2 cycles of chemotherapy. The overall response rate was 28.3%. We observed a complete response in 5 patients (9.4%), a partial response in 10 patients (18.9%), a minimal response in 5 patients (9.4%), no change in 11 patients (20.8%) and a progressive disease in 22 patients (41.5%). The patients with response to treatment survived longer than the patients without response (24.6 +/- 14.2 months vs 8.7 +/- 5.3 months, p < 0.001). In univariate and multivariate analysis, absence of main vessel thrombosis and alpha-fetoprotein (AFP) reduction percentage > 50% following treatment showed significance in our study. All side effects subsided after conservative treatment. CONCLUSIONS: Continuous IAIC with cisplatin, mitomycin-C, leucovorin, and 5-FU is effective for patients with severe advanced HCC. Absence of main vessel thrombosis, and AFP reduction percentage > 50% following treatment were good predictors of treatment response in our study. All side effects were mild and tolerable.

Endoscopic ligation vs. nadolol in the prevention of first variceal bleeding in patients with cirrhosis.

BACKGROUND: The value of band ligation for prevention of the first episode of variceal bleeding has not been fully evaluated. This study compared the efficacy and safety of band ligation vs. treatment with a beta-blocker for the prophylactic prevention of first bleeding in patients with cirrhosis and high-risk esophageal varices. METHODS: A total of 100 patients with cirrhosis and endoscopically determined high-risk esophageal varices but no history of bleeding were randomized to band ligation (50 patients) or treatment with nadolol (50 patients). In the ligation group, two to 4 elastic bands were deployed during each session. Ligation was repeated at intervals of 3 to 4 weeks until variceal obliteration was achieved. In the nadolol group, the dose of the drug, administered once daily, was sufficient to reduce the pulse rate by 25%. RESULTS: In the ligation group, variceal obliteration was achieved in 41 patients (82%), at a mean of 2.7 (1.1) ligation sessions. In the nadolol group, the mean daily dose of nadolol administered was 60 (20) mg. During follow-up (median approximately 22 months), 10 patients (20%) in the ligation group and 16 (32%) in the nadolol group had upper-GI bleeding (p=0.23). Esophageal variceal bleeding occurred in 5 patients (10%) in the ligation group and 9 (18%) in the nadolol group (p=0.31). By multivariate Cox analysis, Child-Pugh class was the only factor predictive of variceal bleeding. Minor complications were noted in 9 patients (18%) in the ligation group and 4 (8%) in the nadolol group (p=0.35). No serious complication was encountered. Twelve patients in the ligation group and 11 in the nadolol group died (p=0.62). One patient in the ligation group and 3 in the nadolol group died from uncontrollable variceal hemorrhage. CONCLUSIONS: Variceal ligation is as effective and as safe as treatment with nadolol for prevention of first variceal bleeding in patients with cirrhosis.

A prospective, randomized trial of endoscopic hemoclip placement and distilled water injection for treatment of high-risk bleeding ulcers.

BACKGROUND: Although endoscopic hemoclip therapy is widely used in the treatment of GI bleeding, there are few prospective trials that assess its efficacy. This study evaluated the efficacy and safety of hemoclip placement and distilled water injection for the treatment of high-risk bleeding ulcers. METHODS: Seventy-nine patients with major stigmata of ulcer hemorrhage were randomly assigned to either endoscopic hemoclip placement (n = 39) or injection with distilled water (n = 40). RESULTS: Initial hemostasis was achieved in all patients treated with hemoclips and 39 treated by distilled water injection (respectively, 100.0% vs. 97.5%; p = 1.00). Bleeding recurred in 4 and 11 of patients, respectively, in the hemoclip and water injection groups. It occurred significantly more frequently in the injection group (hemoclip, 10.3%; injection, 28.2%; p = 0.04). No major procedure-related complication occurred in either group. Emergency operations were performed in 5.1% of patients treated with hemoclips versus 12.5% of those in the water injection group (p = 0.43). Hospital days and mortality rate were similar in both groups. CONCLUSION: Endoscopic hemoclip placement is a safe and effective hemostatic method that is superior to distilled water injection for treatment of bleeding peptic ulcer.