Selection of treatment modalities for hepatocellular carcinoma at stages T1 and T2: A preliminary analysis based on the Surveillance, Epidemiology, and End Results registry database.

PURPOSE: To explore the selection of treatment modalities for hepatocellular carcinoma (HCC) at stages T1 and/or T2 and to compare the survival of patients treated with surgery alone vs radiation therapy (RT) alone. METHODS: Surveillance, Epidemiology, and End Results (SEER) database was used to identify the patients diagnosed with HCC between 2004 and 2013. The tumor-nodemetastasis (TNM) stage was established according to the American Joint Committee on Cancer (AJCC) Staging. After age, sex, TNM stage, and tumor extension were matched, the survival was further compared between patients undergoing surgery alone vs RT alone. RESULTS: Of 11967 patients at stages T1 (n=7829) and T2 (n=4138), 10449 (87.31%) underwent surgery alone, 1241 (10.37%) RT alone, and 277 (2.32%) surgery combined with RT. Compared with those treated with RT alone and in combination with surgery, patients treated with surgery alone were younger, with smaller tumor size, higher proportion of females, single lesion, and AJCC stage I/II, and lower proportion of regional and distant lymph nodes, bone, brain, and lung invasion. Among them, 758 pairs (surgery alone and RT alone) at stage T1 and 430 pairs (surgery alone and RT alone) at stage T2 were matched. Regardless of stage T1 or T2, patients undergoing surgery alone had a significantly better cumulative survival than those undergoing RT alone (p<0.001). CONCLUSION: The treatment selection of HCC was dependent on the age, sex, tumor size, number of lesions, and extrahepatic invasion. Surgery alone should be the preferred treatment modality of HCC at stages T1 and T2.

Associations of gallbladder and gallstone parameters with clinical outcomes in patients with cirrhosis.

Background: Morphologic changes in the gallbladder and gallstones are common in cirrhotic patients, but their associations with outcomes of cirrhotic patients are unclear. Methods: We retrospectively enrolled 206 cirrhotic patients and measured their gallbladder length and width, gallbladder wall thickness, presence of gallstones, and gallstones' length and width in axial contrast-enhanced computed tomography (CT) images. X-tile software was utilized to calculate the optimal cutoff values of these parameters for evaluating survival and hepatic decompensation events in the cirrhosis group. Their associations with survival were explored by Cox regression analyses and Kaplan-Meier curve analyses. Their associations with hepatic decompensation events were evaluated by competing risk analyses and Nelson-Aalen cumulative risk curve analyses where death was a competing event. Results: Cirrhotic patients with gallbladder length < 72 mm had a significantly higher cumulative survival rate than those with a length of ≥ 72 mm (P = 0.049 by log-rank test), but gallbladder width, gallbladder wall thickness, presence of gallstones, and gallstones' length and width were not significantly associated with survival (P = 0.10, P = 0.14, P = 0.97, P = 0.73, and P = 0.73 by log-rank tests, respectively). Cirrhotic patients with gallbladder wall thickness < 3.4 mm had a significantly lower cumulative rate of hepatic decompensation events than those with a wall thickness of ≥ 3.4 mm (P = 0.02 by Gray's test), but gallbladder length and width, presence of gallstones, and gallstones' length and width were not significantly associated with hepatic decompensation events (P = 0.15, P = 0.15, P = 0.54, P = 0.76, and P = 0.54 by Gray's tests, respectively). Conclusion: Changes in gallbladder length and gallbladder wall thickness, rather than gallstone parameters, may be in parallel with the long-term outcomes of cirrhotic patients.

Efficacy and safety of external-beam radiation therapy for hepatocellular carcinoma: An overview of current evidence according to the different target population.

Hepatocellular carcinoma (HCC) is one of the most common malignant tumors. During the recent years, external-beam radiation therapy (EBRT) has been safely and effectively employed for the management of HCC. We overviewed the current evidence regarding the efficacy and safety of EBRT for HCC according to the different target population. PubMed database was searched for identifying English-language full-text articles regarding EBRT for the treatment of HCC. Search items were "hepatocellular carcinoma AND radiation therapy". Until now, preliminary evidence has suggested the following role of EBRT for HCC. 1) EBRT, especially stereotactic body radiation therapy, is an emerging choice of therapy for small HCC. 2) EBRT combined with non-surgical treatment can achieve an excellent intrahepatic tumor control and a potential survival benefit for huge HCC. 3)Adjunctive EBRT may improve the efficacy of transarterial chemoembolization for HCC with portal vein tumor thrombosis. 4) EBRT can relieve the pain and improve the quality of life for patients with extrahepatic metastases. 5) EBRT may be a bridge to liver transplantation by minimizing the tumor progression. 6) Adjunctive EBRT may reduce the tumor recurrence and improve the survival after resection. In summary, EBRT is a promising choice of treatment of HCC. However, more high-quality evidence is needed to further establish the status of EBRT for the management of HCC.

Escherichia coli from Crohn's disease patient displays virulence features of enteroinvasive (EIEC), enterohemorragic (EHEC), and enteroaggregative (EAEC) pathotypes.

BACKGROUND: Escherichia coli is a normal inhabitant of the gut which upon acquiring virulence factors becomes potentially able to cause diseases. Although E. coli population augments in Crohn's disease (CD), the reason of this proliferation is not yet clear. CD associated E. coli shows features of extraintestinal pathogenic categories (ExPEC), and eventually the ability to invade cultured epithelial cells, a property observed among diarrheagenic E. coli (DEC). In this work, data on the characterization of an E. coli isolate from a CD patient reveal that, besides invasiveness, CD associated E. coli may harbor other typical DEC markers, namely those defining enterohemorragic (EHEC) and enteroaggregative (EAEC) pathotypes. RESULTS: The studied strain, detected both in an ileum biopsy and stools, belonged to the B2 E. coli reference collection (EcoR) phylogroup and harbored the intimin, Shiga cytotoxin 1, and AggR transcriptional activator encoding genes (eae, stx1, aggR, respectively); displayed aggregative adherence to Hep-2 cells and an ability to enter Caco-2 cells four times as high as that of EIEC reference strain and half of invasiveness of AIEC LF82. It was able to enter and replicate in J774 macrophages with invasiveness 85 times as high as that of LF82, but with only one sixth of the intracellular proliferation ability of the later. Extracellular products with cytotoxic activity on Vero cells were detected in strain's cultures. Preliminary analysis indicated similarity of this strain's genome with that of O104:H4/2011C-3493. METHODS: Following its isolation from a resected CD patient, the strain was characterized by in vitro adhesion and invasion assays to Hep-2, invasion to Caco-2 cells and to J774 macrophages and tested for the ability to form biofilm and to produce Shiga cytotoxins. PCRs were carried out to identify virulence genetic markers and for EcoR phylogrouping. The strain's genome was sequenced by means of Ion torrent PGM platform. CONCLUSION: The detection, in a CD patient, of an E. coli combining virulence features of multiple DEC pathotypes seems not only to stress the relevance of E. coli to CD etiopathogenesis but also to indicate the existence of new and potentially more virulent strains putatively associated with this disease.