As a doctor,the beneficene,responsibility,sympathy is the base,considering people,serving people,and summarizing people is the essence,bringing forth new ideas is the soul.The essay expound the point "Morality is important to be a doctor and bringing forth new ideas is also precious" from the 3 aspects.

Currently,since a single treatment standard of benign tumors of liver is not established,many serious out-comes due to the excessive treatment of benign tumors of liver still happen sometimes.We should pay attention to composing the guideline on the treatment for the different types of benign tumors of liver on the basis of the multidisciplinary cooperation and the randomized controlled trials,and achieving the goals of an unified standard and the standardized therapy,meanwhile,avoiding the pain and burden of excessive treatment on the patients.

This paper reported 65 cases of hepatectomy on patients with intrahepatic cholelithiasis, among which 62 were left lateral lobectomy, 2 left hemihepatectomy and 1, right hemihepatectomy. The incidence of postoperative complication was 21.5%: incision infection (8 cases), subphrenic abscess (3 cases), biliary fistula (1 case), and septicemia and duodenal fistula which caused the death of the patients (one each). The complications are related to the number of previous operations, the biliary infection and the improper drainage. Attention should be paid to the following aspects to prevent complications: (1) strict observation of indications for hepatectomy; (2) correct management of the raw surface; (3) adequate maintenance of bile drainage; (4) proper choice of drains.

The natural history of chronic HBV infection is diverse and variable, ranging from inactive carriers to progressive chronic hepatitis B ( CHB), cirrhosis and hepatocelluar carcinoma.It is estimated that 93 million people are chronically infected with HBV and 20 million cases suffering from chronic hepatitis B in China.Hepatocelluar carcinoma has been the second leading cause of death for male in China.Liver cirrhosis and HCC which have high mortality and morbidity have become the heavy burden for the limited medication resource of China.Here the current clinical applications and consensus progression based on antigen and nuclear acid detection were acknowledged.The reasonable application as well as appropriate clinical interpretation are emphasized indicating that laboratory medicine practitioners should be more actively involved in clinical diagnosis and treatment.More efforts and contributions should be made by the laboratory medicine practitioner for optimizing clinical management of HBV-related diseases in future.

Surgical-oncological pathology is one of the most important supporting discipline for hepatobiliary surgery.With rapid development in modern hepatobiliary surgery,the traditional model of morphological diagnosis can no longer meet the needs of oncological surgery.To improve the level of pathological diagnosis, better understand clinical concerns,update the mode of pathological diagnosis,introduce new technologies,expand the connotations of pathological diagnosis,provide a new indexing system for clinical treatment programs,and focus on interdisciplinary collaborative research are the most important issues in the development of surgical pathology for hepatobiliary tumors.

China is among the middle-high endemic regions of HBV infection.The pathological outcomes of chronic HBV infection have been shown to be greatly influenced by several important factors,including HBV genotype,sub-genotype and gene viability mutation.HBV genome mutation,on the one hand,could alter its replication and secretion and thus change viral pathogenicity.In addition,host immune microenvironment and host-virus interaction,disease progression and the effect of antiviral therapy could be adapted at the same time.The detection of HBV genotypes,genetic subtypes and the key hotspot mutation is helpful to clinical risk assessment and prognosis prediction of HBV-related end-stage liver diseases (cirrhosis and hepatocellular carcinoma),it is also helpful to auxiliary predict the liver diseases recurrence and metastasis after treatment.Thus persistent care should be taken on the HBV mutation and its clinical translation so as to provide solid evidences for the personalized,standardized and fine management of HBV-related liver diseases.

Early detection and treatment of hepatocellular carcinoma (HCC) is one of the most direct and effective ways to improve the long-term outcome of patients with HCC. The comparative study on clinicopathological characteristics of surgically resected micro HCC (≤1 cm), small HCC(≤3 cm), middle HCC (3-5 cm), and large HCC (>5 cm) showed that ≤3 cm small HCC had the features of DNA diploidy, well differentiation, relatively slow growth, encapsulation, rare long-distance metastatic foci and thrombosis, easy to be radically resected and long-term postoperative survival. It is suggested that HCC growing to about ≤3 cm is an important growth phase when the change of pathobiological characteristics of HCC from a relatively benign to a more malignant behavior would occur. This is also the important time to carry out radical treatment to get better results. Therefore,further research on the early diagnosis and treatment as well as the pathobiological features of small HCC ≤3 cm should be undertaken as one of the key clinical and pathological studies in the future.

Objective:To construct a THANK adenovirus vector and observe expression of THANK in SMMC-7721 cell line after THANK adenovirus infection. Methods: Human THANK cDNA was cloned into shuttle vector pAdTrack-CMV, and the resultant plasmid was linearized and subsequently cotransformed into E.coli BJ5183 with an adenoviral backbone plasmid pAdEasy-1.Recombinants were then selected and the linearized recombinant plasmid was transfected into 293 cell lines. Finally, THANK recombinant adenovirus production was observed by fluorescent microscope and confirmed by PCR and Western blot analysis. Further THANK adenovirus were used to infect SMMC-7721 cells with different MOI. The expression of THANK in SMMC-7721 cells was observed by fluorescent microscope and by PCR and Western blot analysis. Results: A human THANK recombinant adenovirus vector was constructed and infected SMMC-7721 cell line with high efficiency. The expression of THANK in SMMC-7721 cells was over 35 ng/ml 5 d after transfection. Conclusion: Adenovirus can induce stable expression of THANK in SMMC-7721 cells.

Activities of N-acetyl-?-glucosaminidase (NAG) in sera of normal subjects and patients with hepatocellular carcinoma (HCC) and other diseases were microquantitatively determined by spectrophotometry. The results showed that after the reaction for 4 h, activity of serum NAG in patients with HCC (397.10 ? 174.97 nmol/ml) was obviously higher than that in normal subjects (280.00 ? 63.83 nmol/ml). The elevation of serum NAG in HCC patients had no relationship with their serum a-fetoprotein. However, the increase of serum NAG activity in some patients with benign liver diseases was always accompanied by the abnormality in their liver functions. It is suggested that serum NAG has some referable values in the diagnosis of HCC.