SUMMARY Peripheral T cell lymphomas-unspecified(PTCL-U) is an uncommon malignant tumor, accounting for 5%-7% of non-Hodgkin’s lymphoma. Clinical feature of a case of PTCL-U was investigated and the optimal treatment protocol was proposed. The clinical presentation of this case was progressing limbs weakness with sudden paralysis. Multiple superficial lymph nodes swelling and decreased sensation in all modalities below T10 level were found in physical examination. Bilateral leg paralysis (Grade 0/5) with high muscle tension, overactive knee reflex, bilateral Babinski sign (+) were present. Magnetic resonance imaging(MRI) showed the mass, which was around spinal cord located in T6-T8 vertebra canal, with intense enhancement after the administration of gadolinium diethylenetriamine penta-acetic acid. Abnormal signal in multiple centrums and accessories could also be found in MRI scan. Initial diagnosis was lymphoma, multiple systems involved. Laminectomy and epidural tumor resection were performed immediately. The dural sac was narrowed obviously by surrounding tumor. The result of pathological examination was PTCL-U. After operation, the level of pain sensation was descent, and touch sensation recovered. The patient received chemotherapy and his muscle strength was partly recovered in 4 months. Early diagnosis of peripheral T cell lymphomas-unspecified was difficult and easily misdiagnosed with poor prognosis. A review of literature showed central nervous system lesions occurred in advanced stage. However, the report of representation of intraspinal mass as initial symptom like the case was rare. For acute paraplegia, laminectomy and tumor resection should be performed as soon as possible. Regular radiotherapy and chemotherapy should be considered after operation. However, the value of local chemotherapy need to be further investigated.

(0.05)).There had significant difference((25.47)?(8.27) vs(32.40)?(5.86)) between them at the seventh day(P

Objective To investigate the place reaction of support drainage tube in cholecystojejunostomy and its pathological changes.Methods Eight pigs were randomized into 2 groups.The tube-placing cholecystojeunostomy(n=2)or choledochocholedochostomy(n=2)and non-tube-placing cholecystojejunostomy(n=2)or choledochocholedochostomy(n=2)were performed respectively.All the 8 pigs were sarcrificed 3 months after the operation for pathological examination.Results Gross anatomy catheter group showed anastomotic inflammatory hyperplasia, wall hardening hyperplasia,luminal narrow contracture and stone formation.Microscopic biopsy showed bile duct mucosa in interstitial lymphocytes, plasma cells and other chronic inflammatory cell infiltration, a large number of fibrous tissue hyperplasia.However, these features were not found in pigs without placing the tube.Conclusion The tube can not prevent the stenosis.It might promote the formation of stricture since it can stimulate inflammatory hyperplasia and tissue hardening.

Objective To discuss the diagnosis and treatment of normotensive pheochromocyto-ma. Methods The clinical data of 22 patients with normotensive pheochromocytoma were reviewed. Inclusion criteria for normotensive pheochromocytoma were no previous history of hypertension and episode of symptoms suggesting high blood pressure. The blood pressure on admission was 90-130/ 60-90 mm Hg with an average of 113/72 mm Hg. Seven patients were found adrenal mass by routine ultrasonic examination. Twelve patients presented with superior abdominal or flank pain. Four pa-tients were present with fatigue, and 2 patients had fever. Headache and palpitation were found in 1 patient. Most of patients were present with large and round mass with low density area in the center of the tumor by uhrosonography and CT. Four patients had elevated level of plasma epinephrine and nor-epinephrine. 24 hours urine CA and VMA were elevated in 5 and 4 patients respectively. Seven pa-tients were prepared with infusion preoperatively to expand intravascular volume, and 2 patients were given prazosin 1.5 mg/d for 5 to 7 days. Results During the operation, seventeen patients had ele-vated blood pressure and 5 patients had no changed. One of seven patients with preoperative prepara-tion had obvious hypertension during operation, and 11 of 15 patients without preoperative preparation had obvious hypertension. The tumors were removed successfully in 21 patients. All the patients were diagnosed pheochromocytoma pathologically. Twenty-one patients had normal blood pressure with no recurrence during the follow-up from 1 month to 7 years. Conclusions The patients with normotensive pheochromocytomas may have lower catecholamine in their plasma and urine. The application of α-blockers and the expanding intravascular volume before operation could be important for the patients safe.

Objective To study the curative efficacy and safety of single-unit umbilical cord blood transplantation (sUCBT) for malignant hematologic diseases,which is provided by China's public cord blood bank.Methods We retrospectively analyzed 409 cases of malignant hematologic diseases who accepted myeloablative single-unit unrelated donor UCBT without ATG at our center between May 2008 and December 2016.A comparative analysis was made on the total nuclear cells (TNC) of the umbilical cord blood before freezing and after thawing,the cells of CD34+,the recovery rate of cells and the clinical effect of UCBT.Result 409 units of umbilical cord blood used in UCBT respectively came from eight China's public cord blood banks.The average TNC of 409 units of umbilical cord blood before freezing and after the tubular recovery were respectively 18.5 × 108 and 16.34 × 108 (p =0.000).The average recovery rate of the tubular recovery was 88.5％,and there was significant difference among cord blood banks (P =0.000).The average TNC of umbilical cord blood before freezing and transfusion were respectively 18.5 × 108 and 15.86 × 108 (p =0.000).The average recovery rate of umbilical cord blood transfusion was 85.9％,with the difference being significant among cord blood banks (P =0.000).The average number of CD34+ cells before freezing and after the tubular recovery was 11.18 × 106and 8.68 × 106 (p =0.000).The average recovery rate of CD34+ cells after the tubular recovery was 80.75 ％,with the difference being significant among the cord blood banks (P =0.000).At 42nd day after UCBT,the cumulative incidence of neutrophil engraftment was 95.4％,and the median time of the engraftment was 17 days (11-38 days).The cumulative incidence of platelet engraftment at 120th day was 84.6％,and the median time of the engraftment was 36 days (14-93 days).The cumulative incidence of erythrocyte engraftment at 60th day was 92％,and the median time of engraftment was 22 days (9d-60 days).After the umbilical cord blood provided by each bank was used in UCBT,it got the difference in cumulative incidence of engraftment.The P values for cumulative incidence of neutrophil,platelet and erythrocyte engraftment were respectively 0.004,0.01 and 0.000 2,with the differences being statistically significant.At 100th day after UCBT,the cumulative incidence of Ⅱ-Ⅳ and Ⅲ-Ⅳ degrees of acute graft-versus-host disease (aGVHD) was respectively 28.63％ and 15.7％.After umbilical cord blood provided by each bank was used in UCBT,it got the difference in cumulative incidence of aGVHD.There was no significant difference between Ⅱ-Ⅳ and Ⅲ-Ⅳ degrees (P =0.809 and 0.68 respectively).At 3rd year after UCBT,the cumulative incidence of relapse was 15.89％.After umbilical cord blood provided by each bank was used in UCBT,there was no significant difference in the cumulative incidence of relapse (P =0.898).At 3rd year after UCBT,the overall survival (OS) rate and disease free survival (DFS) rate were respectively 66.7％ and 59％.After umbilical cord blood provided by each bank was used in UCBT,it got the difference in OS and DFS.There was no significant difference in OS and DFS (P =0.566 and 0.703 respectively).At 3rd year after sUCBT,the rate of graft-versus-host diseases/relapse-free survival (GRFS) was 54.3％.After umbilical cord blood provided by each bank was used in UCBT,there was no significant difference in the rate of GRFS (P =0.449).Conclusion The umbilical cord blood provided by China's public cord blood bank was used in UCBT.It has a high safety and good efficacy in treating malignant hematologic diseases.But it needs to set up the standardized and normalized quality-control system of umbilical cord blood for China's public cord blood bank.

Hepatocellular carcinoma (HCC) is one of the most common malignant tumors in China. Surgery is the most important way to treat HCC currently. The high recurrence rate after hepatectomy is the most important reason to affect its prognosis, and it is also the key clinical problem to be solved. According to the recurrence time, the recurrence can be divided into early recurrence and late recurrence. The prognosis of patients with early recurrence is worse than that of patients with late recurrence. Therefore, it is very important for surgical decision-making to identify the two kinds of recurrence. This article reviews the research progress of early recurrence cut-off time of hepatocellular carcinoma after radical hepatectomy.

Lymphoepithelioma-like hepatic carcinoma (LELC) is a rare distinctive variant of liver cancer with unique epidemiological and pathological characteristics, characterized by dense lymphocyte infiltration.It can be divided into lymphoepithelioma-like hepatocellular carcinoma (LEL-HCC) and lymphoepithelioma-like cholangiocarcinoma (LEL-CC). The diagnosis is mainly based on pathology, and the treatment is mainly surgery. The prognosis of LELC is good, which may be related to a large number of lymphocyte infiltration. The data of LELC is very limited, only a few case reports and small retrospective studies, which needs further exploration and research. Up to now, 67 cases of LEL-HCC and 34 cases of LEL-CC have been reported. The purpose of this review is to provide a comprehensive overview of the current research situation on LELC in terms of epidemiology, clinical treatment, pathology and research prospects.

Objective:To investigate the effect of preoperative radiotherapy on postoperative recurrence in central hepatocellular carcinoma patients treated by hepatectomy.Methods:A retrospective cohort study was conducted. Clinicopathological data of 142 patients with central hepatocellular carcinoma who underwent surgical treatment at the Cancer Hospital of Chinese Academy of Medical Sciences and Peking Union Medical College from January 2016 to January 2019 were retrospectively collected. According to whether they received preoperative radiotherapy or not, the patients were divided into preoperative radiotherapy group (30 cases) and surgery-only group (112 cases). The main observation indexes were recurrence-free survival (RFS), intraoperative bleeding amount, operation time and the occurrence of postoperative complications. Kaplan-Meier method was used for survival analysis, and log-rank test was used for intergroup comparisons; the differences between the two groups for each factor were evaluated by standardized mean difference (SMD); Cox proportional hazards model was used to analyze the influencing factors of RFS in central hepatocellular carcinoma patients with hepatectomy. Propensity score matching (PSM), regression model-adjusted propensity score (CAPS) and inverse probability of treatment weighting (IPTW) methods were used to investigate the relationship between exposure factors and confounding variables and RFS. Sensitivity analysis was performed using E-value to assess the potential impact of unmeasured confounders on outcomes.Results:Men comprised 96.7% (29/30) and 87.5% (98/112) of the preoperative radiotherapy and surgery-only groups, with ages of (55±10) years old and (54±12) years old, respectively. Before matching by the PSM method, there were differences in gender, proportion of patients with hepatitis C, alanine aminotransferase, serum albumin, alpha-fetoprotein, satellite nodules by postoperative pathology, and number of tumors between the two groups (all SMD > 0.1). A total of 26 pairs of patients were successfully matched, and there was no difference in baseline characteristics between the preoperative radiotherapy group and the surgery-only group after matching (all SMD < 0.1). Univariate Cox regression analysis showed that preoperative radiotherapy, number of tumors, maximum diameter of tumor, and satellite nodules by postoperative pathology were the influencing factors of RFS (all P < 0.05); multivariate Cox regression analysis showed that preoperative radiotherapy was an independent protective factor of RFS in central hepatocellular carcinoma patients with hepatectomy ( HR = 0.55, 95% CI: 0.31-0.97, P = 0.038), and maximum diameter of tumor ( HR = 1.08, 95% CI: 1.02-1.15, P = 0.005) and satellite nodules by postoperative pathology ( HR = 1.97, 95% CI: 1.21-3.19, P = 0.006) were independent risk factors of RFS. Preoperative radiotherapy was associated with superior RFS in patients with central hepatocellular carcinoma (PSM, HR = 0.41, 95% CI: 0.20-0.86, P = 0.018; CAPS, HR = 0.42, 95% CI: 0.20-0.87, P = 0.019; IPTW, HR = 0.41, 95% CI: 0.22-0.76, P = 0.005). Before matching, the 1-, 3-, and 5-year postoperative RFS rates in the preoperative radiotherapy group were 77%, 56% and 45%, respectively, and the surgery-only group were 48%, 32% and 28%, respectively. RFS in the preoperative radiotherapy group was superior to that in the surgery-only group before and after matching ( χ2 = 5.65, P = 0.017; χ2 = 6.00, P = 0.014). The E-value for unmeasured confounders altering the conclusions was 2.39, suggesting reliable and stable results. After matching, intraoperative bleeding [ M ( Q1, Q3)] for patients in the preoperative radiotherapy group and the surgery-only group was 300 ml (125 ml, 600 ml) and 400 ml (200 ml, 600 ml), respectively ( U = 0.51, P = 0.611), and the proportions of patients with the operation time >180 min were 92.3% (24/26) and 84.6% (22/ 26), respectively ( χ2 = 0.75, P = 0.385), and the rates of mild postoperative complications were 100.0% (26/26) and 92.3% (24/26), respectively ( χ2 = 2.08, P = 0.149), the differences were not statistically significant. Conclusions:Preoperative radiotherapy for hepatectomy in patients with central hepatocellular carcinoma is safe and effective, and has the advantage of reducing postoperative recurrence.

Objective:To investigate the long-term outcome of centrally located hepatocellular carcinoma with microvascular invasion(MVI)after radical resection.Methods:A retrospective cohort study was used to collect and analyze the clinical and pathological data of 81 patients with centrally located HCC who underwent surgery in the Cancer Hospital Chinese Academy of Medical Sciences from January 2016 to January 2018. According to the classification of MVI, patients were divided into 41 low-level group (MVI M1) and 40 high-level group (MVI M2). The 1, 3, 5-year OS and relapse free survival were calculated in all patients. The main outcomes were overall survival (OS), disease-free survival (DFS) and postoperative complications. OS and DFS of patients was estimated using Kaplan-Meier method and the difference between groups was assessed using Log-rank test. COX proportional-hazards regression models were used to estimate the association between exposure factors and prognosis. The measurement data of normal distribution were expressed by mean±standard deviation ( ± s), and t-test was used for comparison between the two groups. Measurement data with non-normal distribution were represented by M ( Q1, Q3), and rank sum test was used for comparison between the two groups.Chi-square test was used for comparison between the two groups of count data. Results:The 1-, 3-, 5-year OS and relapse free survival were 88%, 76%, 73%, and 57%, 42%, 27% for all 81 centrally located HCC patients, respectively. The DFS and OS of the MVI M1 group were 26(11, 39) months and 36(25, 53) months, respectively, and the MVI M2 group were 9(4, 29) months and 22(10, 45)months, respectively, and the difference was statistically significant ( P<0.05). In survival analysis, OS and DFS was significantly different in MVI M1 group compared with that in MVI M2 group ( HR=4.69, 95% CI: 1.539-14.286, P=0.0027; HR=1.92, 95% CI: 1.111-3.333, P=0.016). The incidence of postoperative mild complications in the MVI M1 group and the MVI M2 group was 95.1% and 90.0%, respectively. There was no significant difference between the two groups ( P=0.379). Cox analysis showed that MVI M2 was the independent prognostic factors for centrally located HCC in OS and DFS ( P<0.05). Conclusion:Surgical treatment for centrally located HCC with MVI is safe and effective, and MVI classification is an independent risk factor for its prognosis.

Objective:To explore the clinical effect of laparoscopic anatomical hepatic segment Ⅷ (S8) resection.Methods:Of 16 patients with liver cancer who underwent laparoscopic anatomical hepatic S8 resection at the National Cancer Center from October 2020 to October 2022 were were enrolled, including 13 males and 3 females, aged (59.1±10.9) years. The operation time, intraoperative blood loss, occurrence of intraoperative blood transfusion, and postoperative complications were retrospectively analyzed. Recurrence and survival were followed up by outpatient and telephone reviews.Results:Laparoscopic anatomical hepatic S8 resection was successfully performed in 16 patients without conversion to laparotomy. Among them, 10 patients underwent the intraoperative ultrasound guided hepatic parenchymal approach, and 6 underwent laparoscopic Glissonean pedicle puncture for the positive staining of S8 using indocyanine green. The operation time was (274.8±82.8) min, and the intraoperative blood loss was [ M( Q1, Q3)] 100.0 (50.0, 200.0) ml. There were no intraoperative blood transfusion or postoperative complication. The drainage tube was successfully removed and the patients were discharged 5 to 7 days after surgery. The patients were followed up for 5 to 24 months and all survived. Two patients had tumor recurrence. Conclusion:Laparoscopic anatomical S8 resection is safe and feasible.