Objective To evaluate the effectiveness of pulmonary embolectomy by cathether for the treatment of acute pulmonary embolism. Methods 38 cases were diagnosed pulmonary embolism by pulmonary angiography, treated by thrombus fragmentation and suction by cathethers, and local fibrinolysis. The symptoms, PaO 2, PAPM and pulmonary arteries were observed after the procedure. Results 36 patients survived and showed clinical improvement with significant decrease in PaPm and increase in PaO 2( P

Objective To emphasize the importance of the early diagnosis and treatment of Lemierre syndrome caused by Arcanobacterium haemolyticum.Method A case of Lemierre syndrome caused by Arcanobacterium haemolyticum and three similar reported cases were reviewed.Results A man complained of fever with a sore throat,and examination found an enlarged left tonsil with prominent exudate,normal blood routine test and chest radiograph.Although the patient received the treatment of penicillin G and azithromycin,his condition worsened.Blood test showed white blood cell count 13.59 × 109/L (neutrophils 0.933),platelet count 7.4 × 109/L,TBil 54.3 mmol/L,DBil 28.3 mmol/L,AST 127 IU/L,ALT 82 IU/L,serum albumin 19.3 g/L with the development of the conditions.Blood cultures grew Arcanobacterium haemolyticum and the piperacillin-tazobactam was administered until fever was controlled.In addition,anticoagulation was administered when the thrombus was confirmed in the left internal jugular vein.Two follow-up clinic visits over the following 4 months were unremarkable.Besides three similar cases reported,four patients were male,and the ages ranged from 19 to 54 years.The chief complaints were sore throat and fever (4/4),with neck pain (4/4).Physical examinations found pharyngitis (2/4),exudate or abscess in the tonsillar crypt (2/4),maculopapular rashes (2/4).Laboratory results showed leukocytosis and thrombocytopaenia (4/4),acute cholestatic liver dysfunction (3/4),acute renal failure (2/4),acute respiratory failure (1/4).The first chest radiographs were normal at the onset,but chest radiography features included peripheral nodules and cavitation (3/4),focal or wedge-shaped lesions (1/4),pleural effusion (1/4) with the development of the conditions.Blood culture proved that there was only growth of Arcanobacterium haemolyticum (2/4),both Fusobacterium necrophorum and Arcanobacterium haemolyticum were found (2/4).Amoxicillin/clavulanic acid or piperacillin/tazobactam was administered (4/4).Neck CT proved internal jugular vein thrombosis (3/4) and anticoagulation was administered (3/4).All patients recovered and no one died.Conclusions The characters of Lemierre syndrome include primary oropharynx infection,septicaemia,septic or embolic phlebitis of jugular vein,and metastatic abscess.Early recognition and aggressive intravenous broad-spectrum antibiotics are critical to reduce mortality.

Peritoneal seeding is one of the three primary forms of cancer metastasis. Significant adverse events are observed in such cases due to inadequate understanding and knowledge of peritoneal cancer. Over the past 30 years, the establishment, improvement, and promotion of surgery-based integrated diagnostic and treatment strategy for peritoneal metastasis have led to an increase in basic, translational, and clinical research. This has resulted in the formation of a new discipline, peritoneal surface oncology. Based on an in-depth understanding of the biological basis, characteristics, and mechanisms of peritoneal metastasis, core clinical diagnostic and therapeutic techniques have been established and improved. From this, the "Ten Milestones" of high-level evidence-based treatment progress has been established. In 2012, the Chinese Journal of Clinical Oncology first launched the "Special Column on Peritoneal Metastasis," urging Chinese clinical oncologists to improve the diagnostic and therapeutic strategies for peritoneal carcinomatosis. Over the past 8 years, with full support from the China Anti-Cancer Association and from oncologists across the country, a comprehensive diagnostic and treatment system for peritoneal metastasis with Chinese characteristics has been established. The publication of the first monograph on this topic in Chinese and the formation of two expert consensuses have led to developments in discipline theory, research platform construction, clinical practice guidelines, and other aspects regarding peritoneal surface oncology in China. Once again, entrusted by the Chinese Journal of Clinical Oncology, we organized the special column "Highlights in Peritoneal Carcinomatosis" aiming to systematically summarize the latest achievements in the field of peritoneal cancer in China, promote the developments in clinical oncology, and provide an overview of the discipline of peritoneal surface oncology.

Objective:To evaluate the efficacy and safety of combined cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) with lobaplatin and docetaxel for treatment of synchronous peritoneal carcinomatosis (PC) from gastric cancer. Methods:Fifty patients with synchronous PC from gastric cancer were treated by 52 CRS+HIPEC procedures with 100 mg of lobaplatin and 120 mg of docetaxel in 12000 mL of normal saline at (43 ± 0.5)℃for 60 min. The primary and secondary endpoints were overall survival (OS) and perioperative safety profiles, respectively. Results:At a median follow-up of 22.5 months, the median OS rate was 14.3 (95%CI:7.6-21.0) months, and the 1-, 2-, and 3-year survival rates were 58%, 40%, and 32%, respectively. No perioperative deaths or serious adverse events occurred in 12 cases (23.1%). Multivariate analysis indicated that completeness of cytoreduction, nor-mality of perioperative tumor markers, and adjuvant chemotherapy of more than six cycles were independent predictors for improved survival. Conclusions:CRS+HIPEC with lobaplatin and docetaxel could improve the OS and ensure perioperative safety of patients with synchronous PC from gastric cancer.

Objective:To investigate whether the omental-adipose stromal cells (O-ASCs) exposing to gastric cancer-conditioned medi-um (CM) could be inducted to differentiate into carcinoma-associated fibroblasts (CAFs) and the effect of ERK signaling pathway in the process. Methods: We identified O-ASCs by examining their ability to differentiate osteogenic and adipogenic lineages and through flow cytometry. O-ASCs were co-cultured with MGC803 and SGC7901CM. The expression of CAFs markers (α-SMA, FSP-1, and vimentin) and paracrine factors (VEGFA, TGF-β1, FAP, and SDF-1) were evaluated by RT-PCR and Western blot. In vitro cultures of O-ASCs were divided into three groups:the control, SGC7901-CM, and SGC7901-CM+U0126 groups. Cells were collected after 12 h. West-ern blot was performed to evaluate the expression ofα-SMA, FSP-1, ERK, and p-ERK1/2. Results:The primary cells were O-ASCs. The expression levels of CAFs markers (α-SMA, FSP-1, and vimentin) and O-ASC paracrine factors (VEGFA, TGF-β1, FAP, and SDF-1) clearly in-creased (P<0.05). In comparison with the control, the expression of ERK in SGC7901-CM group did not change (P>0.05), while the ex-pression of p-ERK1/2,α-SMA, and FSP-1 significantly improved (P<0.05). Comparison of SGC 7901-CM+U0126 and SGC 7901-CM groups showed that the expression levels of ERK had no statistical difference (P>0.05), while the expression levels of p-ERK1/2,α-SMA, and FSP-1 decreased (P<0.05). Conclusion:O-ASCs participate in the peritoneal metastasis of gastric cancer through differentiation by CAF and paracrine factors. The ERK signaling pathway is important in the differentiation of O-ASCs towards CAFs.

Objective: To construct a predictive model to assess the completeness of cytoreduction (CC) and help guiding selection for cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy (CRS+HIPEC) in patients with gastric cancer with peritoneal metastasis (GCPM). Methods: GCPM patients treated with CRS+HIPEC at Beijing Shijitan Hospital were enrolled in this study. The major clinicopathologic and therapeutic characteristics were compared between those with complete CRS (CCRS) and incomplete CRS (ICRS). A nomogram based on a Logistic regression model was constructed for predicting the risk of ICRS. The nomogram was evaluated using area under receiver operating characteristic curve (AUC) and validated using the bootstrap resampling method. The probability of CCRS was predicted using the nomogram. Results: Among the included 125 patients with GCPM, 52 had CC0 cytoreduction and 73 had CC1-3 cytoreduction. The median overall survival (mOS) was 30.0 (95% CI: 16.8-43.3) months in the CC0 group, which was significantly longer than the mOS of 7.3 (95% CI: 5.8-8.8) months in the CC1-3 group (P<0.001). As there were no significant differences in OS among the CC1, CC2, and CC3 groups, CC0 patients were included in the CCRS group and CC1-3 patients were included in the ICRS group. Multivariate Logistic regression demonstrated that the time of peritoneal metastasis development (OR=14, 95% CI: 2.0-97.9, P= 0.008), preoperative tumor markers (TM) (OR=6.5, 95% CI: 2.1-37.8, P=0.037), and peritoneal cancer index (PCI) (OR=1.5, 95% CI: 1.3-1.8, P<0.001) were independent predictive factors for ICRS. The AUC of the nomogram was 0.985. Internal validation displayed good accuracy and consistency between the predictions and the actual observations. The cutoffs of PCI, with the probability of CCRS set at ≥ 50%, were ≤16, ≤12, ≤10, and ≤5 for synchronous GCPM with normal TM, synchronous GCPM with abnormal TM, metachronous GCPM with normal TM, and metachronous GCPM with abnormal TM, respectively. Conclusions: Complete CRS+HIPEC improves the survival of some patients with GCPM. A selection strategy based on PCI combined with the time of peritoneal metastasis development and TM may be a practical way for selecting patients with GCPM eligible for CCRS.

Objective To evaluate double catheterization of cannula persistent irrigation and negative pressure system to treat gastrointestinocutaneous fistula (GIF) after cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy for peritoneal cancer.Methods A self-made double catheterization of cannula persistent bathe and negative pressure system was implanted into the site of fistula,to ensure efficient drainage.The patient was treated with anti-sepsis,nutrition support and other conservative measures.Results GIFs occurred in 13 patients.The negative pressure drainage system was successfully implanted into the fistula site to keep an efficient drainage.By this conservative treatment fistula healed in 8 patients after 50 days (range 12 to 84 days).In other three patients fistula output significantly reduced and general conditions greatly improved.The mortality rate was 15％ (2/13).Conclusion The double catheterization of cannula persistent bathe and negative pressure aspiration system is a simple and efficient method to treat GIF.

OBJECTIVETo study thrombosis and its significance after acute experimental pulmonary thromboembolism.

METHODSThe acute pulmonary thromboembolism (PTE) model of rabbits was established by intravenous injection of autologous blood clots (0.04 g/kg) which were stabilized in temperature-controlled (70 degrees C) distilled water for 10 min. The process of thrombosis was observed grossly and microscopically. The Quick's method was used to examine the coagulability of blood and radioimmunoassay was employed to measure the level of plasma thromboxane A(2) and endothelin.

RESULTSThrombotic propensity was observed at 1 h, fresh thrombus started to form and the blood coagulation system was activated at 24 h following clots infusion. Emboli were completely or partly dissolved at 5 d and appeared to organize at both 10 d and 14 d after clots were infused. Venous plasma thromboxane A(2) concentration began to increase at 5 min (2489.59 +/- 714.68 ng/L) and reached its maximum at 15 min (2545.46 +/- 590.58 ng/L) then declined at 60 min after clot infusion (P < 0.001, respectively, vs 626.59 +/- 510.02 ng/L of pre-clot). The level of endothelin in both arterial and venous blood increased at 5 d post-clot infusion (840.74 +/- 154.19 ng/L, 230.35 +/- 52.39 ng/L, respectively) compared to the one before infusion (602.66 +/- 453.26 ng/L, 148.01 +/- 53.28 ng/L, respectively, P < 0.05).

CONCLUSIONSThrombosis occurs after autologous-blood-clot-induced PTE. The interactions between thrombus formation, fibrinolysis and organization determines the consequences of emboli. Abnormalities of endothelin metabolism and the increment of thromboxane A(2) may play an important role in PTE.

Animals ; Blood Coagulation ; Endothelins ; blood ; Lung ; pathology ; Pulmonary Embolism ; blood ; pathology ; Rabbits ; Thrombosis ; pathology ; Thromboxane B2 ; blood

Objective:To evaluate the clinical efficacy and safety of cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy (CRS+HIPEC) for patients with advanced ovarian cancer as the first-line surgical treatment.Methods:The ovarian cancer patients with completed clinical data diagnosed as stage Ⅲ C-Ⅳ according to Federation International of Gynecology and Obstetrics (FIGO) who underwent CRS+HIPEC as the first-line treatment from December 2007 to November 2019 in Beijing Shijitan Hospital were retrospectively analyzed. Survival status was analyzed by using Kaplan-Meier method, and prognostic factors were analyzed by using Cox multivariate regression model. The primary endpoints were median overall survival (mOS) time and median progress-free survival (mPFS) time, and the secondary endpoint was safety in perioperative period. Results:Of 100 patients with advanced ovarian cancer, the median follow-up time was 18.4 months, and 75 (75.0%) patients were alive and 25 (25.0%) patients died, of which the mOS time was 87.6 months (95% CI 72.1-103.1 months), and 1-, 2-, 3-, 4- and 5-year survival rate was 94.1%, 77.2%, 68.2%,64.2% and 64.2%, respectively. Univariate analysis showed that the patients with age≤58 years old ( P = 0.023), Karnofsky≥80 scores ( P = 0.026), ascites ≤1 000 ml ( P = 0.041), peritoneal carcinomatosis index (PCI) score <19 ( P = 0.044) and completeness of cytoreduction (CC) score 0-1 ( P = 0.001) had better prognosis. Multivariate analysis showed that CC score 0-1 was independent prognostic factor, the mortality risk of resectable patients with CC score 2-3 was 3.2 times higher than that in patients with CC score 0-1 ( HR = 3.2, 95% CI 1.4-7.6, P = 0.008), and mPFS time was 23.3 months (95% CI 0-50.7 months) for patients with CC score 0-1. Grade Ⅲ-Ⅳ adverse event rate during perioperative period and mortality rate was 4.0% (4/100) and 2.0% (2/100), respectively. Conclusion:CRS+HIPEC could improve the survival of advanced ovarian cancer patients with good safety.

Objective:For cancer patients who underwent extensive surgery, drastic release of myoglobin (Mb) after surgery can cause hypermyoglobinemia and related problems. This retrospective cohort study aims to summarize our experience and outcomes of 60 pa-tients with hypermyoglobinemia after cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC), to investi-gate the changes in postoperative Mb levels, and to explore the clinical value of Mb. Methods:This retrospective study covered 60 pa-tients with peritoneal carcinomatosis who were treated with CRS and HIPEC. All patients developed hypermyoglobinemia after opera-tion. Immediately after CRS and HIPEC, the patients were placed in a comprehensive treatment regimen consisting of hemodynamic stabilization therapies, nutritional support, anti-sepsis therapies, and psycho-physical therapies. For the treatment of hypermyoglo-binemia, intravenous injection of sodium bicarbonate solution according to the Mb level was given to the patients. Moreover, the pre-and post-operative concentrations of Mb, blood urea nitrogen (BUN), and creatinine (Cr) were evaluated. Results:Serum Mb levels af-ter CRS and HIPEC were significantly elevated and peaked on the surgery day. Prompt treatment with intravenous infusion of sodium bicarbonate solution could help decrease the serum Mb levels and alleviate potential damage. Serum Mb levels returned to normal in approximately 3-4 days. The serum BUN levels increased after operation and peaked on the fourth postoperative day. On the other hand, serum Cr levels increased 2 days after operation and began to decrease on the third postoperative day. One patient developed renal failure and sepsis and died on postoperative day 26. The other patients recovered from the surgery without major adverse events. Conclusion:Hypermyoglobinemia is a common lab abnormality after CRS and HIPEC, and serum Mb levels could be an early and sensitive indicator for dramatic disturbances in the internal milieu after surgery. Adequate treatment with sodium bicarbonate could accelerate the reduction in serum Mb levels and reduce the risk for major organ damages.