Objective: Para-aortic lymph node dissection (PALND) is a widely used treatment that causes many complications. This study is to evaluate the efficacy and safety of nerve-sparing para-aortic lymph node dissection (NSPALND) by comparing it with conventional PALND in gynecological malignancies and to prove whether locating the superior hypogastric plexus (SHP) can help reveal the para-aortic nerves. Methods: This is a retrospective study of the patients who underwent para-aortic lymphadenectomy from January 2020 to December 2022 at Zhejiang Cancer Hospital. All of them were divided into NSPALND and PALND groups according to whether or not nervesparing was performed. The surgical, functional and oncological outcomes were evaluated. Results: There were 43 patients enrolled, of which, 20 patients underwent NSPALND and 23 patients underwent PALND. The para-aortic nerves were successfully revealed by locating the SHP in all 20 cases of NSPALND. The post-operative anal exhaust time in the NSPALND group was significantly shorter than that in the PALND group (2.5 vs. 4 days, p=0.006), and the incidence of acute intestinal obstruction in the NSPALND group was significantly lower than that in the PALND group (10% vs. 39%, p=0.029). There was no difference between the two groups in terms of catheterization duration, urinary retention, dysuria, as well as the number of lymph nodes removed and the para-aortic recurrence rate. Conclusion NSPALND can significantly reduce the rate of acute intestinal obstruction and improve post-operative intestinal function. Locating the SHP and using it as an anatomical landmark to reveal the para-aortic nerves is feasible. Its exact clinical value needs to be further studied.

Objective: Para-aortic lymph node dissection (PALND) is a widely used treatment that causes many complications. This study is to evaluate the efficacy and safety of nerve-sparing para-aortic lymph node dissection (NSPALND) by comparing it with conventional PALND in gynecological malignancies and to prove whether locating the superior hypogastric plexus (SHP) can help reveal the para-aortic nerves. Methods: This is a retrospective study of the patients who underwent para-aortic lymphadenectomy from January 2020 to December 2022 at Zhejiang Cancer Hospital. All of them were divided into NSPALND and PALND groups according to whether or not nervesparing was performed. The surgical, functional and oncological outcomes were evaluated. Results: There were 43 patients enrolled, of which, 20 patients underwent NSPALND and 23 patients underwent PALND. The para-aortic nerves were successfully revealed by locating the SHP in all 20 cases of NSPALND. The post-operative anal exhaust time in the NSPALND group was significantly shorter than that in the PALND group (2.5 vs. 4 days, p=0.006), and the incidence of acute intestinal obstruction in the NSPALND group was significantly lower than that in the PALND group (10% vs. 39%, p=0.029). There was no difference between the two groups in terms of catheterization duration, urinary retention, dysuria, as well as the number of lymph nodes removed and the para-aortic recurrence rate. Conclusion NSPALND can significantly reduce the rate of acute intestinal obstruction and improve post-operative intestinal function. Locating the SHP and using it as an anatomical landmark to reveal the para-aortic nerves is feasible. Its exact clinical value needs to be further studied.

Objective: Para-aortic lymph node dissection (PALND) is a widely used treatment that causes many complications. This study is to evaluate the efficacy and safety of nerve-sparing para-aortic lymph node dissection (NSPALND) by comparing it with conventional PALND in gynecological malignancies and to prove whether locating the superior hypogastric plexus (SHP) can help reveal the para-aortic nerves. Methods: This is a retrospective study of the patients who underwent para-aortic lymphadenectomy from January 2020 to December 2022 at Zhejiang Cancer Hospital. All of them were divided into NSPALND and PALND groups according to whether or not nervesparing was performed. The surgical, functional and oncological outcomes were evaluated. Results: There were 43 patients enrolled, of which, 20 patients underwent NSPALND and 23 patients underwent PALND. The para-aortic nerves were successfully revealed by locating the SHP in all 20 cases of NSPALND. The post-operative anal exhaust time in the NSPALND group was significantly shorter than that in the PALND group (2.5 vs. 4 days, p=0.006), and the incidence of acute intestinal obstruction in the NSPALND group was significantly lower than that in the PALND group (10% vs. 39%, p=0.029). There was no difference between the two groups in terms of catheterization duration, urinary retention, dysuria, as well as the number of lymph nodes removed and the para-aortic recurrence rate. Conclusion NSPALND can significantly reduce the rate of acute intestinal obstruction and improve post-operative intestinal function. Locating the SHP and using it as an anatomical landmark to reveal the para-aortic nerves is feasible. Its exact clinical value needs to be further studied.

Multiple myeloma(MM)remains an incurable disease,with most patients experiencing multiple relapses before ultimately progressing to refractory stage.Extramedullary infiltration is a common manifestation of relapse.However,distinguishing synchronous multifocal extramedullary infiltration from secondary malignancies poses significant diagnostic challenges.This study presents a case of relapsed refractory MM with multifocal extramedullary infiltration,diagnosed as coexistence of multiple myeloma extramedullary infiltration and pulmonary adenocarcinoma through multidisciplinary team(MDT)collaboration.Such coexistence is exceedingly rare in clinical practice and introduces substantial complexity in diagnosis and treatment planning.Through a comprehensive case report and literature review,this paper explores the diagnostic and therapeutic approaches to managing multifocal extramedullary infiltration coexisting with secondary malignancies in MM,highlighting the pivotal role of MDT in achieving precise diagnosis and optimizing patient outcomes.

Multiple myeloma(MM)remains an incurable disease,with most patients experiencing multiple relapses before ultimately progressing to refractory stage.Extramedullary infiltration is a common manifestation of relapse.However,distinguishing synchronous multifocal extramedullary infiltration from secondary malignancies poses significant diagnostic challenges.This study presents a case of relapsed refractory MM with multifocal extramedullary infiltration,diagnosed as coexistence of multiple myeloma extramedullary infiltration and pulmonary adenocarcinoma through multidisciplinary team(MDT)collaboration.Such coexistence is exceedingly rare in clinical practice and introduces substantial complexity in diagnosis and treatment planning.Through a comprehensive case report and literature review,this paper explores the diagnostic and therapeutic approaches to managing multifocal extramedullary infiltration coexisting with secondary malignancies in MM,highlighting the pivotal role of MDT in achieving precise diagnosis and optimizing patient outcomes.

Multiple myeloma is a malignant proliferative disease of plasma cells,and some patients may develop systemic amyloidosis.Cardiac amyloidosis is a common cause of death in these patients.Secondary adrenal insufficiency is caused by dysfunction of the hypothalamus and/or the pituitary gland,and multiple myeloma cases combined with secondary adrenal cortical dysfunction have been rarely reported in China.The patient,55-year-old,male,was admitted to the Emergency Department of Shenzhen Luohu People's Hospital on June 5,2018 due to"repeated chest tightness and fatigue for 7 months,and fainting for 1 hour".Later,he was transferred to Department of Hematology and was diagnosed as having multiple myeloma(λ light chain type)with systemic amyloidosis through bone marrow puncture and other examinations.The first course regimen of chemotherapy was bortezomib,cyclophosphamide,and dexamethasone.After the course,the patient was infected with a mixture of bacteria and fungi in the lung and had improvement after treatment.Then the regimen was adjusted to bortezomib and dexamethasone from the second course.After the fourth course,the patient achieved complete remission of multiple myeloma.After the fifth course,the patient experienced severe pulmonary-mixed infection again,which was improved after treatment.Thereafter,the patient presented with refractory hypotension,and decreased levels of cortisol and adrenocorticotropic hormone(ACTH),which was diagnosed as secondary adrenal cortical dysfunction.Hydrocortisone replacement therapy was administered.After 9 courses of chemotherapy,the patient received maintenance treatment with ixazomib.Multiple myeloma was evaluated as a stringent complete response.Cardiac amyloidosis was evaluated as a very good partial response,and secondary adrenal cortical dysfunction was treated with hydrocortisone maintenance therapy and with the cortisol level in the normal range.

Objective To analyze the expressions of tumor stem cell markers Lgr5 and CD44 in esophageal carcinoma and its clinical pathological significance.Methods A total of 108 cases of patients with esophageal cancer, 35 cases of stage Ⅱ, 40 cases of stage Ⅲ, 4 cases of stage Ⅳ. After tumor specimens were stained, the expressions of Lgr5 and CD44 in esophageal cancer tissue were detected and its relationship with the clinical features were analyzed.Results There were relations between expressions of Lgr5 and CD44 in esophageal cancer tissue and clinical staging, the later the stageing, the higher expression rate of Lgr5 and CD44, but there was no significant differece with Chi-square test. The Spearman correlation analysis showed there was no correlation between Lgr5 or CD44 and esophageal cancer condition. Conclusion CD44 and Lgr5 are highly expressed in esophageal cancer tissue, but the correlation between CD44 and Lgr5 expression and esophageal cancer condition is uncertain.

[ABSTRACT]OBJECTIVETo study the expressions of 34βE12, Galectin-3 and HBME-1 in thyroid nodules, and to explore its diagnostic value for papillary thyroid carcinoma (PTC).METHODSEn VisionTM immunohistochemical technique was used to detect the expression of 34βE12, Galectin-3 and HBME-1 in 352 thyroid lesions. The correlation between the expressions of the 3 protein markers and clinicopathological characteristics was evaluated. The receiver operating characteristic area under the curve (ROC-AUC) and their index for diagnosis evaluation were also calculated.RESULTSThe positive rates of 34βE12, Galectin-3 and HBME-1 in 246 PTC lesions were significantly higher than those in benign nodules (P<0.001). There was no relationship between the expression of the 3 protein markers and clinicopathological characteristics (eg. gender, age, numbers of lesions, tumor size, capsular invasion, lymph node metastasis, TNM staging). The ROC-AUC of 34βE12, Galectin-3 and HBME-1 for diagnosis of PTC was 0.936, 0.915 and 0.898 respectively. The sensitivity of 34βE12, Galectin-3 and HBME-1 for diagnosis of PTC was 94.3%, 95.5% and 91.1% respectively, while the specificity was 81.1%, 71.7% and 83.0% respectively, and the diagnostic accuracy rate was 90.3%, 88.4% and 88.6% respectively.CONCLUSION The expressions of 34βE12, Galectin-3 and HBME-1 are statistically different between PTC and benign lesions, but no associations are found with clinicopathological characteristics, indicating the three protein markers have important diagnostic value for PTC.

Objective To investigate the effects of underwater operation and subsea environment on the awareness of oceanauts,through recording the electroencephalogram(EEG) of the oceanauts at different time points and the subjective sense of stress during submerged operation and by quantitatively analyzing the changes in α-wave attenuation coefficient(AAC) and subjective sensation of fatigue with α-wave attenuation test(AAT).Methods Six "Jiaolong" oceanauts were involved in the experiment.EEGs of the oceanauts were recorded at 3 different time points,i.e.before submergence,at hour 1.5 and 2.5,and AAC was analyzed statistically.At the same time,the subjective sense of stress of the oceanauts was evaluated by using visual analogue scale (VAS).Results AAC(3.0 ± 1.2) of the oceanauts at hour 1.5 during submerged operation was increased to some extent,as compared with the control value (2.5 ± 1.5) before submergence,but without statistical significance(P ＞ 0.05).After 2.5 h submerged operation,the AAC (0.7 ± 0.2) was significantly decreased,as compared with those of the pre-submerged control value and the value detected at hour 1.5 (P ＜ 0.05),with statistical significance(P ＞0.05).The subjective sense of stress of the oceanauts after 1.5 h(1.3 ± 1.0)and 2.5 h (1.4 ± 1.1) submerged operation was significantly increased,as compared with the control value (0.5 ±0.7) before submergence,and statistical significance could be seen,when comparisons were made between them (P ＜ 0.05).Conclusions Continuous underwater operation for 2.5 hours could obviously decrease the awareness of the oceanauts in the manned submersible and at the same time increase the sense of stress,indicating that submerged operation had certain effects on the awareness of the oceanauts.

Objective To investigate the effects of underwater operation and subsea environment on the awareness of oceanauts,through recording the electroencephalogram(EEG) of the oceanauts at different time points and the subjective sense of stress during submerged operation and by quantitatively analyzing the changes in α-wave attenuation coefficient(AAC) and subjective sensation of fatigue with α-wave attenuation test(AAT).Methods Six "Jiaolong" oceanauts were involved in the experiment.EEGs of the oceanauts were recorded at 3 different time points,i.e.before submergence,at hour 1.5 and 2.5,and AAC was analyzed statistically.At the same time,the subjective sense of stress of the oceanauts was evaluated by using visual analogue scale (VAS).Results AAC(3.0 ± 1.2) of the oceanauts at hour 1.5 during submerged operation was increased to some extent,as compared with the control value (2.5 ± 1.5) before submergence,but without statistical significance(P ＞ 0.05).After 2.5 h submerged operation,the AAC (0.7 ± 0.2) was significantly decreased,as compared with those of the pre-submerged control value and the value detected at hour 1.5 (P ＜ 0.05),with statistical significance(P ＞0.05).The subjective sense of stress of the oceanauts after 1.5 h(1.3 ± 1.0)and 2.5 h (1.4 ± 1.1) submerged operation was significantly increased,as compared with the control value (0.5 ±0.7) before submergence,and statistical significance could be seen,when comparisons were made between them (P ＜ 0.05).Conclusions Continuous underwater operation for 2.5 hours could obviously decrease the awareness of the oceanauts in the manned submersible and at the same time increase the sense of stress,indicating that submerged operation had certain effects on the awareness of the oceanauts.