1.Recent Progress and Future Directions of Transcranial Electrical Stimulation for Analgesia
Yi QIU ; Wei-Wei MA ; Hui-Juan ZHANG ; Yi-Heng TU
Progress in Biochemistry and Biophysics 2024;51(5):1119-1133
Transcranial electrical stimulation (tES) is a non-invasive neural modulation technique known for its high safety, patient compliance, and portability. It holds promise as a potential non-pharmacological method for analgesia. However, challenges persist in utilizing tES for pain management, including inconsistent research findings and limited understanding of its analgesic mechanisms. Therefore, by summarizing the advances in the analgesic researches employing the 3 primary tES techniques, transcranial direct current stimulation (tDCS), transcranial alternating current stimulation (tACS), and transcranial random noise stimulation (tRNS), we reviewed the analgesic effects on both acute and chronic pain, as well as the neural mechanisms underlying the analgesic effect of each technique. Accumulating evidence suggests that the analgesic effects of tDCS are significant, but studies on analgesic effects of tACS and tRNS remain limited. And the exact mechanisms of pain relief through tES turned out to be not yet well established. Furthermore, we systematically discussed the limitations of analgesia-related studies employing tES techniques across various aspects, involving research design, stimulation protocol formulation, neural response observation, analgesic effect assessment, and safety considerations. To address these limitations and advance clinical translation, we emphasized utilizing promising stimulation techniques and offered practical suggestions for future research endeavors. Specifically, employing numerical simulation of electric field guided by magnetic resonance imaging (MRI) would reduce variability of outcomes due to individual differences in head anatomy. For this purpose, it is advisable to establish standardized head models based on MRI data from the Chinese populations and validate simulated electric field results in tES research to diminish confounding factors concerning anatomy. Meanwhile, novel techniques like multi-site brain stimulation and interferential stimulation (IFS) could broaden the range of stimulation sites in both scope and depth. Multi-site brain stimulation facilitates modulation of entire neural networks, enabling more sophisticated investigations into the complexity of pain. IFS can reach deep brain tissues without invasive surgical procedures, achieving more comprehensive modulation. Regarding neural response observations, establishing a tES-neuroimaging synchronized platform would enable revealing its mechanisms and personalizing protocols based on inter-subject neural response variability detected through recordings. By integrating tES with various neuroimaging techniques, such as functional MRI, electroencephalography (EEG) and magnetoencephalography, into one unified platform, researchers could examine brain activities in baseline before stimulation, dynamic changes in brain activities during stimulation, and sustained brain responses after stimulation. Additionally, collecting finer-grained data on participant characteristics and pain intensity would enhance the sensitivity of future studies. In designing clinical trials to evaluate chronic pain treatments and reporting the results, adopting the six core outcome domain measures recommended by the Initiative on Methods, Measurement, and Pain Assessment in Clinical Trials (IMMPACT) could prove beneficial. Lastly, safety considerations can never be overemphasized in future tES studies especially when combining tES with MRI and EEG techniques. These efforts may help to broaden the research scope, reconcile inconsistencies in findings and elucidate the analgesic mechanisms of tES, thus facilitating the development of pragmatic pain management strategies such as combination therapies and home therapies. Ultimately, these suggestions will maximize the clinical application value of tES in pain treatment to achieve pain relief for patients.
2.Electroacupuncture inhibiting LPS-induced chronic neuroinflammation by regulating the cortical NF-κB/NOD-like receptor protein 3 signaling pathway
Li-Juan WANG ; Ce GAO ; Zhi-Hong ZHAO ; Zhen HAI ; Wen-Hui LI ; Qiu-Qin HAN
Acta Anatomica Sinica 2024;55(5):547-555
Objective To observe the effect of electric stimulation on nuclear factor-κB(NF-κB)/NOD-like receptor protein 3(NLRP3)signaling pathway and microglial cell morphology in mice with lipopolysaccharide(LPS)induced chronic neuroinflammation,and to explore the protective mechanism of electric stimulation on brain of mice.Methods C57BL/6 mice were randomly divided into blank control group(n=8),model group(n=12),sham electroacupuncture group(n=6)and electroacupuncture group(n=6).Except blank control group,mice in other groups were injected intraperitoneally with LPS(0.25 mg/kg)for 7 consecutive days.On the 8th day,mice in the sham electroacupuncture group and electroacupuncture group were treated with acupuncture or Zusanli electroacupuncture for 7 consecutive days.The mice were weighed before the experiment,on the 7th and 14th days.On the 13th day,the elevated cross maze test was performed on the mice.The open field test was performed on the 14th day.After the experiment,immunofluorescence assay was used to determine the expression of microglial ionized calcium binding adaptor molecule-1(Iba-1)in prefrontal cortex region.The mRNA expression of NF-κB,inducible nitric oxide synthase(iNOS),tumor necrosis factor-α(TNF-α),Caspase-1 and interleukin(IL)-18 were detected by Real-time PCR.The protein expression levels of NF-κB,iNOS,NLRP3,apoptosis-associated speck-like protein containing a CARD(ASC),Caspase-1,IL-1βand IL-18 were detected by Western blotting.Results Weight change,On the 7th day,compared with the control group,the body weight of mice in model group,sham electroacupuncture group and electroacupuncture group decreased(P<0.0001),respectively;On the 14th day,compared with the control group,the weight of mice in the model group decreased(P<0.0001);Compared with the sham electroacupuncture group,the body weight of mice in the electroacupuncture group increased(P<0.05).Elevated cross maze experiment,compared with the control group,the total distance and open arm retention time of mice in model group decreased,while the closed arm retention time increased(P<0.05).The open field experiment showed that compared with the control group,the model group mice showed a decrease in total distance traveled,slower movement speed,and fewer entries into the central area(P<0.001);Compared with the model group,the electroacupuncture group showed an increase in all three indicators(P<0.01);Compared with the sham electroacupuncture group,the total distance and motion speed of mice in electroacupuncture group both increased(P<0.05).Immunofluorescence assay,compared with the control group,the relative fluorescence of Iba-1 in prefrontal cortex area of mice in model group increased(P<0.05).Compared with the model and sham electroacupuncture group,the relative fluorescence of Iba-1 in prefrontal cortex area of mice in electroacupuncture group decreased(P<0.05).Real-time PCR showed that compared with the control group,mRNA expressions of NF-κB,iNOS,TNF-α,Caspase-1 and IL-18 in the model group increased(P<0.05);Compared with the model group,mRNA expressions of NF-κB,iNOS,TNF-α,Caspase-1 and IL-18 in electroacupuncture group decreased(P<0.05).Western blotting indicated that compared with the control group,the protein expressions of NF-κB,iNOS,Caspase-1,IL-1β and IL-18 in model group increased(P<0.05);Compared with model group,the protein expressions of NF-κB,iNOS,NLRP3,ASC,Caspase-1,IL-1β and IL-18 in electroacupuncture group decreased(P<0.05);Compared with the sham electroacupuncture group,IL-18 protein in electroacupuncture group decreased(P<0.05).Conclusion Electroacupuncture can improve the behavioral performance of mice and inhibit the activation of microglia in the cortical region of mice,which may play an anti-inflammatory and protective role by regulating NF-κB/NLRP3 pathway.
3.Primary Extranodal Diffuse Large B-Cell Lymphoma in the Rituximab Era:a Single-Center Retrospective Analysis
Lan YANG ; Li-Xia CAO ; Hui-Juan REN ; Yan-Qiu HAN
Journal of Experimental Hematology 2024;32(4):1121-1128
Objective:To investigate the clinical features and prognostic factors of patients with primary extranodal diffuse large B-cell lymphoma(DLBCL)in the rituximab era.Methods:The continuous data of newly diagnosed DLBCL patients with complete case data and first-line treated with rituximab,cyclophosphamide,epirubicin,vincristine,prednisone(R-CHOP)or R-CHOP treatment admitted to the Affiliated Hospital of Inner Mongolia Medical University from January 2013 to November 2023 were retrospectively analyzed.The clinical and molecular immunological features and prognosis of extranodal DLBCL were analyzed,Logistics regression model was used to analyzed the influencing factors of patients prognosis.Results:A total of 237 patients were enrolled,of which 54.4%(129 cases)were primary extranodal sources of DLBCL,and the most common extranodal sites were as follows:stomach(19.4%),colon(14.7%),tonsils(12.4%),skin/muscle(9.3%),central(7.7%),nasal/nasopharynx(6.2%),bone marrow(5.4%),testes(4.7%).The 3-year PFS and OS of DLBCL patients with extranodal involvement of bone marrow,central,liver,gastrointestinal or pulmonary origin were significantly lower than those of other patients with extranodal DLBCL of non-special site origin,and the difference was statistically significant(PFS:65.2%vs 76.7%,P=0.008;OS:82.6%vs 88.3%,P=0.04).Multivariate analysis showed that the prognostic factors affecting OS included NCCN-IPI score>3(OR:0.142,95%CI:0.041-0.495,P=0.002),non-germinal center source(OR:2.675,95%CI:1.069-6.694,P=0.036),and DEL patients(OR:0.327,95%CI:0.129-0.830,P=0.019).An NCCN-IPI score>3 was the only independent adverse prognostic factor for PFS(OR:0.235,95%CI:0.116-0.474,P<0.001).Conclusion:Patients with primary extranodal source DLBCL are more common in gastrointestinal involvement,and the overall prognosis is worse than that of patients with lymph node origin.NCCN-IPI score is an important independent adverse prognostic factor for predicting overall survival and progression-free survival in patients with primary extranodal diffuse large B-cell lymphoma.
4.Halving Time of BCR-ABL Transcripts as a Precise Predictor for Deep Molecular Response in Patients with Chronic Myeloid Leu-kemia Treated with TKI
Lan YANG ; Li-Xia CAO ; Hui-Juan REN ; Yan-Qiu HAN
Journal of Experimental Hematology 2024;32(5):1349-1355
Objective:To investigate the early predictive value of halving time(HT)of BCR-ABLIS for deep molecular response(DMR)in patients with chronic myeloid leukemia(CML)treated with tyrosine kinase inhibitor(TKI).Methods:The continuous data of newly diagnosed CML patients with complete case data and first-line imatinib treatment admitted to the Affiliated Hospital of Inner Mongolia Medical University from January 2014 to June 2022 were retrospectively analyzed.Combined with the clinical characteristics of the patients and the efficacy analysis at each time point,a logistic regression model was used to explore the independent influencing factors of DMR,and combined HT of BCR-ABLIS with BCR-ABLIS level at 3 months to predict DMR of the patients.Results:Univariate and multivariate analyses showed that HT and 3-month BCR-ABLIS levels were independent influencing factors for MR4,MR4.5,and stable MR4.5(P<0.05).ROC curve analysis determined that the best cut-off value of HT was 28 days.Compared with patients with HT>28 d,patients with HT ≤28 d were more likely to obtain DMR at 2,3,and 5 years,respectively(74.2%vs 27.3%,71.2%vs 22.7%,and 63.6%vs 25.0%,all P<0.001).The patients were divided into 4 groups according to BCR-ABLIS levels at 3 months and HT.Kaplan-Meier analysis showed that the patients in the BCR-ABLIS ≤10%and HT≤28 d group had a higher probability of obtaining cumulative MR4 and MR4.5 than those in the BCR-ABLIS≤10%and HT>28 d group(P<0.05);Patients in the BCR-ABLIS>10%and HT≤28 d group had a higher probability of obtaining cumulative MR4 and MR4.5 than those in the BCR-ABLIS>10%and HT>28 d group(P<0.05).Conclusion:In addition to BCR-ABLIS level,HT of BCR-ABLIS can be used as another important predictor of treatment efficacy in CML patients.The combination of BCR-ABLIS level and HT has a more accurate predictive value for long-term molecular response of CML patients after TKI treatment.
5.A phase I dose-finding trial of hyperthermic intraperitoneal docetaxel combined with cisplatin in patients with advanced-stage ovarian cancer
Zhi-yao YOU ; Miao-fang WU ; Hui LI ; Yan-fang YE ; Li-juan WANG ; Zhong-qiu LIN ; Jing LI
Journal of Gynecologic Oncology 2024;35(1):e1-
Objective:
To identify the maximum tolerated dose (MTD) of docetaxel combined with a fixed dose of cisplatin (75 mg/m 2 ) delivered as hyperthermic intraperitoneal chemotherapy (HIPEC) in patients with ovarian cancer.
Methods:
In this phase I trial, a time-to-event Bayesian optimal interval design was used.Docetaxel was given at a starting dose of 60 mg/m2 and was increased in 5 mg/m2 increments until the MTD was determined or the maximum dose level of 75 mg/m2 was reached. The doselimiting toxicity (DLT) rate was set at 25%, with a total sample size of 30 patients. HIPEC was delivered immediately following debulking surgery at a target temperature of 43°C for 90 minutes.
Results:
From August 2022 to November 2022, 30 patients were enrolled. Among the patients who received a dose of docetaxel ≤65 mg/m2 , no DLT was reported. DLTs were observed in one patient who received 70 mg/m2 docetaxel (grade 3 anaemia) and in three patients who received 75 mg/m2 docetaxel (one case of grade 3 anaemia, one case of grade 3 hepatic impairment and one case of grade 4 thrombocytopenia). Patients treated with docetaxel 75 mg/m2 in combination with cisplatin 75 mg/m2 had an estimated DLT rate of 25%, which was the closest to the target DLT rate and was therefore chosen as the MTD.
Conclusion
Docetaxel, in combination with a fixed dose of cisplatin (75 mg/m2), can be used safely at intraperitoneal doses of 75 mg/m2 in ovarian cancer patients who received HIPEC (43°C, 90 minutes) following debulking surgery.
6.A phase I dose-finding trial of hyperthermic intraperitoneal docetaxel combined with cisplatin in patients with advanced-stage ovarian cancer
Zhi-yao YOU ; Miao-fang WU ; Hui LI ; Yan-fang YE ; Li-juan WANG ; Zhong-qiu LIN ; Jing LI
Journal of Gynecologic Oncology 2024;35(1):e1-
Objective:
To identify the maximum tolerated dose (MTD) of docetaxel combined with a fixed dose of cisplatin (75 mg/m 2 ) delivered as hyperthermic intraperitoneal chemotherapy (HIPEC) in patients with ovarian cancer.
Methods:
In this phase I trial, a time-to-event Bayesian optimal interval design was used.Docetaxel was given at a starting dose of 60 mg/m2 and was increased in 5 mg/m2 increments until the MTD was determined or the maximum dose level of 75 mg/m2 was reached. The doselimiting toxicity (DLT) rate was set at 25%, with a total sample size of 30 patients. HIPEC was delivered immediately following debulking surgery at a target temperature of 43°C for 90 minutes.
Results:
From August 2022 to November 2022, 30 patients were enrolled. Among the patients who received a dose of docetaxel ≤65 mg/m2 , no DLT was reported. DLTs were observed in one patient who received 70 mg/m2 docetaxel (grade 3 anaemia) and in three patients who received 75 mg/m2 docetaxel (one case of grade 3 anaemia, one case of grade 3 hepatic impairment and one case of grade 4 thrombocytopenia). Patients treated with docetaxel 75 mg/m2 in combination with cisplatin 75 mg/m2 had an estimated DLT rate of 25%, which was the closest to the target DLT rate and was therefore chosen as the MTD.
Conclusion
Docetaxel, in combination with a fixed dose of cisplatin (75 mg/m2), can be used safely at intraperitoneal doses of 75 mg/m2 in ovarian cancer patients who received HIPEC (43°C, 90 minutes) following debulking surgery.
7.A phase I dose-finding trial of hyperthermic intraperitoneal docetaxel combined with cisplatin in patients with advanced-stage ovarian cancer
Zhi-yao YOU ; Miao-fang WU ; Hui LI ; Yan-fang YE ; Li-juan WANG ; Zhong-qiu LIN ; Jing LI
Journal of Gynecologic Oncology 2024;35(1):e1-
Objective:
To identify the maximum tolerated dose (MTD) of docetaxel combined with a fixed dose of cisplatin (75 mg/m 2 ) delivered as hyperthermic intraperitoneal chemotherapy (HIPEC) in patients with ovarian cancer.
Methods:
In this phase I trial, a time-to-event Bayesian optimal interval design was used.Docetaxel was given at a starting dose of 60 mg/m2 and was increased in 5 mg/m2 increments until the MTD was determined or the maximum dose level of 75 mg/m2 was reached. The doselimiting toxicity (DLT) rate was set at 25%, with a total sample size of 30 patients. HIPEC was delivered immediately following debulking surgery at a target temperature of 43°C for 90 minutes.
Results:
From August 2022 to November 2022, 30 patients were enrolled. Among the patients who received a dose of docetaxel ≤65 mg/m2 , no DLT was reported. DLTs were observed in one patient who received 70 mg/m2 docetaxel (grade 3 anaemia) and in three patients who received 75 mg/m2 docetaxel (one case of grade 3 anaemia, one case of grade 3 hepatic impairment and one case of grade 4 thrombocytopenia). Patients treated with docetaxel 75 mg/m2 in combination with cisplatin 75 mg/m2 had an estimated DLT rate of 25%, which was the closest to the target DLT rate and was therefore chosen as the MTD.
Conclusion
Docetaxel, in combination with a fixed dose of cisplatin (75 mg/m2), can be used safely at intraperitoneal doses of 75 mg/m2 in ovarian cancer patients who received HIPEC (43°C, 90 minutes) following debulking surgery.
8.Expert consensus on ethical requirements for artificial intelligence (AI) processing medical data.
Cong LI ; Xiao-Yan ZHANG ; Yun-Hong WU ; Xiao-Lei YANG ; Hua-Rong YU ; Hong-Bo JIN ; Ying-Bo LI ; Zhao-Hui ZHU ; Rui LIU ; Na LIU ; Yi XIE ; Lin-Li LYU ; Xin-Hong ZHU ; Hong TANG ; Hong-Fang LI ; Hong-Li LI ; Xiang-Jun ZENG ; Zai-Xing CHEN ; Xiao-Fang FAN ; Yan WANG ; Zhi-Juan WU ; Zun-Qiu WU ; Ya-Qun GUAN ; Ming-Ming XUE ; Bin LUO ; Ai-Mei WANG ; Xin-Wang YANG ; Ying YING ; Xiu-Hong YANG ; Xin-Zhong HUANG ; Ming-Fei LANG ; Shi-Min CHEN ; Huan-Huan ZHANG ; Zhong ZHANG ; Wu HUANG ; Guo-Biao XU ; Jia-Qi LIU ; Tao SONG ; Jing XIAO ; Yun-Long XIA ; You-Fei GUAN ; Liang ZHU
Acta Physiologica Sinica 2024;76(6):937-942
As artificial intelligence technology rapidly advances, its deployment within the medical sector presents substantial ethical challenges. Consequently, it becomes crucial to create a standardized, transparent, and secure framework for processing medical data. This includes setting the ethical boundaries for medical artificial intelligence and safeguarding both patient rights and data integrity. This consensus governs every facet of medical data handling through artificial intelligence, encompassing data gathering, processing, storage, transmission, utilization, and sharing. Its purpose is to ensure the management of medical data adheres to ethical standards and legal requirements, while safeguarding patient privacy and data security. Concurrently, the principles of compliance with the law, patient privacy respect, patient interest protection, and safety and reliability are underscored. Key issues such as informed consent, data usage, intellectual property protection, conflict of interest, and benefit sharing are examined in depth. The enactment of this expert consensus is intended to foster the profound integration and sustainable advancement of artificial intelligence within the medical domain, while simultaneously ensuring that artificial intelligence adheres strictly to the relevant ethical norms and legal frameworks during the processing of medical data.
Artificial Intelligence/legislation & jurisprudence*
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Humans
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Consensus
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Computer Security/standards*
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Confidentiality/ethics*
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Informed Consent/ethics*
9.Research progress in alkaloids and their pharmacological effects from plants of Rutaceae.
Qiu-Juan CHEN ; Xiao-Wei SU ; Hui-Ting ZHANG ; Rui LI ; Yu-Ling LIU ; Hua-Feng ZHOU ; Jian SU ; Li-Ni HUO
China Journal of Chinese Materia Medica 2024;49(22):6030-6047
The plants of Rutaceae, with wide distribution in China, have a long history of medicinal use. They contain a wide variety of alkaloids, which include isoquinolines, quinolines, acridones, carbazoles, and indoles. Pharmacological studies have shown that most of these alkaloids have antitumor, anti-inflammatory, antiviral, antidiabetic and other activities. This article summarized 378 alkaloids isolated from plants of Rutaceae and their pharmacological effects, aiming to lay a basis for future drug development and sustainable utilization of plant resources.
Alkaloids/chemistry*
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Humans
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Rutaceae/chemistry*
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Animals
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Drugs, Chinese Herbal/chemistry*
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Anti-Inflammatory Agents/chemistry*
10.Observational study on perioperative outcomes of pelvic exenteration.
Hao YUAN ; Bing YAO ; Jun Tao LI ; Wen Liang ZHU ; Dong Lin REN ; Hui WANG ; Teng Hui MA ; Shu Qin CHEN ; Jian Jian WU ; Yi Ran TAO ; Lei YE ; Zhong Yang WANG ; Hu QU ; Bo MA ; Wen Wen ZHONG ; De Juan WANG ; Jian Guang QIU
Chinese Journal of Gastrointestinal Surgery 2023;26(3):260-267
Objective: To investigate the surgical indications and perioperative clinical outcomes of pelvic exenteration (PE) for locally advanced, recurrent pelvic malignancies and complex pelvic fistulas. Methods: This was a descriptive study.The indications for performing PE were: (1) locally advanced, recurrent pelvic malignancy or complex pelvic fistula diagnosed preoperatively by imaging and pathological examination of a biopsy; (2)preoperative agreement by a multi-disciplinary team that non-surgical and conventional surgical treatment had failed and PE was required; and (3) findings on intraoperative exploration confirming this conclusion.Contraindications to this surgical procedure comprised cardiac and respiratory dysfunction, poor nutritional status,and mental state too poor to tolerate the procedure.Clinical data of 141 patients who met the above criteria, had undergone PE in the Sixth Affiliated Hospital of Sun Yat-sen University from January 2018 to September 2022, had complete perioperative clinical data, and had given written informed consent to the procedure were collected,and the operation,relevant perioperative variables, postoperative pathological findings (curative resection), and early postoperative complications were analyzed. Results: Of the 141 included patients, 43 (30.5%) had primary malignancies, 61 (43.3%) recurrent malignancies, 28 (19.9%) complex fistulas after radical resection of malignancies,and nine (6.4%)complex fistulas caused by benign disease. There were 79 cases (56.0%) of gastrointestinal tumors, 30 cases (21.3%) of reproductive tumors, 16 cases (11.3%) of urinary tumors, and 7 cases (5.0%) of other tumors such mesenchymal tissue tumors. Among the 104 patients with primary and recurrent malignancies, 15 patients with severe complications of pelvic perineum of advanced tumors were planned to undergo palliative PE surgery for symptom relief after preoperative assessment of multidisciplinary team; the other 89 patients were evaluated for radical PE surgery. All surgeries were successfully completed. Total PE was performed on 73 patients (51.8%),anterior PE on 22 (15.6%),and posterior PE in 46 (32.6%). The median operative time was 576 (453,679) minutes, median intraoperative blood loss 500 (200, 1 200) ml, and median hospital stay 17 (13.0,30.5)days.There were no intraoperative deaths. Of the 89 patients evaluated for radical PE surgery, the radical R0 resection was achieved in 64 (71.9%) of them, R1 resection in 23 (25.8%), and R2 resection in two (2.2%). One or more postoperative complications occurred in 85 cases (60.3%), 32 (22.7%)of which were Clavien-Dindo grade III and above.One patient (0.7%)died during the perioperative period. Conclusion: PE is a valid option for treating locally advanced or recurrent pelvic malignancies and complex pelvic fistulas.
Humans
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Pelvic Exenteration/methods*
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Pelvic Neoplasms/surgery*
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Retrospective Studies
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Neoplasm Recurrence, Local/surgery*
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Postoperative Complications

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