Objective:To compare the short-term and long-term clinical effects of Ivor-Lewis and Mckeown esophagectomy in the treatment of middle or lower thoracic esophageal cancer.Methods:The clinical data of 716 patients with middle and lower thoracic esophageal cancer who underwent radical resection of Ivor Lewis or McKeown esophageal cancer in the Department of Thoracic Surgery, Cancer Hospital, Chinese Academy of Medical Science from March 2015 to October 2018 were analyzed retrospectively, and the perioperative indicators, postoperative complications and survival of the two surgical methods were compared.Results:Among 716 patients, 135 patients underwent Ivor Lewis esophagectomy and 581 patients underwent McKeown esophagectomy. Mckeown group was significantly superior to Ivor Lewis group in terms of total number of lymph node dissection [median number was 27 (19~37) vs 25(18~33)], total number of lymph node dissection stations [median number was 5(4~7) vs 5(4~5)], and number of lymph nodes dissection along recurrent laryngeal nerve [median number was 3 (1~6) vs 0 (0~3), P＜0.05]. However, the incidence of recurrent laryngeal nerve palsy in Mckeown group was significantly higher than that in Ivor Lewis group [10.7% (62/581) vs 1.5%(2/135), P＜0.001]. There was no significant difference in the 1 -, 3 -, 5-year overall survival between the Ivor Lewis group(91.0%, 70.5%, 52.9%) and the Mckeown group (89.7%, 68.4%, 62.4%, P＞0.05), and there was also no significant difference in the 1 -, 3 -, 5-year disease free survival between the Ivor Lewis group(77.0%, 54.1%, 44.0%) and the Mckeown group (78.3%, 59.0%, 52.8%, P＞0.05). Conclusions:Ivor Lewis esophagectomy and Mckeown esophagectomy are feasible, safe, good short-term efficacy and similar survival rate for middle and lower thoracic esophageal cancer. Ivor Lewis surgery has lower incidence of recurrent laryngeal nerve palsy. Mckeown operation has more advantages in lymph node dissection, especially in lymph node dissection beside the recurrent laryngeal nerve.

Objective:To compare the short-term and long-term clinical effects of Ivor-Lewis and Mckeown esophagectomy in the treatment of middle or lower thoracic esophageal cancer.Methods:The clinical data of 716 patients with middle and lower thoracic esophageal cancer who underwent radical resection of Ivor Lewis or McKeown esophageal cancer in the Department of Thoracic Surgery, Cancer Hospital, Chinese Academy of Medical Science from March 2015 to October 2018 were analyzed retrospectively, and the perioperative indicators, postoperative complications and survival of the two surgical methods were compared.Results:Among 716 patients, 135 patients underwent Ivor Lewis esophagectomy and 581 patients underwent McKeown esophagectomy. Mckeown group was significantly superior to Ivor Lewis group in terms of total number of lymph node dissection [median number was 27 (19~37) vs 25(18~33)], total number of lymph node dissection stations [median number was 5(4~7) vs 5(4~5)], and number of lymph nodes dissection along recurrent laryngeal nerve [median number was 3 (1~6) vs 0 (0~3), P＜0.05]. However, the incidence of recurrent laryngeal nerve palsy in Mckeown group was significantly higher than that in Ivor Lewis group [10.7% (62/581) vs 1.5%(2/135), P＜0.001]. There was no significant difference in the 1 -, 3 -, 5-year overall survival between the Ivor Lewis group(91.0%, 70.5%, 52.9%) and the Mckeown group (89.7%, 68.4%, 62.4%, P＞0.05), and there was also no significant difference in the 1 -, 3 -, 5-year disease free survival between the Ivor Lewis group(77.0%, 54.1%, 44.0%) and the Mckeown group (78.3%, 59.0%, 52.8%, P＞0.05). Conclusions:Ivor Lewis esophagectomy and Mckeown esophagectomy are feasible, safe, good short-term efficacy and similar survival rate for middle and lower thoracic esophageal cancer. Ivor Lewis surgery has lower incidence of recurrent laryngeal nerve palsy. Mckeown operation has more advantages in lymph node dissection, especially in lymph node dissection beside the recurrent laryngeal nerve.

The status of lymph node metastasis is an important parameter affecting the survival of patients with esophageal carcinoma, which is primarily determined by histological type and the depth of invasion. However, affected by pathological features, heterogeneity and individual differences of tumors, the present staging system of lymph node in esophageal carcinoma has not been unified, the rule of lymph node metastasis remains unclear, and the extent of lymphadenectomy is still controversial. Current lymph node staging system for esophageal carcinoma may be not effective enough, which may lead to inaccurate assessment of the stage and affect the clinicians' choice of treatment modalities, or even affect the conclusions of clinical trials. Therefore, it is essential to optimize the current lymph node staging system for esophageal carcinoma to guide the surgery-based multidisciplinary treatment, and effectively to evaluate the therapeutic effects and predict patients' prognosis.

The status of lymph node metastasis is an important parameter affecting the survival of patients with esophageal carcinoma, which is primarily determined by histological type and the depth of invasion. However, affected by pathological features, heterogeneity and individual differences of tumors, the present staging system of lymph node in esophageal carcinoma has not been unified, the rule of lymph node metastasis remains unclear, and the extent of lymphadenectomy is still controversial. Current lymph node staging system for esophageal carcinoma may be not effective enough, which may lead to inaccurate assessment of the stage and affect the clinicians' choice of treatment modalities, or even affect the conclusions of clinical trials. Therefore, it is essential to optimize the current lymph node staging system for esophageal carcinoma to guide the surgery-based multidisciplinary treatment, and effectively to evaluate the therapeutic effects and predict patients' prognosis.

Esophageal cancer is a malignant tumor with a high incidence in China. At pesent, advanced esophageal cancer patients are still frequently encountered. The primary treatment for resectable advanced esophageal cancer is surgery-based multimodality therapy, including preoperative neoadjuvant therapy, such as chemotherapy, chemoradiotherapy or chemotherapy plus immunotherapy, followed by radical esophagectomy with thoraco-abdominal two-field or cervico-thoraco-abdominal three-field lymphadenectomy via minimally invasive approach or thoracotomy. In addition, adjuvant chemotherapy, radiotherapy, or chemoradiotherapy, or immunotherapy may also be administered if suggested by postoperative pathological results. Although the treatment outcome of esophageal cancer has improved significantly in China, many clinical issues remain controversial. In this article, we summarize the current hotspots and important issues of esophageal cancer in China, including prevention and early diagnosis, treatment selection for early esophageal cancer, surgical approach selection, lymphadenectomy method, preoperative neoadjuvant therapy, postoperative adjuvant therapy, and nutritional support treatment.
Humans ; Esophageal Neoplasms/surgery* ; Combined Modality Therapy ; Neoadjuvant Therapy/methods* ; Chemoradiotherapy ; Chemotherapy, Adjuvant ; Esophagectomy/methods*

Resection is one of the most important treatments for esophageal squamous cell carcinoma, and routine postoperative follow-up is an effective method for early detection and treatment of recurrent metastases, which can improve patients' quality of life and prognosis. This consensus aims to provide a reference for colleagues responsible for postoperative follow-up of esophageal squamous cell carcinoma patients in China, and further improve the standardization of the diagnosis and treatment of esophageal squamous cell carcinoma.

Background::Parkinson’s disease (PD) is the second most common neurodegenerative disease after Alzheimer’s dementia. Mitochondrial dysfunction is involved in the pathology of PD. Coiled-coil-helix-coiled-coil-helix domain-containing 2 (CHCHD2) was identified as associated with autosomal dominant PD. However, the mechanism of CHCHD2 in PD remains unclear.Methods::Short hairpin RNA (ShRNA)-mediated CHCHD2 knockdown or lentivirus-mediated CHCHD2 overexpression was performed to investigate the impact of CHCHD2 on mitochondrial morphology and function in neuronal tumor cell lines represented with human neuroblastoma (SHSY5Y) and HeLa cells. Blue-native polyacrylamide gel electrophoresis (PAGE) and two-dimensional sodium dodecyl sulfate-PAGE analysis were used to illustrate the role of CHCHD2 in mitochondrial contact site and cristae organizing system (MICOS). Co-immunoprecipitation and immunoblotting were used to address the interaction between CHCHD2 and Mic10. Serotype injection of adeno-associated vector-mediated CHCHD2 and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) administration were used to examine the influence of CHCHD2 in vivo.Results::We found that the overexpression of CHCHD2 can protect against methyl-4-phenylpyridinium (MPP+)-induced mitochondrial dysfunction and inhibit the loss of dopaminergic neurons in the MPTP-induced mouse model. Furthermore, we identified that CHCHD2 interacted with Mic10, and overexpression of CHCHD2 can protect against MPP +-induced MICOS impairment, while knockdown of CHCHD2 impaired the stability of MICOS. Conclusion::This study indicated that CHCHD2 could interact with Mic10 and maintain the stability of the MICOS complex, which contributes to protecting mitochondrial function in PD.

Resectable non-small cell lung cancer (NSCLC) is currently considered as a potentially curable disease. Surgery is still the main treatment mode for resectable NSCLC, but quite a few patients will have local recurrence and distant metastasis after surgery. Therefore, preoperative and postoperative adjuvant therapy may be necessary in order to improve the long term outcome. Immunocheckpoint inhibitor has been demonstrated clinically to be effective andapproved as first- or second-line treatment agent in metastatic NSCLC or partially locally advanced NSCLC. The remarkable efficacy of immunotherapy for advanced lung cancer has attracted more and more attention from the researchers to the role of immunotherapy as neoadjuvent therapy in resectable non-small cell lung cancer. This article systematically reviewed the clinical trials of neoadjuvant immunotherapy for resectable NSCLC before surgery.

Objective:To investigate the feasibility of near-infrared fluorescence imaging (NIRFI) to assist in determining the resection range of radiation intestinal injury (RII).Methods:A descriptive cohort study was conducted. Clinical data of 10 RII patients who presented intestinal obstruction and received operation with more than 100 cm of small intestine had been resected atGeneral Department of Jinling Hospital from October 2014 to January 2015 were retrospectively analyzed. The Novadaq SPY Intra-operative Imaging System was used in capturing and viewing fluorescent images. Firstly, the dense adhesion was mobilized and the obstructive intestine was fully freed under laparoscopy, then entering into abdomen from the corresponding incision. The surgeon determined the resection range according to the color of the intestinal serous layer of the diseased intestinal wall, the thickness of the intestinal wall, and the degree of swelling of the mesentery. Afterwards, intra-operative NIRFI was performed by intravenous injection of 2 ml indocyanine green (ICG) and the imaging results of the diseased intestinal arteriovenous phase were observed and recorded. The evaluation criteria for the final resection range were mainly based on the changes in mesenteric arterial phase imaging. In RII lesions, mesenteric vessels in mesenteric artery phase were disordered, and the comb-like distribution of normal mesenteric vessels completely disappeared. Only the clouded appearance in the intestinal wall was observed. Imaging results of the diseased intestinal tissue during the development phase and mesenteric vein phase were not significantly different from normal intestinal tissue. Intraoperative and postoperative conditions under NIRFI-assisted positioning, including the resection range, anastomosis site, operation-related complications, hospitalization time and cost were recorded. Data of abdominal contrast-enhanced CT and gastrointestinal angiography during 5 years of follow-up were collected to evaluate whether there was anastomotic stenosis or insufficient resection of diseased bowel.Results:Based on the imaging of mesenteric arterial phase of NIRFI, the median resection length of the small intestine was 185 (120-260) cm. After NIRFI imaging, only local lesion of ileum was excised in 6 patients, and jejunum-ileum anastomosis was performed to preserve ileocecal flap. No serious complications such as anastomotic leakage and anastomotic hemorrhage, or chronic intestinal failure such as short bowel syndrome occurred. The median hospitalization time was 32 (22-51) days, and the median hospitalization cost was 142 000 (90 000-175 000) RMB. The hospitalization time and cost were mainly used for the enteral and parenteral nutrition support treatment during the perioperative period. All the patients had normal oral diet and/or oral enteral nutrient. After 5 years of follow-up, no recurrence was found. Abdominal contrast-enhanced CT and gastrointestinal angiography showed no thickening of the intestinal wall or stenosis of the lumen.Conclusion:Mesenteric arterial phase imagingof NIRFI can help surgeons to determine the site and range of resection of RII lesions.

Objective:To investigate the feasibility of near-infrared fluorescence imaging (NIRFI) to assist in determining the resection range of radiation intestinal injury (RII).Methods:A descriptive cohort study was conducted. Clinical data of 10 RII patients who presented intestinal obstruction and received operation with more than 100 cm of small intestine had been resected atGeneral Department of Jinling Hospital from October 2014 to January 2015 were retrospectively analyzed. The Novadaq SPY Intra-operative Imaging System was used in capturing and viewing fluorescent images. Firstly, the dense adhesion was mobilized and the obstructive intestine was fully freed under laparoscopy, then entering into abdomen from the corresponding incision. The surgeon determined the resection range according to the color of the intestinal serous layer of the diseased intestinal wall, the thickness of the intestinal wall, and the degree of swelling of the mesentery. Afterwards, intra-operative NIRFI was performed by intravenous injection of 2 ml indocyanine green (ICG) and the imaging results of the diseased intestinal arteriovenous phase were observed and recorded. The evaluation criteria for the final resection range were mainly based on the changes in mesenteric arterial phase imaging. In RII lesions, mesenteric vessels in mesenteric artery phase were disordered, and the comb-like distribution of normal mesenteric vessels completely disappeared. Only the clouded appearance in the intestinal wall was observed. Imaging results of the diseased intestinal tissue during the development phase and mesenteric vein phase were not significantly different from normal intestinal tissue. Intraoperative and postoperative conditions under NIRFI-assisted positioning, including the resection range, anastomosis site, operation-related complications, hospitalization time and cost were recorded. Data of abdominal contrast-enhanced CT and gastrointestinal angiography during 5 years of follow-up were collected to evaluate whether there was anastomotic stenosis or insufficient resection of diseased bowel.Results:Based on the imaging of mesenteric arterial phase of NIRFI, the median resection length of the small intestine was 185 (120-260) cm. After NIRFI imaging, only local lesion of ileum was excised in 6 patients, and jejunum-ileum anastomosis was performed to preserve ileocecal flap. No serious complications such as anastomotic leakage and anastomotic hemorrhage, or chronic intestinal failure such as short bowel syndrome occurred. The median hospitalization time was 32 (22-51) days, and the median hospitalization cost was 142 000 (90 000-175 000) RMB. The hospitalization time and cost were mainly used for the enteral and parenteral nutrition support treatment during the perioperative period. All the patients had normal oral diet and/or oral enteral nutrient. After 5 years of follow-up, no recurrence was found. Abdominal contrast-enhanced CT and gastrointestinal angiography showed no thickening of the intestinal wall or stenosis of the lumen.Conclusion:Mesenteric arterial phase imagingof NIRFI can help surgeons to determine the site and range of resection of RII lesions.