Early diagnosis of lung cancer is of great significance for reducing mortality and improving survival. Traditional methods of early diagnosis of lung cancer have their own limitations. The exhaled breath can reflect the disease state of the body, which has great potential in the early diagnosis of lung cancer. In this paper, the diagnosis of lung cancer and the application of exhaled breath detection technology in the diagnosis of lung cancer were reviewed.
ObjectiveTo explore the discipline of superior mediastinum lymph node metastasis of esophageal carcinoma, laying a foundation for the standardization of lymphadenectomy. MethodsWe retrospectively analyzed the clinical data of 586 patients with esophageal carcinoma in our hospital between June 2009 and June 2014. There were 489 males and 97 females at age of 61.61±7.92 years. We analyzed the discipline of lymph node metastasis in these patients. ResultsThe mean number of lymph nodes dissection was 20.48±11.01 per patient. A total of 1 212 lymph nodes metastasis was found in 326 patients (55.63%). The ratio of lymph nodes metastasis in the superior mediastinum, lower mediastinum, and abdominal cavity was 29.35%, 25.94%, and 31.74% respectively with no statistical difference among the three groups (χ2=4.839, P=0.089). In regard to upper thoracic esophageal carcinoma, the ratio of lymph nodes metastasis in the superior mediastinum, lower mediastinum, and abdominal cavity was 43.48%, 3.73%, and 13.73% respectively with higher metastasis rate (χ2=32.692, P=0.000) in the upper mediastinum. In middle thoracic esophageal carcinoma patients, there was no statistical differences in the ratio of lymph node metastasis among upper mediastinum (28.19%), lower mediastinum (29.53%), and abdominal cavity (31.54%, χ2=0.566, P=0.753). While in the patients with the lower thoracic esophageal carcinoma, the ratio of lymph nodes metastasis in the superior mediastinum, lower mediastinum, and abdominal cavity was 22.92%, 27.08%, and 41.67%, respectively with higher ratio of lymph nodes metastasis in abdominal cavity (χ2=17.542, P=0.000). The involved ratio of the right recurrent lymph nodes (19.80%) was the highest among all the lymph nodes in the superior mediastinum (χ2=112.304, P=0.000). ConclusionUpper mediastinum is one of the predilection sites of lymph nodes metastasis of esophageal carcinoma, focusing on the resection of superior mediastinum lymph nodes, especially the right recurrent lymph nodes can decrease the chances of relapse by reducing residual tumor cells.
ObjectiveTo elucidate the clinical pattern of pulmonary lymph node metastasis and the significance of station No.12 and No. 13 lymph nodes biopsy in patients with non-small cell lung cancer (NSCLC). MethodsThirty-eight NSCLC patients underwent standard radical resection of pulmonary carcinoma and systemic lymphadenectomy between January 2015 and June 2015. There were 29 males and 9 females with a mean age of 61.1±15.4 years (ranged from 44 to 73 years). There were 20 patients of squamous carcinoma, 17 patients of adenocarcinoma and 1 patient of sarcomatoid carcinoma. All patients didn't receive radioor chemotherapy before the operation. All the lymph nodes in the surgical specimens were marked and sampled for pathology examination. ResultsWe obtained 652 lymph nodes in total (17.2 per patient). Seventy-eight lymph nodes of 24 patients showed lymphatic metastasis with a metastasis degree of 12.0% (78/652) and a metastasis rate of 63.2% (24/38). Among which there were 22 patients of N1 metastasis, 10 of N1+N2 and 2 of N2 skipping metastasis. Routine pathological examination of N1 metastasis demonstrated 12 patients of positive station No.12 and No.13 lymph nodes with the metastasis rate of 31.6%. The total amount of dissected lymph nodes was 95, among which there were 14 lymphatic metastasis with the metastasis rate of 14.7%. Four patients with nodal involvement in lymph node stations No.12 or No.13 were identified from 18 patients without mediastinal and intrapulmonary lymph node metastases confirmed by routine pathological examination. The detection rate was 22.2% (4/18) and the rate of N1 missed diagnosis was 33.3% (4/12). Univariate and multivariate analysis suggested that the metastasis degree of pulmonary lymph nodes of station No.12 and No.13 was associated with tumor differentiation grade (χ2=6.453,P=0.011), while it didn't show any significant differences as to pathology subtype (χ2=0.118, P=0.732), tumor size (χ2=0.930, P=0.759), or tumor classification (χ2=1.648, P=0.199). ConclusionPulmonary lymph node metastasis occupies an important place in the process of lung cancer metastasis. Patients with NSCLC especially those of poorly differentiated should be pathologically examined regularly in order to improve the accuracy of staging.
Objective To compare the effect of uniportal and multiportal thoracoscopic lobectomy, and to explore the advantages and applications of uniportal thoracoscopic lobectomy in enhanced recovery after surgery. Methods Totally 169 patients with video-assisted thoracoscopic lobectomy in Department of Thoracic Surgery of Sichuan Cancer Hospital from January to December 2016 were enrolled. There were 99 males and 70 females with age of 60.83±7.24 years. Patients were divided into two groups: a uniportal group (78 patients) and a multiportal group (91 patients) . Patients’ clinical and pathological materials were collected. Postoperative pain, complications and hospital stay, etc of the two groups were compared. Results All patients were successfully discharged without serious postoperative complication or death. Patients in the multiportal group had smaller surgical incisions than that in the uniportal group (3.12±0.73 cm vs. 6.38±1.50 cm, P=0.016). Pain scores at postoperative 24 and 48 hours of the uniportal group were less than those of multiportal group (4.18±1.67 vs. 6.54±1.83, 3.05±1.47 vs. 4.68±1.64, P<0.05). Operation data, postoperative complications and hospital stay were similar in both groups. Conclusion Uniportal video-assisted thoracoscopic lobectomy makes smaller incisions and can further reduce postoperative pain and dosage of morphine. The operation is safe and worthy of wide application in enhanced recoveryafter surgery.
ObjectiveTo compare the clinical efficacy of modified Ivor-Lewis esophagectomy, which preserves azygos vein, thoracic duct and peripheral tissues, and classic Ivor-Lewis esophagectomy, which resects these tissues, in the treatment of esophageal cancer, so as to evaluate whether it is necessary to resect azygos vein, thoracic duct and peripheral tissues in esophagectomy for esophageal cancer.MethodsPatients scheduled for surgical treatment of thoracic esophageal cancer in Department of Thoracic Surgery of Sichuan Cancer Hospital from June 2011 to June 2013 were randomly assigned to the retention group and the resection group, each including 100 patients. The retention group included 87 males and 13 females with an average age of 60.53±7.72 years. In the resection group, there were 80 males and 20 females with an average age of 60.69±7.69 years. Patients in the two groups were compared for the duration of surgery, intraoperative blood loss, postoperative thoracic drainage volume, postoperative complications, and number of dissected lymph nodes, etc. Postoperative relapse and survival rates at 1, 3 and 5 years postoperatively were also followed up and compared for patients in the two groups.ResultsThere was no statistical difference between the two groups in general patient characteristics, number of dissected lymph nodes, or postoperative pathological stage, etc. (P>0.05). Compared to the resection group, there were shorter duration of surgery, less intraoperative blood loss, and less thoracic drainage volume in the first 3 days following surgery in the retention group, with statistical differences (P<0.05). There was no statistical difference between the two groups in type or site of relapse or metastasis (P>0.05). The survival rates at 1, 3, and 5 years postoperatively was 78.7% vs. 81.3%, 39.4% vs. 37.5%, and 23.4% vs. 17.7%, respectively, in the retention group and the resection group, with no statistical difference (P>0.05).ConclusionModified Ivor-Lewis esophagectomy preserving azygos vein, thoracic duct and peripheral tissues could reduce surgical trauma, would not increase postoperative relapse or metastasis, and could produce long-term efficacy comparable to that of extended resection.
Objective To analyze the clinicopathological characteristics of thymoma patients and the influencing factors for prognosis. Methods Thymoma patients who received treatment in Sichuan Cancer Hospital from March 2015 to March 2021 were collected. Clinical data of the patients were analyzed using Kaplan-Meier and Cox regression analyses. Results A total of 177 patients were included. There were 89 males and 88 females aged 17-88 (52.3±13.0) years, including 160 surgical patients and 17 non-surgical patients. There were 160 patients survived, 17 died of thymoma, and 5 had recurrence and metastasis. Overall, the 1-year, 3-year and 5-year progression-free survival rates were 94.4%, 88.7%, 88.1%, respectively; the 1-year, 3-year and 5-year overall survival rates were 94.9%, 91.5%, 91.0%, respectively. The Kaplan-Meier analysis showed that World Health Organization classification, clinical symptoms, Masaoka-Koga staging, treatment methods and surgery were statistically associated with progression-free survival; clinical symptoms, age, treatment methods and surgery were statistically associated with overall survival (P<0.05). Patients with younger age (P=0.018), without clinical symptoms (P=0.039), and with surgical treatment (P=0.004) had higher overall survival rates; those patients undergoing surgery had a higher progression-free survival rate (P=0.002). Conclusion Age, clinical symptoms and surgical treatment are independent factors influencing the prognosis of patients with thymoma.
ObjectiveTo investigate the predictive value of volatile organic compounds (VOCs) on pulmonary nodules in people aged less than 50 years.MethodsThe 147 patients with pulmonary nodules and aged less than 50 years who were treated in the Department of Thoracic Surgery of Sichuan Cancer Hospital from August 1, 2019 to January 15, 2020 were divided into a lung cancer group and a lung benign disease group. The lung cancer group included 36 males and 68 females, with the age of 27-49 (43.54±5.73) years. The benign lung disease group included 23 males and 20 females, with the age of 22-49 (42.49±6.83) years. Clinical data and exhaled breath samples were collected prospectively from the two groups. Exhaled breath VOCs were analyzed by gas chromatography mass spectrometry. Binary logistic regression analysis was used to select variables and establish a prediction model. The sensitivity, specificity, and area under the receiver operating characteristic (ROC) curve of the prediction model were calculated.ResultsThere were statistically significant differences in sex (P=0.034), smoking history (P=0.047), cyclopentane (P=0.002), 3-methyl pentane (P=0.043) and ethylbenzene (P=0.009) between the two groups. The sensitivity, specificity and area under the ROC curve of the prediction model with gender, cyclopentane, 3-methyl pentane, ethylbenzene and N,N-dimethylformamide as variables were 80.8%, 60.5% and 0.781, respectively.ConclusionThe combination of VOCs and clinical characteristics has a certain predictive value for the benign and malignant pulmonary nodules in people aged less than 50 years.