ABSTRACT
OBJECTIVE@#Primary mediastinal yolk sac tumor, which is also known as endodermal sinus tumor, is a rare but lethal neoplasm and its prognosis is very dismal. The current treatment for this tumor is controversial, and chemotherapy combined with resection of residual lesions is adopted sometimes. We summarized the experience of seven primary mediastinal yolk sac tumors treated with platinum-based chemotherapy and extended resection in Peking University First Hospital.@*METHODS@#Clinicopathological data of the patients with primary mediastinal yolk sac tumor who received operation in Peking University First Hospital between August 2014 and August 2018 were collected and analyzed retrospectively.@*RESULTS@#We experienced seven primary mediastinal yolk sac tumors during this period. Computed tomography scan revealed an anterior mediastinal tumor in all the patients and all of them had markedly raised alphafetoprotein (AFP) and normal β-human chorion gonadotropin (β-HCG). Five patients underwent needle core biopsy before treatment, which showed a mediastinal yolk sac tumor. All of these patients received preoperative platinum-based chemotherapy and they all presented partial response according to computed tomography. Two other patients did not receive preoperative biopsy, so they directly underwent extended resection. All of the seven patients underwent operation successfully and two of them experienced postoperative complications, including one with pneumonia and the other with atelectasis. R0 resection was achieved in six patients and R1 resection was achieved in the other patient. According to postoperative pathology, there were one microcyst subtype, one adenoid subtye, one giant capsule subtype and two hybrid subtypes. Surprisingly, there were no yolk sac tumor tissue in the other two patients after preoperative chemotherapy. All the patients received postoperative chemotherapy, excluded one patient who was unable to tolerate chemotherapy after operation. Three patients experienced postoperative pulmonary metastases within one year and two of them died soon. The other patient received chemotherapy and immunotherapy after recurrence and he was alive at the time of writing. Four other patients were alive without recurrence and metastasis.@*CONCLUSION@#Primary mediastinal yolk sac tumor is rare and its prognosis is poor. A multimodality approach including adjuvant chemotherapy and resection of residual lesions is the optimal treatment and it may lead to long-term survival.
Subject(s)
Humans , Male , Endodermal Sinus Tumor , Mediastinal Neoplasms , Mediastinum , Neoplasm Recurrence, Local , Retrospective StudiesABSTRACT
Objective To evaluate the feasibility of 3D thoracoscopic system in uniportal video-assisted thoracoscopic surgery (uniportal VATS) for the treatment of thoracic diseases. Methods 7 cases of thoracic diseases were accomplished with 3D thoracoscope from Nov 2015 to Dec 2015, including 3 cases of lobectomy, 2 cases of wedge resection of pulmonary tumor, 2 cases of mediastinal mass. Results All the operations were completed successfully, without conversion to open surgery. All the patient recovery successfully. The data of operative time, bleeding volume, postoperative chest tube drainage and hospital time and postoperative complications were counted. No complications and tumor recurrence or metastasis were observed during the followed 3 months. Conclusion 3D thoracoscopic system can be used in uniportal video-assisted thoracoscopic surgery (uniportal VATS) safely and provide high-definition and better sense of depth which facilitate the operation more precise and safer.
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the survival and prognostic factors in patients undergoing potentially curative resection of stage IIIA-N2 non-small cell lung cancer.</p><p><b>METHODS</b>Clinical data of eighty-nine patients, who underwent curative operation from January 2003 to April 2007 in the Peking University First Hospital and were pathologically diagnosed as stage IIIA-N2 NSCLC, were reviewed. The patients were followed up until death or the cut-off date. The overall 3-year and 5-year survival rates were calculated, and Cox proportional hazard model was used to determine the clinical and pathological risk factors and evaluate their influence on the survival.</p><p><b>RESULTS</b>The three-year and five-year survival rates were 51.7% and 31.5%, respectively. The univariate Cox regression analysis revealed five significant factors associated with prognosis: the arm of age < 55, T3 stage, lymphovascular invasion (LVI), multiple positive N2 station and the number of positive N2 nodes > 3 were found to be at increased risk of tumor-related death, and those risk factors were confirmed especially in the age ≥ 55 group. Multivariate Cox regression analysis indicated three independent prognostic factors: T3 stage, LVI and multiple positive N2 station.</p><p><b>CONCLUSIONS</b>The results of this preliminary study show that T3 stage, lymphovascular invasion and N2 level (single or multiple station) are associated with the prognosis of stage IIIA-N2 NSCLC patients after potentially curative resection, and the characteristics of age < 55 and the number of positive N2 nodes > 3 may imply worse prognosis.</p>