No abstract available.
Thoracic Surgery, Video-Assisted*

BACKGROUND: Isolated lung perfusion (ILP) was developed as a new treatment approach to non-resectable primary or metastatic lung cancer, because of its ability to reduce systemic toxicity while delivering high-dose chemotherapeutic agents to the target organs. This research was planned to evaluate the direct toxic effect of high-dose cisplatin to the lung tissue during isolated lung perfusion. MATERIAL AND METHOD: Fifteen mongrel dogs were divided in the perfusate for 40 minutes. The second group was composed of 5 mongrel dogs which underwent ILP with cisplatin 2.5 mg/Kg added to the perfusate for 30 minutes and 10 minutes with washing solution without cisplatin. The third group underwent the same procedure as the second group except cisplatin 5.0 mg/Kg in the perfusate. Activities of serum angiotensin converting enzyme (ACE), tumor necrosis factor-alpha (TNF-alpha), and concentration of serum lactate dehydrogenase (LDH) and blood urea nitrogen/creatinine (BUN/Cr) were analyzed in each groups at the time of pre-perfusion, 1 hour, 1 day, 1 week, and 2 weeks after ILP. RESULT: Serum ACE activities before and 1 hour, 1 day, 1 week, and 2 weeks after ILP in control group were 45.1+/-6.3, 44.6+/-9.3, 46.7+/-9.5, 50.8+/-9.1, 46.1+/-4.3 U/L. Those in cisplatin 2.5 and 5.0 mg/Kg groups were 49.4+/-12.6, 39.0+/-8.6, 42.3+/-15.9, 50.0+/-2.6, 53.8+/-8.3 and 55.5+/-12.3, 47.0+/-6.3, 45.1+/-6.9, 74.8+/-19.5, 60.2+/-12.0 U/L, respectively. Serum TNF-alpha activities in each group before and after ILP were 5.0+/-1.5 / 7.7+/-2.2 / 6.6+/-2.5 / 4.3+/-1.3 / 5.2+/-1.1 (control), 8.7+/-1.6 / 9.9+/-2.2 / 7.9+/-1.5 / 6.3+/-2.2 / 7.4+/-2.4 (cisplatin 2.5 mg/Kg), and 6.9+/-0.7 / 8.9+/-3.4 / 7.9+/-4.0 / 3.3+/-0.9 / 5.8+/-1.3 pg/ml (cisplatin 5.0 mg/Kg). Mean LDH levels of each group were 225.7 / 271.3 / 328.9 / 350.8 / 255.7(control), 235.7 / 265.7 / 336.0 / 379.5 / 299.2 (cisplatin 2.5 mg/Kg), and 259.6 / 285.2 / 340.6 / 433.4 / 292.4 IU/L (cisplatin 5.0 mg/Kg). So there was no significant difference in serum ACE, TNF-alpha, and LDH activity changes after ILP between the 3 groups. And, there was no significant changes in BUN/Cr in each groups, which was independent of ILP and perfused concentration of cisplatin. In addition, all dogs survived the ILP and there was no significant evidence of pulmonary vascular injury after 2 weeks of ILP with cisplatin. CONCLUSION: There was no harmful effect of cisplatin to the lund tissue of the mongrel dog up to 5.0 mg/Kg in perfusate. Therefore, it is perceived to be safe and effective to deliver high-dose cisplatin to the lung without pulmonary toxicity and renal damage with ILP.
Animals ; Cisplatin* ; Dogs* ; L-Lactate Dehydrogenase ; Lung Neoplasms ; Lung* ; Peptidyl-Dipeptidase A ; Perfusion* ; Tumor Necrosis Factor-alpha ; Urea ; Vascular System Injuries

BACKGROUND: Many recent results of clinical trials show that pre-operative concurrent chemoradiotherapy and surgical resection could increase the survival of N2 positive stage IIIA non-small cell lung cancer. This study was performed to assess the feasibility, toxicity, and affect rates of concurrent chemoradiotherapy and surgical resection in N2 positive stage IIIA non-small cell lung cancer. MATERIAL AND METHOD: Thirty-one patients who underwent preoperative concurrent chemoradiotherapy for N2 positive stage IIIA non-small-cell lung cancer from May 1997 to April 1999 were entered into the study. Mean age was 61 yrs (43-70 yrs), There were 24 men and 7 women. The confirmation of N2 disease were achieved through mediastinoscopic biopsy (24) and CT scans (7). Induction was achieved by two cycles of cisplatin and etoposide(EP) plus concurrent chest radiotherapy to 45 Gy. Resections were done at 3 weeks after the complection of preoperative concurrent chemoradiotherapy. Resections were performed in 23 patients, excluding 5 refusals and 3 distant metastasis. All patients were compled the thoracic radiotherapy except one who had distant metastasis. Twenty three patients were completed the planned 2 cycles of EP chemotherapy, and 8 patients were received only 1 cycle for severe side effects (6), refusal (1), and distant metastasis(1). There was one postoperative mortality, and the cause of death was ARDS. Three patients who had neutropenic fever and one patient who had radiation pneumonitis were required admission and treatment. Esophagitis was the most common acute side effect, but relatively well-tolerated in most patients. The complection rate of concurrent chemoradiotherapy was 74%, resection rate was 71%, pathologic complete remission rate was 13.6%, and pathologic down-staging rate was 68%. CONCLUSION: Morbidity related to each treatment was acceptable and many of the patients have benefited down staging of its disease. Further prospective, preferably randomized, clinical trials of larger scale may be warranted to confirm the actual benefit of preoperative concurrent chemoradiotherapy and surgical resection in N2-positive stage IIIA non-small cell lung cancer.
Biopsy ; Carcinoma, Non-Small-Cell Lung ; Cause of Death ; Chemoradiotherapy* ; Cisplatin ; Disulfiram ; Drug Therapy ; Esophagitis ; Female ; Fever ; Humans ; Lung Neoplasms ; Male ; Mortality ; Neoplasm Metastasis ; Radiation Pneumonitis ; Radiotherapy ; Thorax ; Tomography, X-Ray Computed

BACKGROUND: During bilateral transthoracic endoscopic sympathicotomy (TES), we have noticed a tendency for hypoxemia during deflation of the second lung despite adequate reinflation of the first one. This study was designed to compare PaO2 during TES of the first side with that of TES of the second side and to investigate whether PaO2 during the sequential one-lung ventilation (OLV) was correlated with two-lung ventilation (TLV) time after reinflation of the collapsed first lung. METHODS: Forty patients were randomly allocated into two groups. After TES of the first side, OLV of the second side was immediately performed after reinflation of the collapsed first lung (group A), or after 10 minutes of TLV when switching between the operated sides (group B). Arterial blood gas samples were taken at TLV before surgery, at 2 minute intervals during OLV, and during the period of TLV when switching between the operated sides. RESULTS: In group A, the significantly decreased PaO2 was observed during TES of the second side compared with TES of the first side (P < 0.01). In group B, there was no significant difference in PaO2 except 2 minutes after OLV. PaO2 during TLV and 4 and 6 minutes after OLV of the second side TES in group A significantly decreased compared with those of group B (P < 0.05). The lowest PaO2 during OLV of the second side TES was significantly lower in group A (93.5 +/- 28.7 mmHg) than in group B (154.1+/- 48.3 mmHg). CONCLUSIONS: A significantly decreased PaO2 was observed during TES of the second side, compared with TES of the first side, and time was needed after lung collapse for its full oxygenation function to recover.
Anoxia ; Humans ; Lung ; One-Lung Ventilation* ; Oxygen ; Pulmonary Atelectasis ; Ventilation*

BACKGROUND: During bilateral transthoracic endoscopic sympathicotomy (TES), we have noticed a tendency for hypoxemia during deflation of the second lung despite adequate reinflation of the first one. This study was designed to compare PaO2 during TES of the first side with that of TES of the second side and to investigate whether PaO2 during the sequential one-lung ventilation (OLV) was correlated with two-lung ventilation (TLV) time after reinflation of the collapsed first lung. METHODS: Forty patients were randomly allocated into two groups. After TES of the first side, OLV of the second side was immediately performed after reinflation of the collapsed first lung (group A), or after 10 minutes of TLV when switching between the operated sides (group B). Arterial blood gas samples were taken at TLV before surgery, at 2 minute intervals during OLV, and during the period of TLV when switching between the operated sides. RESULTS: In group A, the significantly decreased PaO2 was observed during TES of the second side compared with TES of the first side (P < 0.01). In group B, there was no significant difference in PaO2 except 2 minutes after OLV. PaO2 during TLV and 4 and 6 minutes after OLV of the second side TES in group A significantly decreased compared with those of group B (P < 0.05). The lowest PaO2 during OLV of the second side TES was significantly lower in group A (93.5 +/- 28.7 mmHg) than in group B (154.1+/- 48.3 mmHg). CONCLUSIONS: A significantly decreased PaO2 was observed during TES of the second side, compared with TES of the first side, and time was needed after lung collapse for its full oxygenation function to recover.
Anoxia ; Humans ; Lung ; One-Lung Ventilation* ; Oxygen ; Pulmonary Atelectasis ; Ventilation*

Postpneumonectomy syndrome is a disease entity which arises after right pneumonectomy in left aortic arch and left pneumoncectomy in right aortic arch. This syndrome have a feature of severe mediastinal deviation and rotation, and induces severe respiratoy insufficiency. This syndrome is rare, but should be considered when pneumonectomized patient complaints who have severe dyspnea. In Samsung medical center, We report a sucessfully treated patient with postpneumonectomy syndrome, who had experienced right pneumonectomy at 1 years ago.
Aorta, Thoracic ; Dyspnea ; Humans ; Pneumonectomy ; Postoperative Complications

Localized fibrous tumor of the pleura is a rare condition. Most follow a benign course and they are found as an incidental finding during routine chest X-ray. A small proportion of these tumors are malignant and have characteristic clinical and histopathological features. In this paper, we report three cases of localized fibrous tumors of the pleura, one malignant associated with asymptomatic hypoglycemia, the others benign. In a malignant case, the tumor was resected through thoracotomy and the hypoglycemia was relieved immediately. In two benign cases, tumors on small pedicles were resected using video-assisted thoracic surgical technique.
Hypoglycemia ; Incidental Findings ; Pleura* ; Pleural Neoplasms ; Thoracic Surgery ; Thoracotomy ; Thorax

We evaluated the feasibility and safety of this method by reviewing the early outcome of the patients who underwent coronary artery bypass grafting(CABG) utilizing parallel sequential anastomoses with saphenous vein grafts, comparing with the outcome of the patients revascularized with grafts having only single distal anastomosis. During the one-year period of 1995, a total of 79 patients underwent isolated CABG, among whom 39 patients with sequential vein grafts(sequential group) and 40 patients without sequential grafts(non-sequential group). There was no difference between the two groups in terms of preoperative status, except in the extent of the coronary disease; 87.2% of the sequential group and 45.0% of the non-sequential group had left main and/or triple vessel involvement. 318 distal coronary anastomoses were done; 198 for the sequential group(5.1/patient) and 120 for the non-sequential group(3.0/patient). In the sequential group, the mean durations of cardiopulmonary bypass and aortic clamp per one distal anastomosis were 33.5 and 21.1 minutes, respectively. In the non-sequential group, these were 41.8 and 22.7 minutes. There were two operative deaths, both in the non-sequential group. There was no difference in the incidence of postoperative complications including myocardial infarction. During the follow-up period(2 to 15 months), 8 patients(3 in the sequential and 5 in the non- sequential group) complained of residual or recurrent angina. Comparison of preoperative and postoperative 201Thallium myocardial perfusion scans in 30 patients showed improved or normal perfusion reserve in 83.3% of segments bypassed with sequential grafts and 82.5% of segments bypassed with non-sequential graft(s). These results show that, utilizing parallel sequential anastomoses with saphenous vein grafts, we could achieve satisfactory short-term clinical results in patients with extensive coronary stenoses. So, we conclude that this technique is a safe, technically feasible strategy for CABG, which can achieve the aim of complete myocardial revascularization with a limited length of graft. These results show that, utilizing parallel sequential anastomoses with saphenous vein grafts, we could achieve satisfactory short-term clinical results in patients with extensive coronary stenoses. So, we conclude that this technique is a safe, technically feasible strategy for CABG, which can achieve the aim of complete myocardial revascularization with a limited length of graft.
Cardiopulmonary Bypass ; Coronary Artery Bypass ; Coronary Disease ; Coronary Stenosis ; Follow-Up Studies ; Humans ; Incidence ; Myocardial Infarction ; Myocardial Revascularization* ; Perfusion ; Postoperative Complications ; Saphenous Vein ; Transplants ; Veins

Synovial sarcoma is an uncommon malignant mesenchymal tumor that occurs in the vicinity of the joints, bursae, and tendon sheaths. Typically the lesions are located in the extremities, especially in the lower extremities. They also occur in the abdominal and thoracic walls, but rarely in the head and neck. We experienced a case of synovial sarcoma of the rib in 17-year -old woman. We performed en bloc chest wall resection including the right second rib tumor, first and third ribs. The postoperative course was uneventful. She received chemotherapy because of a relapse of the tumor in sternum and both lung during follow-up.
Drug Therapy ; Extremities ; Female ; Follow-Up Studies ; Head ; Humans ; Joints ; Lower Extremity ; Lung ; Neck ; Recurrence ; Ribs* ; Sarcoma, Synovial* ; Sternum ; Tendons ; Thoracic Wall

Neuroendocrine tumor in thymus is rare and has poor prognosis due to frequent recurrence and distant metastasis. Approximately half of thymic carcinoids are hormonally active and Cushing's syndrome is seen in 33% of affected patients. Treatment of choice is surgical excision of tumor and role of chemotherapy and radiotherapy is controversal. We report 2 cases of thymic neuroendocrine carcinoma associated with Cushing's syndrome.
Carcinoid Tumor ; Carcinoma, Neuroendocrine ; Cushing Syndrome* ; Drug Therapy ; Humans ; Neoplasm Metastasis ; Neuroendocrine Tumors* ; Prognosis ; Radiotherapy ; Recurrence ; Thymus Gland ; Thymus Neoplasms