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Management of the solitary pulmonary nodule: role of thoracoscopy in diagnosis and therapy.

OBJECTIVES: The solitary pulmonary nodule remains a common clinical problem. The essential question is whether the lesion is malignant or not. This discussion presents the clinical practice and looks at the problem. DESIGN: Didactic. SETTING: Academic tertiary-care hospital. PATIENTS: Prospective thoracic database. INTERVENTIONS: Minimally invasive technique. RESULTS: The workup and treatment of the solitary pulmonary nodule is presented with particular emphasis on the role of minimally invasive techniques. A small single-institution series is referenced. CONCLUSIONS: The approach is safe and highly effective in diagnosing and often in treating solitary pulmonary nodules.

Carcinoma, Non-Small-Cell Lung↗

Thoracoscopy or CT-guided biopsy for residual intrathoracic masses after treatment of lymphoma.

BACKGROUND: An intrathoracic mass persists after completion of treatment in 20% of the patients treated for Hodgkin's disease (HD) or non-Hodgkin's lymphoma (NHL). Gallium scan and positron emission tomography allow for diagnosis in most cases. However, in some patients, a pathologic examination of the residual mass (RM) is required. The aim of this study was to evaluate the results of a thoracoscopic approach for intrathoracic RM, as compared with image-guided biopsies. PATIENTS AND METHODS: From 1996 to 1998, 29 consecutive patients treated for NLH (n = 11) or HD (n = 18) were referred either to radiology (group R; n = 8) or to surgery (group S; n = 21) for biopsy of an intrathoracic RM. There were 13 male and 16 female patients ranging in age from 15 to 56 years (mean, 32 years). The reason for a biopsy was the inability to determine the nature of the RM by means of radiologic examination or scintigraphy. Biopsy was defined as successful when (1) residual lymphoma was found in the specimen, or (2) benign tissue was found and the patient remained disease-free after a minimal follow-up period of 12 months. A biopsy was defined as a failure when a local recurrence occurred in a patient with a diagnosis of benign lesion. RESULTS: No significant procedure-related complications occurred in either group. The mean follow-up was 26 months (range, 13 to 72 months). In group R, residual lymphoma was found in only one patient. In group S, residual lymphoma was found in seven patients (p = 0.5). In the seven patients of group R with a diagnosis of benign mediastinal lesion, two patients had a local recurrence and one had a recurrence within the abdomen. In the 15 patients of group S in whom no residual disease was found, 1 patient had an intrathoracic recurrence (p = 0.5) while 2 patients had recurrence in a remote site. CONCLUSION: Despite the limited number of patients in this series, results suggest that a thoracoscopic approach yields better data than image-guided biopsies.

Adolescent↗

An Audit of medical thoracoscopy and talc poudrage for pneumothorax prevention in advanced COPD.

OBJECTIVES: To prospectively study all patients with COPD and spontaneous pneumothorax (SP) who underwent thoracoscopic talc poudrage (TP) under local anesthesia to determine its efficacy and safety in recurrence prevention. METHODS: Data on clinical measurements, complications, duration of chest tube drainage, length of hospital stay, and outcome were collected. RESULTS: Forty-one patients (38 men and 3 women) with a mean (+/- SD) age of 70.7 +/- 7.2 years were treated. All patients had COPD, with a mean FEV(1) of 41 +/- 14% predicted. The majority of SPs measured 20 to 50% in size, and 34% were recurrent. Three grams of talc were insufflated into the pleural cavity without complications. Thirteen patients (32%) complained of pain, 5 (12%) developed fever, 27 (66%) had subcutaneous emphysema, and 7 (17%) had prolonged air leaks. Postoperative chest tube drainage and hospital stay were 4 and 5 days, respectively. Success was 95% after a median follow-up of 35 months. Four patients with FEV(1) of < 40% predicted died within 30 days of the procedure, yielding a mortality rate of 10%. FEV(1) (in liters), FEV(1) (in % predicted), and ischemic heart disease were risk factors that influenced early mortality. CONCLUSION: Thoracoscopic TP is effective for pneumothorax prevention and can be performed with acceptable mortality in patients with advanced COPD.

Aged↗

Thoracoscopy: technique and results in eighteen patients with pleural effusion.

Eighteen patients with pleural effusion were examined. Nine patients had malignant neoplasm and in one the pleura was diffusely involved. Nine patients had pleural effusion of inflammatory origin. One of these was due to tuberculosis, one to trichinosis and the other seven were nonspecific. Thoracotomy in three of these seven failed to add additional information. All patients tolerated pneumothorax well with equilibration of pleural space and atmospheric pressure.

Biopsy↗

Thoracoscopy. A safe, accurate diagnostic procedure using the rigid thoracoscope and local anesthesia.

A thoracoscopic examination was performed in 41 patients under local anesthesia in the lateral decubitus position. Prior thoracocentesis (38 patients) and blind biopsy with an Abrams' needle (32 patients) had been nondiagnostic. The initial nine patients were examined with the flexible fiberoptic bronchoscope, yielding a diagnostic accuracy of 56 percent (five cases). This technique was discontinued when two patients had normal findings on biopsies, despite the visual observation of later diagnosed carcinoma. Subsequent thoracoscopic procedures were performed with a rigid 11-mm single-puncture thoracoscope (Storz), which was diagnostic in 28 (88 percent) of the remaining 32 patients. A hemothorax (400 ml) was the only potentially serious complication. Twelve patients were prospectively monitored during the thoracoscopic procedure for changes in cardiac rhythm and oxygen saturation. Sinus tachycardia was the only arrhythmia observed. The mean fall in oxygen saturation was 1.4 percent. We conclude that thoracoscopic examination with the rigid thoracoscope is diagnostically superior to the fiberoptic bronchoscope and is a safe procedure which can be performed under local anesthesia.

Anesthesia, Local↗

Video-assisted thoracoscopy versus open thoracotomy for spontaneous pneumothorax.

This retrospective study was designed to compare the contribution of the video-assisted thoracoscopic surgery (VATS) and open thoracotomy in the management of spontaneous pneumothorax (SP). The medical records of 100 patients with recurring or persisting (SP) treated were reviewed. The patients were divided into two groups: group I treated by thoracotomy while in group II (VATS) was used. There were 96 men and 6 women aged from 16 to 75 years. Indications for operation and sex distribution were comparable. The mean age for group I was 35 years and for group II was 45 years. Hospital stay was identical in both groups. The amount of narcotic requirements was lesser in group II than in group I as well as the postoperative respiratory dysfunction. There have been no recurrence to date (mean follow-up 6 years for the group I and 3 years for the group II). VATS have been shown to produce results comparable to those obtained following open thoracotomy with reduction of postoperative pain, respiratory dysfunction, catabolic response to trauma and decrease in wound related complications. VATS is a valid alternative to open thoracotomy for primary (SP) but it should be used with caution for the management of secondary pneumothorax.

Adolescent↗

Thoracoscopy.

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Anesthesia↗

Mediastinoscopy, thoracoscopy and left anterior mediastinotomy in the diagnosis of N2 non small cell lung cancer.

The preoperative diagnosis of the involvement of the N2 lymph nodes is very important in patients with NSCLC for the most appropriate treatment. The classical diagnostic techniques for mediastinal exploration, mediastinoscopy and left anterior mediastinotomy, have been recently integrated by videothoracoscopy. FromJanuary 1993 to April 1994 186 patients with NSCLC suitable for surgery, were observed in our Department. 18 patients (9%) had CT evidence of N2 disease. In 10 cases the sites of the nodal enlargement were the right paratracheal station (#2 according to Naruke) and the right tracheobronchial station (#4), in 4 the subcarinal station (#7), in 2 the subaortic (#5) and in the remaining 2 cases the paraaortic station (#6). 14 mediastinoscopies were performed to investigate the stations 2,4 and 7,2 videothoracoscopies for station 5 and 2 left anterior mediastinotomies for station 6. The histological diagnosis was obtained in all cases without intraoperative or postoperative complications. Because the sequence chemotherapy-surgery seems to obtain the best results in the treatment of N2 disease the preoperative diagnosis of nodal involvement is of outstanding importance. Until recently mediastinoscopy and anterior left mediastinotomy were considered the standard techniques to explore mediastinum, now also videothoracoscopy has been introduced. In our experience, the integration of all the above techniques allowed a complete study of each suspect N2 site. Particularly the videothoracoscopy is very useful to safely biopsy under direct vision the aortic window lymph nodes.

Biopsy↗

[Pulmonary hyalinizing granuloma diagnosed by thoracoscopy].

A 36-year-old woman was examined by our hospital for pulmonary coin shadows in both lungs, as disclosed on chest X-ray films. She had no subjective complaints other than allergic rhinitis, but exhibited hypergam-maglobulinemia, particularly in IgE. Inhalative allergen tests were positive for three types of allergens, but no autoimmune disease was detected. Although transbronchial and percutaneous fine needle biopsies failed to obtain enough specimens because of the wandering shadow a thoracoscopic biopsy was effective because of the subpleural location of the target lesions. The histologic findings were consistent with pulmonary hyalinizing granuloma, with extensive, hyalinized lamellar collagen bundles arranged haphazardly in the central area. Infiltration by lymphocytes and plasma cells, together with the destruction of bronchiolar and vessel walls, were observed in the marginal areas. No amyloid deposits or lymphocytic monoclonality were observed in the lesion. Twenty-five months after the biopsy, the patient's clinical and radiographic data had not changed.

Adult↗