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Biomedical subjects

J F Regnard

Publications and source records attributed to J F Regnard.

At least 37 records · Page 2Linked to original sources

[Surgical video-thoracoscopy].

Surgical video thoracoscopy represents a new surgical approach to thoracic disease. Its objective is to limit thoracotomy trauma to the pleural wall and at the same time to eliminate the consequences of post-thoracotomy pain and post-operative respiratory dysfunction. There are certain indications which are already accepted as the gold standard, others still require validation and the inverse that certain interventions will probably be excluded from the domain of video thoracoscopy with acquired experience. The best indications are: the treatment of spontaneous pneumothorax in a young person, lung biopsy, the excision of peripheral parenchymal nodules of uncertain aetiology, the diagnostic approach to mediastinal adenopathy notably nodes which are inferiorly situated and inaccessible to mediastinoscopy or anterior mediastinotomy, the debridement of purulent pleurisy and/or haemothorax, the initial exploration before thoracotomy of a pulmonary tumour accompanied by a pleural effusion which may be minimal or irregularities of the parietal pleura, a thoracic sympathectomy, pleural symphysis for pleural tumour pathology, the pleuropericardial fenestration in cases of double pathology, pleural and pericardial requiring both a diagnostic approach and symphysis.

Humans↗

Surgical treatment of hepatic and pulmonary metastases from colorectal cancers.

BACKGROUND: Selected patients with double hepatic and pulmonary metastases from colorectal cancer may benefit from operation. METHODS: From 1970 to 1995, 239 patients underwent operation for resection of pulmonary metastases from colorectal cancer at two French surgical centers. Among these patients, 43 (18%) had previously undergone complete resection of hepatic metastases and constitute the subject of this retrospective study. RESULTS: The median interval time between hepatic and pulmonary resections was 18 months. Two pneumonectomies, 5 lobectomies, 3 segmentectomies, 6 wedge resections, and 27 metastasectomies were performed. No postoperative mortality was observed. Two patients had major postoperative complications. Seven patients (16%) underwent subsequent pulmonary resection for recurrences. Twenty-one patients were still alive, 14 free of disease. The median survival from pulmonary resection was 19 months and the 5-year probability of survival was 11%. Prethoracotomy carcinoembryonic antigen blood levels and the number of pulmonary resection were found to be significant prognostic factors; the interval time between hepatic and pulmonary resection (> 36 months) was borderline significant (p = 0.06). CONCLUSIONS: Selected patients with combined hepatic and pulmonary metastases from colorectal cancer should be considered for surgical resection. Patients with normal prethoracotomy carcinoembryonic antigen levels and late metachronous pulmonary metastasis, appear to be the best surgical candidates.

Adenocarcinoma↗

Bronchioloalveolar lung carcinoma: results of surgical treatment and prognostic factors.

STUDY DESIGN: To determine the long-term results after surgical treatment of bronchioloalveolar lung carcinoma (BALC) and to identify prognostic factors. PATIENTS AND METHODS: A retrospective study of 70 patients (49 men, 21 women), mean age 61+/-10 years, was carried out. Their carcinomas were classified into three clinicopathologic types: nodular or tumoral, pneumonic, and diffuse types. All the diagnosed BALC cases were reviewed and were classified into histologic types: mucinous, nonmucinous (including fibrotic center), and mixed tumors. Univariate and multivariate analyses were carried out. RESULTS: The nodular or tumoral type was identified in 42 patients, pneumonic in 21, and diffuse in seven. Histologically, there were 36 mucinous, 25 nonmucinous, and nine mixed tumors. Resection was complete in 61 instances (87%) and incomplete in five. The 5-year survival rate was 34% in patients with curative resections. Five prognostic factors were identified by univariate analysis, but in multivariate analysis, only three factors remained significant: the absence of symptoms, the TNM stage, and completeness of resection. Thirty-six patients with curative resection (59%) developed recurrences (in the lung in 26 patients; mediastinal lymph nodes, four; distant metastases, nine). The frequency of recurrence was significantly greater in patients with pneumonic-type BALC than in nodular or tumoral types (p<0.01), and pulmonary recurrences were significantly more frequent in pneumonic than in tumoral types (p<0.02). CONCLUSIONS: This study confirmed that the overall prognosis of BALC is not significantly different from that of the other non-small cell lung cancers. We found that the lungs are the predominant site of recurrence in BALC, especially in the pneumonic types. The complete surgical resection of localized BALC offers the best chances of long-term survival.

Adenocarcinoma, Bronchiolo-Alveolar↗

[Current indications for early surgery in stage III non-small-cell bronchial cancer].

In a number of cases, surgery is carried out as the initial procedure in Stage III non small cell carcinoma. For those with Stage IIIA surgery is the initial procedure performed by practically all teams for Stage T3 chest wall and T2 bronchial stump in patients who have non evidence of N2. In Stage IIIA N2 which is histologically confirmed by mediastinoscopy or thoracoscopy surgery is the initial procedure in certain cases if the local conditions are "favourable". The majority of surgical teams however prefer to operate after neo-adjuvant therapy whose long term efficacy still remains to be shown in a formal study. Stage IIIB consists of a very heterogeneous group in whom surgery can be carried out as an initial procedure in a limited number of cases such as involvement of the left auricle, the proximal pulmonary artery, the superior vena cava, the oesophageal muscle as well as at the carina. In all the other cases of IIIB on the CT scanner or MRI scanner where the cancer seems to be non resectable, or resectable in a poor clinical situation, one would envisage surgery only after a re-evaluation secondary to neo-adjuvant therapy.

Carcinoma, Non-Small-Cell Lung↗

Reverse ventilation-perfusion mismatch in lung cancer suggests intrapulmonary functional shunting.

We report on a patient with squamous cell cancer of the left lung who was first considered ineligible for surgery because of severe hypoxemia. A ventilation-perfusion scan showed "reverse" ventilation-perfusion mismatch, with 20% of the total lung perfusion going to the left lung, which showed no ventilation with radioactive aerosols. This pattern suggested that the hypoxemia was due to intrapulmonary functional shunting and could therefore be improved by surgical resection of the tumor. Balloon occlusion of the left pulmonary artery resulted in an immediate rise in PaO2, indicating a right-to-left intrapulmonary shunt. After left pneumonectomy, PaO2 levels were normal. This patient provides an example of dysregulation of the pulmonary hypoxic vasoconstriction response in a non-small cell lung cancer. Lung cancer patients with severe hypoxemia should undergo ventilation-perfusion scanning to look for reverse ventilation-perfusion mismatch suggestive of intrapulmonary functional shunting.

Aerosols↗

[Pulmonary resections for cancer in the octogenarian].

UNLABELLED: More and more elderly subjects are offered for pulmonary resection. The object of this study was to review the results of excision for cancer in octogenarians. PATIENTS: 51 consecutive patients (44 men, 7 women) with a mean age of 82 years (80-91) were operated on. 31 lobectomies, 2 bilobectomies, 13 pneumonectomies, 1 segmental resection and 4 exploratory thoracotomies were carried out. 17 tumours were classed as stage I, 15 as stage II and 15 as stage III. RESULTS: 38 patients (75%) had uncomplicated post-operative periods; the predicted factors for complication were the existence of weight loss and alteration of respiratory function. 2 patients (4%) died in the post-operative phase. Neither the type of operation, the staging or the existence of cardiovascular dysfunction had any influence on the post-operative phase. The level of the survival at 3 and 5 years was 39% and 16% respectively. 30% of the late deaths were related to intercurrent events. CONCLUSIONS: Pulmonary excision may be envisaged in an octogenarian who is in good physical and intellectual state with a limited tumour. This surgery in general is applied to a population which probably only marginally consists of octogenarians but the results here justify their inclusion in the indications for selection.

Aged↗

Results of re-resection for recurrent thymomas.

BACKGROUND: The treatment of recurrent thymomas remains controversial. PATIENTS: The place for re-resection was retrospectively studied in 28 consecutive patients operated on during the last 40 years. The initial Masaoka staging of the thymoma was stage I, 4; stage II, 8; stage III, 11; and stage IVa, 3. Postoperatively, 14 have had radiation therapy, 1 chemotherapy, and 13 no adjuvant treatment. Seven patients had development of recurrences, 15 had pleuropulmonary metastases, 5 had both, and 1 had thoracotomy scar recurrence. Nineteen patients had a complete resection and 9 an incomplete one. RESULTS: Most local recurrences appeared after resection of stage I or II thymomas. On the other hand, in patients with stage III or IV thymomas pleural or pulmonary metastases mainly developed. No local recurrence occurred in patients who initially received postoperative radiation therapy. Five-year and 10-year survival rates were 51% and 43%, respectively, for the overall population. Among the 19 patients with complete resection, only 3 patients had a subsequent recurrence; 1 of them could be reoperated on and is still alive and free of disease. CONCLUSIONS: Thymoma recurrences often appear as a locoregional rather than a hematogenous spread. Reresection can be recommended in selected patients.

Adult↗

Lung metastases of renal cell carcinoma: results of surgical resection.

OBJECTIVE: The research was designed to evaluate the results of surgical resection of renal lung metastases. METHODS: Between 1960 and 1994, 50 consecutive patients underwent resection for pulmonary metastases from renal cell carcinoma. Mean age was 59 years (range: 40-78 years). Mean time between nephrectomy and pulmonary resection was 3 years (range: 0-18 years). Nineteen patients had solitary metastase, 13 multiple unilateral, and 18 bilateral. Wedge excision was performed in 28 patients, segmentectomy in 3, lobectomy in 17, sleeve lobectomy in 1, pneumonectomy in 5 and biopsy in 3. Twelve patients had repeat resection for recurrent metastases. RESULTS: The resection was complete in 45 patients. Three patients also had a complete resection of limited extra-pulmonary disease. There was one postoperative death and 3 complications. Mean follow-up was 42 months without loss of follow-up. The cause of death was always metastatic recurrent disease. Five-year survival in complete resection was 44%. Only one long survivor was observed in the case of incomplete resection in a patient who had a complete response after adjuvant immunotherapy. Five-year survival for the 12 patients with repeat resections was similar to the overall survival rate (42%). CONCLUSIONS: Resection of renal lung metastases is a safe and effective treatment. No factor influenced the 5-year survival in this series except the complete resection. Extra-pulmonary metastases does not contra-indicate pulmonary resection. In selected patients, repeat resection for recurrent disease is warranted.

Actuarial Analysis↗

Leiomyosarcoma of the superior vena cava.

Leiomyosarcoma of the superior vena cava is exceptional. A case in a 52-year-old man is described. A treatment by means of neoadjuvant chemotherapy, operation, and adjuvant radiotherapy was performed. This aggressive treatment has permitted the patient to obtain a relatively long survival with a good quality of life.

Chemotherapy, Adjuvant↗

Immediate and long-term results after surgical treatment of primary spontaneous pneumothorax by VATS.

BACKGROUND: Video-assisted thoracic surgery has recently evolved as a viable alternative to thoracotomy for spontaneous pneumothorax. METHODS: A series of 163 patients with primary spontaneous pneumothorax were treated by video-assisted thoracic surgery. Seventy patients were treated for a recurrent episode, 64 patients for a persistent primary spontaneous pneumothorax, 24 patients for a contralateral episode, and 5 patients for a bilateral primary spontaneous pneumothorax. Stapling of bullae with an Endo-GIA stapler (Auto-Suture, Elencourt, France) was performed in 90% of the cases and parietal pleural abrasion was performed in each case. RESULTS: One revisional lateral limited thoracotomy was required for bleeding. Six patients had a prolonged air leak; 2 of them were reoperated on by lateral limited thoracotomy. Two patients have had an incomplete reexpansion of the lung and required a reoperation. The duration of hospitalization was 6.9 +/- 3 days. With a mean follow-up of 24.5 months, three recurrences requiring a reoperation occurred; 3 other patients had a partial recurrence and healed by rest without drainage. The mean time to return to the occupational activity of the patients was 42 +/- 34 days. These results were compared with those of a previous series of 87 patients operated on by lateral limited thoracotomy. CONCLUSIONS: With the development of surgical technique and video equipment, video-assisted thoracic surgery will probably become the treatment of choice of primary spontaneous pneumothorax.

Absenteeism↗

Prognostic factors and long-term results after thymoma resection: a series of 307 patients.

Three hundred seven cases of patients who underwent operation for thymoma (196 of whom had myasthenia gravis) were analyzed to assess the prognostic values of Masaoka clinical staging, completeness of resection, histologic classification, history of myasthenia gravis, and postoperative radiotherapy. According to the Masaoka staging system, 135 thymomas were stage I, 70 were stage II, 83 were stage III, and 19 were stage IV. According to the Verley and Hollmann histologic classification system, 67 thymomas were type 1, 77 were type 2, 139 were type 3, and 24 were type 4. Two hundred sixty patients underwent complete resection, 30 underwent incomplete resection, and 17 underwent biopsy. Postoperative radiotherapy was performed mainly in cases of invasive or metastatic thymoma. Mean follow-up was 8 years; eight patients were unavailable for follow-up. The overall 10- and 15-year survivals were 67% and 57%, respectively. In univariate analysis, three prognostic factors were established: completeness of resection, Masaoka clinical staging, and histologic classification. Furthermore, among patients with stage III thymomas, survival was significantly higher for patients with complete resection than for patients with incomplete resection (p < 0.001). Completeness of resection should therefore be taken into account in clinical-pathologic staging. We did not find any significant difference with respect to disease-free survival between patients who had postoperative radiotherapy and those who did not. In multivariate analysis, the sole significant prognostic factor was completeness of resection. On the basis of these findings, a new clinical-pathologic staging system is proposed.

Adolescent↗

Results and prognostic factors in resections of primary tracheal tumors: a multicenter retrospective study. The French Society of Cardiovascular Surgery.

To determine long-term survival and prognostic factors, 208 patients with primary tracheal tumors were evaluated in a retrospective multicenter study including 26 centers. Ninety-four patients had squamous cell carcinoma, four had adenocarcinoma, 65 had adenoid cystic carcinoma, and 45 patients had miscellaneous tumors. The following resections were performed: tracheal resection with primary anastomosis, 165; carinal resection, 24; and laryngotracheal resection, 19. Postoperative mortality rate was 10.5% and correlated with the length of the resection, the need for a laryngeal release, the type of resection, and the histologic type of the cancer. Fifty-nine percent of patients with tracheal cancer and 43% of patients with adenoid cystic carcinomas had postoperative radiotherapy. The 5- and 10-year survivals, respectively, were 73% and 57% for adenoid cystic carcinomas and 47% and 36% for tracheal cancers (p < 0.05). Among patients with tracheal cancers, survival was significantly longer for those with complete resections than for those with incomplete resections. On the other hand, the presence of positive lymph nodes did not seem to decrease survival. Postoperative radiotherapy increased survival only in the case of incompletely resected tracheal cancers. Long-term prognosis was worsened by the occurrence of second primary malignancies in patients with tracheal cancers and by the occurrence of late pulmonary metastases in patients with adenoid cystic carcinomas.

Adenocarcinoma↗

[Results of surgical treatment of lung metastases from colorectal cancers].

OBJECTIVE: The aim of this work was to determine the long term results and the prognostic factors after surgical resection of pulmonary metastases from colorectal cancers. METHODS: Clinical status after surgery and survival were studied in 101 consecutive patients undergoing lung resection for pulmonary metastases from colorectal carcinoma between 1970 and 1993. Prognostic factors were evaluated according to surgical design. Mean interval between colon resection and lung resection was 44 months. Fifty-nine patients had a solitary lesion, 17 had multiple unilateral lesions and 25 multiple bilateral lesions. Eighteen patients had undergone previous surgery for localized extrapulmonary metastases. A wedge resection was performed in 47 patients, lobectomy or bilobectomy in 40, pneumonectomy in 11 and biopsy in 3. RESULTS: There was no postoperative mortality and 5-year survival in complete resection was 21%; all patients with incomplete resection or biopsy died within 3 years. Significant prognostic factors were: complete resection, metachronous disease (vs synchronous metastases) and absence of lymph node involvement. The extent of the colorectal disease and the number of resected metastases did not influence prognosis. Survival for patients with resected extrapulmonary disease was not significantly different as compared with patients with only pulmonary metastases. Eleven patients had repeat pulmonary resections, 6 of these patients are currently alive, 3 of them more than 3 years after the second pulmonary resection. CONCLUSIONS: We conclude that resection of colorectal lung metastases is safe and effective, that resectable extrapulmonary disease does not contra-indicate pulmonary resection and that repeat thoracotomy is warranted in selected patients with recurrent lung metastases.

Adult↗

[Endo- and exo-bronchial schwannoma treated by resection-anastomosis of the left bronchial stump].

Bronchial schwannomas are rare tumours. We report a case of an endo and exobronchial schwannoma which presented with dyspnoea and left pulmonary atelectasis. This was treated by complete resection of the tumour with a resection and anastomosis of the left bronchial stump flush with the lobar bifurcation. This tumour is most often benign and a conservative approach should be taken each time that this is permissible anatomically.

Adult↗

Utility of C-reactive protein measurements for empyema diagnosis after pneumonectomy.

Serum C-reactive protein (CRP) levels were studied serially during the postoperative period in 151 consecutive patients who underwent pneumonectomy. Virtually all patients who had a simple postoperative course (115 of 120), as well as 9 patients who had a bronchial infection of the remaining lung, 3 with a pulmonary embolus, and 2 who suffered postoperative bleeding requiring reoperation, demonstrated a similar postoperative evolution in their CRP values: a rapid postoperative rise until a peak or a plateau (mean peak value, 132 +/- 25 mg/L) was reached within 3 to 6 days, followed by a progressive decline to a value of less than 75 mg/L on day 9, and less than 50 mg/L on day 12. Conversely, all 12 patients who suffered empyema postoperatively, as well as 3 patients with bacterial pneumonia, 1 patient with chylothorax, and 1 patient with inflammatory pericarditis, demonstrated either a markedly persistent elevation in their CRP values or a secondary rise in the levels which exceeded 100 mg/L. Because of the high sensitivity (100%) and specificity (91.4%) of the CRP levels in detecting postpneumonectomy empyema, we recommend the routine use of this measure. Furthermore, a low CRP value after pneumonectomy (less than 50 mg/L) may help in deciding whether to confidently discharge a patient from the hospital in the absence of empyema. The negative predictive value of this method was found to be 100%.

Aged↗

Preoperative carcinoembryonic antigen level as a prognostic indicator in resected primary lung cancer.

The aim of this study was to evaluate the prognostic significance of elevated preoperative carcinoembryonic antigen (CEA) levels in cases of resected primary lung cancer. Between 1985 and 1989, 152 patients with tumors and CEA levels above 10 ng/mL underwent operation. One hundred twenty-five of them underwent resection of their tumors and the other 27 underwent exploratory thoracotomy only. Fifty-two percent of cancers were adenocarcinomas and 33% were epidermoid. Forty-two resected tumors were classified as stage I, 29 as stage II, 45 as stage IIIa, 7 as stage IIIb, and 2 as stage IV. The 3-year actuarial survival rate was 54% for patients with stage I tumors, 28% for those with stage II, 18% for those with stage IIIa, 44% for those with stage IIIb, and 0% for those with stage IV tumors. The 5 year actuarial survival was 40% for those with stage I tumors, 28% for those with stage II, 7% for those with stage IIIa, and 0% for those with stage IIIb tumors. Preoperative CEA levels increased from stage I to stage IIIa (p < 0.05). However, based on preoperative CEA levels we were not able to predict resectability, because levels were not significantly different between stage IIIa and exploratory thoracotomy-only groups. Adenocarcinoma was not significantly associated with higher CEA levels than was epidermoid, except in stage IIIa disease (p < 0.05). We found a critical unfavorable level of prognostic significance at 30 ng/mL.(ABSTRACT TRUNCATED AT 250 WORDS)

Adenocarcinoma↗