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Ann Thorac Surg 1997;63:1423-1427
© 1997 The Society of Thoracic Surgeons
Service de Chirurgie Thoracique, Hôpital du Haut-L
êque, Pessac, France
Accepted for publication November 14, 1996.
| Abstract |
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Methods. To determine outcome, risk factors, and the advisability of esophageal resection in the elderly, a single-institution retrospective review was performed of esophagectomy for cancer over a 14-year period. From January 1, 1980, to December 31, 1993, 540 patients underwent esophageal resection for esophageal cancer. These patients were divided into two groups: group 1, n = 89, patients 70 years of age or older; and group 2, n = 451, patients younger than 70 years of age. The two groups were compared according to preoperative risk factors, morbidity rate, mortality rate, mean stay in the hospital after operation, and long-term survival.
Results. Adenocarcinoma of the esophagogastric junction was the most common tumor in group 1 and was usually managed with a single incisional approach. There were no significant differences between the groups concerning morbidity (24.7% in group 1), mortality (7.8% in group 1), mean stay in the hospital (23.3 days in group 1), or long-term survival (59%, 23%, and 13% at 1, 3, and 5 years, respectively, in group 1).
Conclusions. These results suggest that esophagectomy can be performed in selected elderly patients without increasing morbidity or mortality and with long-term survival.
| Introduction |
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The diagnosis of esophageal cancer in a patient aged 70 years or older always raises the question of whether a major operation is indicated, given the known increased morbidity associated with operating on these frail patients [1]. However, the average life expectancy in France is now 72 years for men and 81 years for women. This cancer is found more and more frequently in patients over 70 years of age because of our aging population. Operative treatment still offers the longest and most comfortable survival for patients suffering from esophageal cancer [2]. Although some authors [3, 4] have reported a higher mortality rate in patients more than 70 years old, our practice seemed to show that results could be satisfactory without extra morbidity in selected patients. Thus, to study the results and to determine our selection factors for operative treatment of esophageal cancer in these patients, we performed a retrospective analysis of a single institution's cohort of 89 patients aged 70 years or older, operated on between January 1980 and December 1993. The results were then compared with those obtained in a series of 451 patients aged 70 years or less, operated on within the same period and according to the same principles.
For editorial comment, see page 1225.
| Patients and Methods |
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All data were stored on Medlog (Logi-Soft, Fontainbleau, France) software. Statistical analysis was performed using
2 tests or analysis of variance on the same software. Survival curves were constructed using the method of Kaplan and Meier, then compared by a log rank method. A p value less than 0.05 was considered significant.
| Patient Selection |
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Patients suffering from unstable coronary artery disease were treated and stabilized before operation, but patients aged 70 years or older who had an indication for coronary artery bypass grafting were excluded from an esophageal operation. The esophagectomy was performed on the same admission in all patients if the preoperative assessment was satisfactory. However, in group 2, 47 patients underwent preoperative chemotherapy and radiation therapy between January 1991 and October 1993. This preoperative treatment was given up after October 1993 because of disappointing preliminary results. None of the patients in group 1 (patients aged 70 years and older) received this treatment.
The philosophy of operative management was not modified during the study period, and it was the same for all surgeons. All surgical procedures were performed by experienced surgeons (L.C., J.F.V., J.B.J., J.D.). The operative approach was chosen according to the site of tumor, history of former thoracic diseases or interventions, and general status, and keeping in mind oncologic surgical principles, including adequate margins of resection (more than 5 cm from the tumor edge proximally). In patients over 70 years of age, our preferred approach for lower-third tumor was a left thoracolaparotomy. An isoperistaltic tube gastroplasty was performed using the technique we have described previously [5, 6]. A crushing of the pylorus was routinely performed. Anastomoses were performed with a two-layer, hand-sewn interrupted suture technique using an absorbable monofilament suture material (3-0), such as polydioxanone (PDS; Ethicon, Neuilly sur Seine, France). A nasogastric suction tube was passed through the anastomosis and left in place until the water-soluble contrast swallow. Patients were extubated postoperatively as soon as their central temperature and respiratory function permitted. Postoperatively, patients received parenteral feeding, and since 1985 most of them have also received enteral nutrition through a jejunostomy feeding tube. Low-dose jejunostomy feeding was initiated on postoperative day 2. A water-soluble contrast swallow was performed on day 7 before allowing oral feeding.
| Patients Aged 70 Years and Older |
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| Results |
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Histologic analysis found 33 squamous carcinomas (37.1%), 53 adenocarcinomas (59.6%), and 3 undifferentiated carcinomas (3%). These results and the histologic staging according to the Union Internationale Contre le Cancer 1987 are shown in Table 4
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Follow-up included all patients but 2, who were lost. The average follow-up of our series was 22 months. Sixty-eight patients (78.2%) have died, 1 patient is alive with tumor recurrence, and 16 (18.4%) are alive and healthy. The actuarial survival at 1, 3, and 5 years was 59.1%, 23.3%, and 13.3%, respectively.
| Patients Aged Less Than 70 Years |
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| Comparison of the Two Groups |
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2 = 0.10; p = 0.78) or mortality (
2 = 0.82; p = 0.53). The mean postoperative hospital stay was the same. Comparison of the survival curve between the groups showed no significant difference (p = 0.13).
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| Comment |
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The long-term survival in our series is similar to that found in other series [1, 7]. None of our patients aged 70 years or older had preoperative adjuvant treatment. In fact, we did not believe that such treatment was indicated for these already frail patients, given the lack of evidence for its efficacy so far [8]. We considered resection only in those patients suffering from a resectable tumor. The complexity of such an operation certainly increases morbidity, mainly because of the duration of the operation. We prefer to use a single-stage approach by left thoracolaparotomy in patients aged 70 years or older, provided that adequate tumor resection can be achieved. Our previous results reported in a series of 210 patients undergoing such an approach confirmed our choice of this method (5-year survival, 17% [9]). Thus, left thoracolaparotomy was the approach in 67.4% of the patients aged 70 years and older, whereas it was performed in 34.6% of the patients aged less than 70 years (see Table 3
). We have always tried to extubate the patient as soon as possible after operation once he or she was stable and had rewarmed. The low incidence of respiratory complications (6 patients, 6.7%) supports our policy. Caldwell and associates [10] reported a significant decrease of cardiovascular complications when the duration of postoperative mechanical ventilation was decreased after esophagectomy. Such a major operation justifies a cardiovascular and respiratory assessment to select patients. The pulmonary function tests were always satisfactory (forced expiratory volume in 1 second: range, 2,208 to 2,330 mL/s). The cardiovascular assessment often included echocardiography and an effort test. More than 20% of patients had lost more than 10% of their normal body weight when the disease was diagnosed. The delay before diagnosis was similar in both groups. This may be explained by the fact that many of our patients came from rural areas, where medical attention is sought less frequently than in urban areas. We always kept in mind the same oncologic principles of complete resectability of the tumor with mediastinal resection of lymph nodes by thoracotomy, whatever the patient's age. It has been shown that esophagectomy without thoracotomy does not reduce overall morbidity or respiratory complications [11, 12]. This was also reported by Naunheim and associates [4]: In patients aged 70 years and older, the transhiatal approach was responsible for the same morbidity as the transthoracic approach (morbidity = 18% and 19%, respectively). The long-term survival reported in that series was inferior to ours.
In conclusion, although patients more than 70 years old referred for operation have already been selected to a degree, it is important for the surgeon to assess the physiologic reserves and identify preoperative risk factors in these patients so that selection is optimal. After careful selection, we have been able to achieve equivalent results in 89 patients over 70 years of age and in 451 younger patients. These results confirm that these patients will benefit from operation if the surgeon adheres to the same oncologic surgical principles while trying to diminish the aggressivity of the procedure.
| Footnotes |
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| References |
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