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Ann Thorac Surg 2005;80:1067-1072
© 2005 The Society of Thoracic Surgeons
a Department of Cardiovascular and Thoracic Surgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
b Department of Anesthesiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
Accepted for publication March 16, 2005.
* Address reprint requests to Dr Varma, B-8, New Faculty Quarters, Chitra Staff Quarters, Poonthi Road, Thiruvananthapuram, Kerala 695 011, India (Email: pkvarma{at}sctimst.ker.nic.in; varmapk{at}gmail.com).
| Abstract |
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METHODS: From 1985 to 2003, 60 patients underwent surgery for pulmonary aspergilloma at Sree Chitra Tirunal Institute for Medical Sciences and Technology.
RESULTS: The group consisted of 36 male patients and 24 female patients with a mean age of 42.7 ± 11.8 years. The most common indication for surgery was hemoptysis (93.3%). The common underlying lung diseases were tuberculosis (45%), bronchiectasis (28.3%), and lung abscess (11.6%). Fourteen patients (23%) had simple aspergilloma (SA) and 46 (77%) had complex aspergilloma (CA). The procedures performed were lobectomy (n = 55), pneumonectomy (n = 2), segmental resection (n = 2), and cavernoplasty (n = 2). One patient underwent bilateral lobectomy at 14 months interval. The operative mortality was 4.3% and 0% in CA and SA, respectively (p = 1.0). Major complications occurred in 26.1% patients of CA, whereas none occurred in SA (p = 0.052). The complications included bleeding (n = 2), prolonged air leak (n = 4), empyema (n = 4), repeated pneumothorax (n = 1), and wound dehiscence (n = 1). Three patients needed thoracoplasty. The mean follow-up period was 40 ± 24 months. The actuarial survival at 10 years was 78% and 92% for CA and SA, respectively. There was no recurrence of disease or hemoptysis.
CONCLUSIONS: Surgical resection of pulmonary aspergilloma prevents recurrence of hemoptysis. Complex aspergilloma resection was associated with low mortality but significant morbidity, whereas SA had no associated early mortality and morbidity. Long-term outcome is good for SA and satisfactory for CA.
| Introduction |
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| Patients and Methods |
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Diagnosis and Classification
The diagnosis was suspected on chest radiography in all the patients. In the initial part of the study, tomography (13.3%, n = 8) and more recently CT scan (86.7%, n = 52) had confirmed the classical picture of an intracavitary mass surrounded by air crescent. All aspergillomas were retrospectively classified based on medical imaging and operative findings as either simple aspergilloma (SA) or complex aspergilloma (CA), according to the description reported by Belcher and Plummer [7]. Simple aspergilloma had a thin-walled cavity with little or no surrounding parenchymal disease (Fig 1). In contrast, CA had a thick-walled cavity, surrounding parenchymal disease, and greater pleural thickening (Fig 2A and 2B). Immunologic tests were not done in any case. Aspergillus organisms were histologically confirmed on all resected specimens.
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Operative Preparation
Preoperative preparation of the patients included cessation of smoking, improvement of nutritional status, and a short course of antibiotics, if required. Antifungal agents were not used. All patients, including patients undergoing cavernoplasty, were operated on under general anesthesia. The lung isolation was ensured by the use of a double-lumen endobronchial tube. All patients received intermittent lumbar epidural buprenorphine 3 to 5 µg/kg in 7.5 mL of normal saline for postoperative analgesia and for ensuring active participation in postoperative chest physiotherapy.
Operative Technique
In all patients, the surgical procedure was performed through posterolateral thoracotomy. The pleural space was entered through the fifth space. Initially, minimal adhesiolysis was done to permit the placement of a small blade retractor; further adhesiolysis was done with electrocautery. The practice was to dissect at one place and then pack the dissected area with sponges and continue dissection at another place. It was observed that, once the entire lung was released this way, the oozing stopped. In case of posttuberculous sequel with cavity in the apex of the chest and dense fibrosis with adhesion to subclavian vessels, after quarantining the area of the lung, the cavity was opened, taking care to prevent spillage. After evacuating the content of the cavity and removing the diseased lobe, only a minimum amount of cavity wall was left on the surface of the subclavian vessels. In this way, major bleeding from injury to the subclavian vessels was avoided. The pulmonary vessels were ligated with silk tie and then transfixed with nonabsorbable suture. The lung was transected using vascular clamps through the relatively healthy lung and sealed by running fine polypropylene sutures. The policy was to underrun the area of major air leak with pledgetted fine suture. The bronchial stump was closed with two figure-of-eight stitches of polypropylene, and an extra stitch was taken only if air leak was present on water seal testing. However, stapler or sealant like fibrin glue was not used. Primary thoracoplasty or latissimus dorsi muscle flap for filling the dead space were not done in any case. Extrapleural dissection was also not performed. Two chest tubes, one anterior apical and the other posterior basal, were placed in all cases. In patients who underwent cavernoplasty, the cavity was incised and the fungus ball was removed, and the area of air leak was underrun with suture. Thereafter, the chest wall was closed after inserting two chest drains.
Postoperative Care
All patients were shifted to a dedicated thoracic surgery intensive care unit and were extubated after ensuring complete lung reexpansion and recovery from anesthesia. The majority of the patients were extubated within 2 to 6 hours. During the immediate postoperative period, continuous low suction in the range of 15 to 20 cm H2O was applied to the chest tube bottle in all cases. Postoperative analgesia by the epidural route was continued for a minimum of 48 hours, and the patients were given intensive chest physiotherapy. Bronchospic clearance of retained secretions was undertaken if required. Patients were shifted to the ward only if the air leak was minimal and chest radiograph showed satisfactory expansion of the ipsilateral lung.
Postoperative bleeding was considered excessive when total drainage in the first 24 hours exceeded 1 liter. Prolonged air leak was defined as any air leak lasting more than 10 days. Operative death was defined as any death occurring in the first 30 days or during the initial hospital admission. All operative deaths and death due to any other cause were included for survival statistical analysis.
Follow-Up
Follow-up data were completed from the case records; in addition, a letter was sent to all survivors operated on before 2002, requesting them to attend our outpatient department. The patients were evaluated by clinical history and physical examination by the first and second author. Chest radiographs, posteroanterior and lateral views, were evaluated. Patients operated on after 2002 were followed up at 6 months. Follow-up was completed in February 2004.
Statistical Analysis
Analysis was done using SPSS for Windows (version 11.0; SPSS, Chicago, Illinois) by a biostatistician. Continuous variable were expressed as mean ± SD, and proportions were compared with Fishers exact test. Survival probability was calculated by the Kaplan-Meier method, plotted at monthly intervals with the day of surgery as the starting point.
| Results |
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Postoperative Morbidity
Twelve complications developed (26.1%) in CA patients (Table 5), whereas none occurred in SA patients (p = 0.05). Major blood loss occurred in 2 patients, who required reexploration. Overall, mean postoperative blood loss was 340 ± 150 mL (range, 150 to 1,200 mL). Prolonged air leak existed in 4 cases, and 2 of them were reexplored; pnuemostasis was achieved with muscle pledgetted sutures in the one patient; the second patient required decortication. Four patients had empyema; in 3 of them thoracoplasty was required, and the fourth patient underwent decortication. One case each had repeated pneumothorax and wound dehiscence.
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| Comment |
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Indications for Surgery
Like other series, the most common indication for surgery was hemoptysis. In previous series, the incidence of hemoptysis ranged from 50% to 83% and was severe or recurrent in 10% [12]; the respective figures in our series were 93% and 8%. The bleeding usually occurs from bronchial arteries and is self-limiting. Extension of the mycotic process with parenchymal destruction may invade the chest wall, leading to erosion of the intercostal arteries and bleeding [13] and can be fatal [2]. The outcome of the patients treated conservatively for massive hemoptysis was poor; in one series, 4 of 10 patients who were not operated on died [14]. In our series, bronchial artery embolization was performed in 11 patients, and was successful in 10 patients. This modality was used to tide patients over the crisis and prepare the patient for surgery and not for permanent intention. As recurrent and fatal hemoptysis can occur in patients thus palliated, and the results of bronchial artery embolization are variable [11]; these patients underwent surgery during the same hospital admission. No patient was asymptomatic, as opposed to the 18% and 22% prevalence of asymptomatic patients reported by Jewkes and colleagues [2] and Babatasi and coworkers [11], respectively. This can be explained by the fact that our center is a tertiary referral center to which only symptomatic patients are referred for surgical options.
Surgical Technique, Complications, and Early Outcome
In our series, the commonest surgical procedure performed was lobectomy (90%). Lobectomy in PA was found to be difficult in view of extensive adhesions between the lung, pleura, diaphragm, and mediastinum. The fissure was often obliterated. Segmentectomy was done in 2 cases of SA with limited disease. Cavernoplasty was considered for poor-risk candidates based on spirometric data and CT scan findings. Of the 2 cavernoplasties performed, 1 patient died of respiratory failure whereas the other patient is alive after 72 months of the surgery in functional class III. Percutaneous cavernostomy may have been a better option in these patients as it carries less risk of postoperative respiratory failure. Pneumonectomy was performed in 2 casesin 1 patient with posttuberculous destroyed lung and in 1 patient with multiple PA involving multiple lobes. One patient is in functional class III after 184 months, and other patient is in functional class II after 12 months of surgery. Widespread disease, multiple unilateral aspergilloma, or destroyed lungs because of the primary underlying condition were the common indications for pneumonectomy in other reports [4]. Pneumonectomy was difficult in view of the extensive adhesions, mediastinal shift, and indurated hilar structures. However, in centers that often deal with posttuberculous destroyed lung, this procedure can be undertaken safely. In the present series, in 3 patients thoracoplasty was performed for empyema as a subsequent procedure2 after lobectomy and 1 after cavernoplasty. Decortication was required in another patient. The outcome after the secondary procedures was good without further mortality or morbidity.
Previous series [15] reported overall mortality rates of 22% and as high as 34% for CA. But recent reports showed significant reduction in morbidity and mortality [11, 1619]. The overall operative mortality rate in our series was 3.3%, death occurred only in CA (4.34%). In our series, the overall morbidity rate was 20%, which was similar to other series [20]. We attribute this to proper preoperative preparation of the patients, our experience in the operative management of posttuberculous complications, and aggressive postoperative chest physiotherapy.
Contrary to the earlier report [13], pleural space problems were minimal in our series, we believe that the reasons are (1) full mobilization of the lung through the transpleural route, (2) effective hemostasis, (3) lung resection through the healthy lung, (4) judicious use of crushing of the phrenic nerve, (5) aggressive postoperative chest physiotherapy, and (6) continuous low suction to keep the lung expanded. For similar reasons, the problems of bleeding and empyema were minimal, and bronchopleural fistula was not encountered.
Limitations
Selection bias could have occurred, as only patients who they thought would be benefited by surgery were referred by chest physicians for surgical options. As this was a retrospective study, cardioarrhythmic events were not analyzed.
In summary, we recommend aggressive surgical resection for pulmonary aspergilloma. Preoperative preparation of the patient, meticulous surgical technique, and postoperative care reduced the rate of complications, which was absent for simple aspergilloma. Complications still occurred in complex aspergilloma and were largely related to the underlying lung pathology; however, the overall long-term outcome was good.
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| Acknowledgments |
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| References |
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