Hadi Akay

Management of Esophageal Perforation

Abstract Despite recent advances in thoracic surgery, the management of esophageal perforation remains problematical and controversial. Thirty-one patients were treated for an esophageal perforation between 1986 and 1998. The esophageal perforation was iatrogenic in 25 cases, spontaneous in 2, traumatic in 2, and caused by a tumor and tuberculous lymphadenitis in 2 patients. There were 10 cervical, 19 thoracic, and 2 abdominal perforations. The interval from perforation to operation was less than 24 h in 12 patients and more than 24 h in 19 patients. The surgical procedures included a primary repair in 12 patients, a resection in 8, and conservative treatment with minor surgical approaches in 11. The mortality rate was 20% (4/20 patients) in the surgical treatment group and 45.5% (5/11 patients) in the conservative treatment with minor surgery group. The overall mortality was 29% (9/31 patients). The prognosis is thus concluded to depend on the cause and location of the perforation, the presence of underlying esophageal diseases, and the surgical procedure chosen.

Lung diseases due to environmental exposures to erionite and asbestos in Turkey

Asbestos deposits have been used locally by the rural inhabitants of Central and Southeastern Anatolia for domestic purposes for many years. Mineralogical analysis revealed that tremolite is the most prominent asbestos type found in the region. There is in addition another mineral fiber found particularly in three villages located in the Cappadocian region of Central Anatolia (zeolite villages). This is a non-asbestos mineral, which has been identified as the fibrous zeolite, erionite. This fiber is present in the volcanic tuffs, which are used as building stone. Hence, exposure to erionite fibers is always possible in the houses, annexes, and streets of the villages. It has been demonstrated that both asbestos and erionite cause a variety of benign and malignant chest diseases. Among the diseases, calcified pleural plaques (CPP) are the most frequently seen and may be used as an indicator of mineral fiber exposure. Asbestos and erionite exposure are the main causes of malignant mesotheliomas in Turkey. In zeolite villages malignant mesothelioma is responsible for more than 50% of the total deaths. A recent study showed that simian virus 40 is not a cofactor in the pathogenesis of environmental malignant mesothelioma in Turkey. An additional recent genetic-epidemiological study showed that there are some families, which are genetically predisposed to mesothelioma.

Transthoracic approach in surgical management of Morgagni hernia

OBJECTIVE Morgagni hernia is an uncommon type of diaphragmatic hernias. Numerous approaches have been described and, particularly the significance of laparatomy has been emphasized as an operative technique. We present our experience on patients with Morgagni hernia operated on via transthoracic approach in our department. MATERIALS AND METHODS Between January 1986 and March 2000, 16 patients with Morgagni hernia were operated in our department. Their ages ranged from 16 to 68 years (mean 51.5). Five (31.25%) patients were male, and 11 (68.75%) patients were female. Chest roentgenograms, thorax CT, barium enema roentgenographic studies were used as diagnostic utilities. Right posterolateral thoracotomy was performed in all patients. RESULTS Hernia sac was present in all cases. Exploration revealed omentum in hernia sac in eight patients (50%), colon and omentum in seven patients (44%), only colon in one patient (%6). Postoperative course was uneventful. The mean follow-up was 5.7 years. There was no recurrence or symptoms related to the operation. CONCLUSIONS We advocate transthoracic approach for surgical exposure as it provides wide exposure and easy repair of the hernia sac in Morgagni hernia.

Parenchyma-Preserving Surgery in the Management of Pulmonary Hydatid Cysts

Pulmonary hydatid cysts remain a significant health problem in endemic regions like Turkey. Here, we present our surgical experience in patients with pulmonary hydatid cysts. Between January 1985 and January 2001, 1118 operations were performed in 1032 patients (528 males, 504 females; mean age 32.7 years; range 1–87 years) with pulmonary hydatid cysts in our department. Posterolateral thoracotomy was performed in 1015 (98.3%), two-stage thoracotomy in 34 (3.3%), and median sternotomy in 17 (1.7%) patients. We preferred conservative surgical procedures. As a surgical procedure, cystotomy and capitonnage was performed in 626 (56%), cystotomy alone in 368 (33%), wedge resection in 81 (7%), enucleation in 29 (3%), and decortication in 11 (1%) patients. None of our patients were treated with anatomic resection. During surgery, 949 patients (92%) had unruptured and 83 patients (8%) had ruptured hydatid cyst. The morbidity ratio was 6.7%. Major complications were wound infection (2.3%), prolonged air leak (1.9%), atelectasis (1.2%), pleural effusion (0.8%), postoperative hemothorax (0.6%), and empyema (0.3%). Two patients (0.2%) died within the first month postoperatively. Mean follow-up was 31.2 months. Recurrence was detected in only 35 patients (3.3%). Treatment of pulmonary hydatid cyst is primarily surgical. Medical treatment is indicated for recurrent and multiple hydatid cysts postoperatively. Cystotomy alone, or cystotomy and capitonnage, as parenchyma-preserving surgery, is preferred. Radical surgery including pneumonectomy, lobectomy, and segmentectomy should be avoided.

Single-stage transthoracic approach for right lung and liver hydatid disease.

OBJECTIVE Human echinococcosis remains a serious health problem for the Mediterranean countries. Synchronous pulmonary and hepatic hydatid disease may occur in 4% to 25% of cases. Our experience on simultaneous surgical treatment of right lung and liver hydatid disease in patients was reviewed. METHODS Between 1990 and 2000, 48 patients (33 female patients and 15 male patients) with synchronous right lung and liver dome hydatid cysts were operated with a 1-stage procedure. RESULTS Six patients had previous surgical treatment of hepatic (n = 2) or pulmonary (n = 4) hydatid cyst. The pulmonary cysts were diagnosed with radiography in 18 patients and thoracic computed tomography scan in 30. The pulmonary cysts of 9 patients were bilateral. Seventy-five pulmonary cysts were seen in radiological examinations. The diagnosis of hepatic cysts was established with ultrasonography in 18 patients and upper abdominal computed tomography in 30. The total number of hepatic cysts was 48. In cases with pulmonary cysts, cystotomy and capitonnage were performed in 32 patients, only cystotomy was done in 14 patients, and wedge resection was performed in 2. Liver cysts were approached to transdiaphragmatically after the lung cysts had been dealt with and were managed with evacuation of the cysts. In the remaining cases, marsupialization (n = 2), pericystectomy (n = 1), and enucleation (n = 1) were performed. Major postoperative complications were hemorrhage (n = 1) and biliocutaneous fistula (n = 1). Hepatic recurrence was seen in 3 patients (6.2%) and pulmonary recurrence in 1 (2.1%). CONCLUSION Transthoracic approach is a useful and a safe surgical management of both pulmonary and upper surface of hepatic hydatid cysts.

Management of Recurrent Malignant Pleural Effusion with Chemical Pleurodesis

PurposeMalignant pleural effusion is a common complication of primary and metastatic pleural malignancies. It is usually managed by drainage and pleurodesis, but there is no consensus as to the best method of pleurodesis. We compared the effectiveness, side effects, and cost of different chemical pleurodesis agents used in patients with malignant pleural effusion.MethodsBetween January 1990 and December 2001, 108 patients with malignant pleural effusion underwent chemical pleurodesis in our department. Thoracoscopy was performed in 64 patients (59%), a minithoracotomy in 18 (17%), tube thoracostomy in 11 (10%), and a small-bore catheter was inserted in 15 (14%). Talc was used in 68 (63%) patients, tetracycline in 26 (24%), and bleomycin in 14 (13%). Talc was instilled by insufflation during surgery after drainage, whereas tetracycline and bleomycin were instilled via tube or catheter for pleural analgesia.ResultsTalc resulted in significantly earlier tube and catheter removal, after an average 4.1 days versus 5.1 days after tetracyline, and 6.3 days after bleomycin (P = 0.026, P = 0.001, respectively). A significantly lower reaccumulation ratio in 90 days was achieved by the talc group, with nine (13.2%) patients, representing an 86.8% success rate, than in the tetracyline and bleomycin groups, with seven (26.7%) and five (35.7%) patients, respectively, representing 73.8% and 64.3% success rates (P = 0.04).ConclusionsTalc resulted in the earliest expansion, minimal drainage, and the earliest tube and catheter removal.

Chest wall reconstruction with autologas rib grafts in dogs and report of a clinic case

OBJECTIVE Nowadays, in chest wall reconstruction prosthetic materials are generally used. However, the rejections of prosthetic materials and infections frequently occur in chest wall reconstruction, especially after radiotherapy or resection that is performed due to infections. METHODS We used 10 mongrel dogs and performed resections of 8 cm diameter on their chest walls. In the reconstruction of these defects, in five of the subjects, we used two free rib grafts with periosteum to be resected from the contralateral side and in other five subjects, we used free rib grafts without periosteum. After this experimental study, sternal resection was performed in a 24-year-old man because of sternal osteomyelitis. First to obtain rib grafts with periosteum, partial resection was performed to 5th, 7th, and 9th ribs of the lateral left side. After, total sternal resection, end to end anastomosis was performed to the 2nd, 3rd, 4th and 5th anterior ends of the ribs. RESULTS Autogeneous rib grafts were found to be enough to provide chest wall stabilization. CONCLUSIONS The contralateral autogeneous free rib grafts can successfully be used in reconstruction of wide chest wall defects. This method is found to be effective and sufficient to prevent infection, rejection and to provide stabilization.

Prognostic significance of flow cytometric DNA analysis in patients with malignant pleural mesothelioma

Malignant pleural mesothelioma (MPM) due to environmental exposure to asbestos and erionite is a relatively common cancer in Turkey. In this study, we investigated the value of flow cytometric (FCM) DNA analysis and other prognostic factors such as age and etiologic factor in the patients with MPM, treated with surgery+/-combination chemotherapy+/-radiotherapy. A total of 40 patients with a median age of 50 (range 30-68) were included in the study. Twenty-nine patients had asbestos exposure in etiology, while 11 had fibrous zeolite (erionite). Paraffin-embedded tumor specimens were studied by FCM for DNA analysis. Twelve patients (30%) had aneuploid tumors and 28 (70%) had diploid ones. Mean S-phase fraction (SPF; %) was 9.1+/-1.1 and proliferation index (PI, SPF+G2/M phase; %) was 11.3+/-0.9. While the median overall survival (OS) was 10+/-2 months (6-14; 95% CI), 1-year survival rate was 45.2%. Only PI was found to be statistically significant for OS in univariate analysis (P=0.013). PI was also found to be an independent prognostic factor for all patients (P=0.035). Aneuploidy was significantly higher in erionite group compared with asbestos group. Male predominance and poor survival were also prominent in erionite group, though not statistically significant. In conclusion, PI is an independent prognostic factor for patients with MPM and the biologic features of the disease may show differences with respect to different etiologies.

Surgical treatment of peripheral lung cancer adherent to the parietal pleura

OBJECTIVES The objective of this paper is to assess the results of surgical treatment retrospectively in a consecutive series of 85 patients with peripheral non-small cell lung cancer (NSCLC) invading parietal pleura and chest wall. METHODS From 1994 to 1998, of the 572 patients having pulmonary resection for NSCLC, 29 patients with neoplasm involving the parietal pleura (group I) and 56 with that invading the chest wall (group II) underwent resection. RESULTS The operative mortality rate was 3.4% in group I and 1.8% in group II. In groups I and II, pathologic N status was N0 in 20 (69%) cases, N1 in five (17%), N2 in four (13.8%) and 44 (78.6%), seven (12.5%), five (8.9%), respectively. An incomplete resection (R1) was performed in two (6.9%) patients in group I and seven (12.5%) in group II. Postoperative radiotherapy was carried out in 18 patients in group I and 46 in group II. Systemic chemotherapy was also administered in seven patients in group I and eight in group II. There was a significant difference in adjuvant therapy between the groups (P<0.05). Two patients (R1) in group I (7.4%) and 12 patients (seven patients R1+5 R0) in group II (24%) had local recurrence. There was no significant difference in local recurrence between the groups (P=12). Follow-up was completed in 79 cases (28 in group I and 51 in group II). Median survival for groups I and II were 27+/-6 and 16+/-4.6 months, respectively. Five-year survival was longer in group I than in group II (33 vs. 14%), but there was no significant difference (P=13). CONCLUSIONS We found similar survival rates for extrapleural resection in limited parietal pleura invasion and chest wall resection in exceeded-beyond-parietal pleura invasion. The completeness of resection is important in both groups.

FIBRINOLYTIC SYSTEM IN PLASMA AND PLEURAL FLUID IN MALIGNANT PLEURAL MESOTHELIOMA

The two major fibrinolytic activators, urokinase-type plasminogen activator (u-PA) and tissue-type plasminogen activator (t-PA) may play role in tumor spread and metastasis. Malign pleural mesothelioma (MPM) is a kind of tumor with predominantly local invasion and low incidence of distant metastasis. In this study, u-PA, t-PA and PA activator-1 (PAI-1) antigen and activity were measured in plasma and pleural fluid samples from patients with MPM, lung cancer and benign effusion. When compared to the control group, in MPM group, plasma u-PA and t-PA antigen levels were higher, but plasma u-PA and t-PA activity were comparable. PAI-1 antigen was also higher in MPM group. These findings were in contrast to the lung cancer group, in which both activity and immunologic measurement of u-PA and t-PA were higher, but PAI-1 antigen was similar as compared to the control group. It is concluded that excess t-PA and u-PA are balanced in complexes with PAI-1 in MPM, whereas the amount of PAI-1 in plasma is insufficient to overcome the elevated t-PA and u-PA, in lung cancer. Based on these findings, it may be suggested that the balanced fibrinolytic system is responsible for the low incidence of distant metastasis in MPM.