Levent Cansever

Prof. Dr. Levent Cansever


Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 February 2011 in European Journal of Cardio-Thoracic Surgery
Verified
Journal Article
Closed access
CKCelalettin Ibrahim Kocaturk
Celalettin Ibrahim Kocaturk
MGMehmet Zeki Gunluoglu
Mehmet Zeki Gunluoglu
LCLevent Cansever
Levent Cansever
ADAdalet Demir
Adalet Demir
UCUlas Cinar
Ulas Cinar
MBMehmet Ali Bedirhan
Mehmet Ali Bedirhan
The presence of synchronous multiple primary non-small-cell lung cancers (SMPLC) is a rare condition and the optimal treatment remains unclear. In this study, the survival of surgically treated SMPLC patients and the factors affecting survival were analyzed. Between 2001 and 2008, 26 consecutive patients diagnosed with SMPLC, who had all of their tumors resected, were retrospectively evaluated. Patients, who had bronchoalveolar carcinoma or carcinoid tumors and satellite nodules, were excluded. Prognostic factors were analyzed using univariate and multivariate analyses. The tumors were unilateral in 14 and bilateral in 12 patients. In total, 38 procedures were performed. A complete resection was achieved in 35 (92.1%) procedures. The in-hospital mortality rate was 7.6% (two patients). The overall 5-year survival rate was 49.7%, and the median survival time was 40 months. The 5-year survival rate was 40.6% for unilateral and 62.8% for bilateral SMPLC patients (p = 0.47). Histopathologic tumor type, N1 nodal disease, tumor (T) status, and older age did not influence survival. There was no survival disadvantage for patients, upon whom a sublobar resection had been performed. There was a trend toward poorer survival in patients upon whom a pneumonectomy had been performed (p = 0.12). The 3-year survival rate for patients, who received adjuvant chemotherapy and/or radiotherapy (66.7%), was better than other patients (56.3%). In the multivariate analysis, we found a trend toward poor survival in patients, who received a pneumonectomy, and a trend toward better survival in patients, who received adjuvant therapy (p = 0.05 and p = 0.06). The survival of SMPLC patients, who were treated surgically, was satisfactory. Pneumonectomy was a poor prognostic factor, whereas adjuvant therapy was a good prognostic factor.

26 June 2021 in Health Economics Review
Verified
Journal Article
Open access
PDF file
İÇİrfan Çiçin
İrfan Çiçin
EOErgun Oksuz
Ergun Oksuz
NKNuri Karadurmus
Nuri Karadurmus
SMSimten Malhan
Simten Malhan
MGMahmut Gumus
Mahmut Gumus
TSTurkish Respiratory Society
Turkish Respiratory Society
Background: This study was designed to estimate economic burden of lung cancer in Turkey from payer perspective based on expert panel opinion on practice patterns in clinical practice. Methods: In this cost of illness study, direct medical cost was calculated based on cost items related to outpatient visits, laboratory and radiological tests, hospitalizations/interventions, drug treatment, adverse events and metastasis. Indirect cost was calculated based on lost productivity due to early retirement, morbidity and premature death resulting from the illness, the value of lost productivity due to time spent by family caregivers and cost of formal caregivers. Results: Cost analysis revealed the total per patient annual direct medical cost for small cell lung cancer to be €8772), for non-small-cell lung cancer to be €10,167. Total annual direct medical cost was €497.9 million, total annual indirect medical cost was €1.1 billion and total economic burden of lung cancer was €1.6 billion. Hospitalization/interventions (41%) and indirect costs (68.6%) were the major cost drivers for total direct costs and the overall economic burden of lung cancer, respectively. Conclusions: Our findings indicate per patient direct medical costs of small cell lung cancer and non-small-cell lung cancer to be substantial and comparable, indicating the substantial economic burden of lung cancer in terms of both direct and indirect costs. Our findings indicate that hospitalization/interventions cost item and indirect costs were the major cost drivers for total direct costs and the overall economic burden of lung cancer, respectively. Our findings emphasize the potential role of improved cancer prevention and early diagnosis strategies, by enabling cost savings related to drug treatment and metastasis management cost items, in sustainability of cancer treatments.

22 July 2005 in The Thoracic and Cardiovascular Surgeon
Verified
Journal Article
Closed access
GHG. Haciibrahimoglu
G. Haciibrahimoglu
LCLevent Cansever
Levent Cansever
CKC. I. Kocaturk
C. I. Kocaturk
UAU. Aydogmus
U. Aydogmus
MBM. A. Bedirhan
M. A. Bedirhan
Purpose: Spontaneous hemopneumothorax is a rare disorder, occurring in 1 % to 12 % of patients with spontaneous pneumothorax. The present review was undertaken to emphasize the potential life-threatening condition of spontaneous hemopneumothorax and reassess the benefit of conservative treatment with chest tube drainage. Material and Methods: From 1997 to 2002, 291 cases of spontaneous pneumothorax were treated in our department. Of these, 9 (3.09 %) developed hemopneumothorax (> 400 ml). The clinical features of these patients and the results of conservative and surgical management were retrospectively reviewed. Results: Seven patients were treated conservatively and two required VATS and thoracotomy because of worsening clinical condition. The amount of aspirated blood ranged from 400 to 3700 ml (mean, 1533 ml). Six patients received a homologous blood transfusion. Conclusions: In conclusion, hemopneumothorax is a serious condition complicating spontaneous pneumothorax. Conservative treatment is adequate in most cases and should be performed if bleeding persists for less than 24 hours after chest tube placement.

20 May 2009 in The Thoracic and Cardiovascular Surgeon
Verified
Journal Article
Closed access
PDF file
MGM. Z. Gunluoglu
M. Z. Gunluoglu
LCLevent Cansever
Levent Cansever
ADA. Demir
A. Demir
CKC. Kocaturk
C. Kocaturk
HMH. Melek
H. Melek
MBM. A. Bedirhan
M. A. Bedirhan
Background: Due to its rarity there is no clear policy on the management of spontaneous pneumomediastinum (SPM). Methods: We treated 23 SPM patients between January 1 996 and November 2 006. There were 20 males and 3 females and their mean age was 27. Clinical records of the patients were collected and analyzed. Results: The most frequent symptoms were neck swelling (n = 20) and rhinolalia (n = 15). Onset of the symptoms was acute. A preceding factor was found in 19 (83 %) patients; these included vigorous cough, forced physical activity, vigorous sneezing and enormous efforts during spontaneous vaginal delivery. Chest X‐ray was sufficient to show mediastinal free air in 18 patients. Computerized chest tomography showed pneumomediastinum in all patients. Twenty patients were treated expectantly. Subcutaneous air drainage was needed to drain massive subcutaneous emphysema in three patients. Conclusions: Acute onset of typical symptoms, the existence of a preceding factor and the exclusion of other possible causes of pneumomediastinum with the help of CT are sufficient to make a diagnosis of SPM. A surgical intervention is generally not needed for the treatment of this entity.

31 December 2008 in Annals of Surgical Oncology
Verified
Journal Article
Closed access
PDF file
UAUmit Aydogmus
Umit Aydogmus
SOServet Ozdemir
Servet Ozdemir
LCLevent Cansever
Levent Cansever
YSYasar Sonmezoglu
Yasar Sonmezoglu
CKCelalettin Ibrahim Kocaturk
Celalettin Ibrahim Kocaturk
MBMehmet Ali Bedirhan
Mehmet Ali Bedirhan

19 April 2019 in General Thoracic and Cardiovascular Surgery
Verified
Journal Article
Closed access
PDF file
CSCelal Bugra Sezen
Celal Bugra Sezen
SBSalih Bilen
Salih Bilen
CKCem Emrah Kalafat
Cem Emrah Kalafat
LCLevent Cansever
Levent Cansever
YSYaşar Sonmezoglu
Yaşar Sonmezoglu
CKCelalettin Ibrahim Kocaturk
Celalettin Ibrahim Kocaturk