Arda Kayhan
Marmara University
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Publication
Featured researches published by Arda Kayhan.
Asian Pacific Journal of Cancer Prevention | 2014
Arda Kayhan; Sibel Özkan Gürdal; Nilufer Ozaydin; Neslihan Cabioglu; Beyza Ozcinar; Erkin Aribal; Vahit Ozmen
BACKGROUND The Bahcesehir Breast Cancer Screening Project is the first organized population based breast cancer mammographic screening project in Turkey. The objective of this prospective observational study was to demonstrate the feasibility of a screening program in a developing country and to determine the appropriate age (40 or 50 years old) to start with screening in Turkish women. MATERIALS AND METHODS Between January 2009 to December 2010, a total of 3,758 women aged 40-69 years were recruited in this prospective study. Screening was conducted biannually, and five rounds were planned. After clinical breast examination (CBE), two-view mammograms were obtained. True positivity, false positivity, positive predictive values (PPV) according to ACR, cancer detection rate, minimal cancer detection rate, axillary node positivity and recall rate were calculated. Breast ultrasound and biopsy were performed in suspicious cases. RESULTS Breast biopsy was performed in 55 patients, and 18 cancers were detected in the first round. The overall cancer detection rate was 4.8 per 1,000 women. Most of the screened women (54%) and detected cancers (56%) were in women aged 40- 49. Ductal carcinoma in situ (DCIS) and stage I cancer and axillary node positivity rates were 22%, 61%, and 16.6%, respectively. The positive predictivity for biopsy was 32.7%, whereas the overall recall rate was 18.4 %. CONCLUSIONS Preliminary results of the study suggest that population based organized screening are feasible and age of onset of mammographic screening should be 40 years in Turkey.
The Journal of Breast Health | 2016
Ozgur Sarica; Arda Kayhan; Huseyin Cengiz Demirkurek; Aysenur Akyildiz Igdem
Liquid foreign material injection has been used as an early medical intervention since the end of nineteenth century for the augmentation of body shape. Nowadays, these types of procedures have been abandoned by health professionals due to late onset of serious complications. However, it is still misused by some subcultures such as bodybuilders, passive homosexuals, transsexuals, and patients with mental illness. This article discusses a male patient who injected himself with a large amount of sunflower oil, which became complicated by an inflammatory response-abscess formation and sclerosing lipogranuloma of breasts. The radiologic and pathologic signs of this entity are discussed with a review of the relevant literature. Lack of suspicion of this entity may cause a great delay in establishment of definitive diagnosis, giving rise to prominent morbidity and mortality. It is necessary to know the diagnosis and treatment of this phenomenon because illegal substances that cause factitial panniculitis are widely available on websites and threaten thousands of people, which is anecdotally referred in medical literature. Chronic or recurrent lesions of a bizarre or atypical morphology should alert the physician to this artificial phenomenon. Radiologic findings are most important criteria for diagnosis because self-injection is denied by the patient.
The Journal of Breast Health | 2017
Vahit Ozmen; Sibel Özkan Gürdal; Neslihan Cabioglu; Beyza Ozcinar; A. Nilufer Ozaydin; Arda Kayhan; Erkin Aribal; Cennet Sahin; Pinar Saip; Oguzhan Alagoz
OBJECTIVE We used the results from the first three screening rounds of Bahcesehir Mammography Screening Project (BMSP), a 10-year (2009-2019) and the first organized population-based screening program implemented in a county of Istanbul, Turkey, to assess the potential cost-effectiveness of a population-based mammography screening program in Turkey. MATERIALS AND METHODS Two screening strategies were compared: BMSP (includes three biennial screens for women between 40-69) and Turkish National Breast Cancer Registry Program (TNBCRP) which includes no organized population-based screening. Costs were estimated using direct data from the BMSP project and the reimbursement rates of Turkish Social Security Administration. The life-years saved by BMSP were estimated using the stage distribution observed with BMSP and TNBCRP. RESULTS A total of 67 women (out of 7234 screened women) were diagnosed with breast cancer in BMSP. The stage distribution for AJCC stages O, I, II, III, IV was 19.4%, 50.8%, 20.9%, 7.5%, 1.5% and 4.9%, 26.6%, 44.9%, 20.8%, 2.8% with BMSP and TNBCRP, respectively. The BMSP program is expected to save 279.46 life years over TNBCRP with an additional cost of
Diagnostic and interventional radiology | 2009
Ozgur Kilickesmez; Tan Cimilli; Ercan Inci; Arda Kayhan; Sibel Bayramoğlu; Neslihan Tasdelen; Nevzat Gürmen
677.171, which implies an incremental cost-effectiveness ratio (ICER) of
Marmara Medical Journal | 2008
Figen Palabıyık; Arda Kayhan; Tan Cimilli; Nurseli Toksoy; Sibel Bayramoğlu; Sema Aksoy
2.423 per saved life year. Since the ICER is smaller than the Gross Demostic Product (GDP) per capita in Turkey (
Journal of Global Oncology | 2018
Neslihan Cabıoğlu; S. Ozkan-Gurdal; Arda Kayhan; Nilufer Ozaydin; C. Şahin; Beyza Ozcinar; Erkin Aribal; Vahit Ozmen
10.515 in 2014), BMSP program is highly cost-effective and remains cost-effective in the sensitivity analysis. CONCLUSION Mammography screening may change the stage distribution of breast cancer in Turkey. Furthermore, an organized population-based screening program may be cost-effective in Turkey and in other developing countries. More research is needed to better estimate life-years saved with screening and further validate the findings of our study.
Journal of Clinical Oncology | 2017
Neslihan Cabioglu; Sibel Özkan Gürdal; Arda Kayhan; Nilufer Ozaydin; Erkin Aribal; Vahit Ozmen
Türk Radyoloji Seminerleri | 2014
Arda Kayhan; Erkin Aribal
Archive | 2014
Sibel Özkan Gürdal; Arda Kayhan; Gürsel Soybir
16. Ulusal Halk Sağlığı Kongresi | 2013
Gamze Varol Saraçoğlu; Sibel Özkan Gürdal; Arda Kayhan; Meltem Oznur; Eda Celik Guzel; Onur Sakalli; Gürsel Soybir