Education and Specialization
2003 - 2009: Gazi University Faculty of Medicine (Master's Degree)
2010 - 2015: Samsun Training and Research Hospital, General Surgery Residency

Experience
2016 - 2017: Samsun Çarşamba State Hospital, General Surgery Specialist
2015 - 2016: Muş Varto State Hospital, General Surgery Specialist
2010 - 2015: Samsun Training and Research Hospital, Research Assistant
2009 - 2010: Samsun Ladik State Hospital, General Practitioner

Professional Memberships
Turkish Association of Surgery (UCD)
Turkish Society for Metabolic and Bariatric Surgery (BMCD)
Turkish Obesity Association

1.Yildirim K, Karabicak İ, Ulu EK, Aktimur R, Gursel MF, Malazgirt Z. Does Neutrophil-lymphocyte ratio correlate with the improvement of hepatosteatosis after laparoscopic sleeve gastrectomy?. Obes Facts. 2022 Aug 30. doi: 10.1159/000526654.
2.Kadir Yildirim, Ilhan Karabicak, Mahmut Fikret Gursel, Zafer Malazgirt. Surgical Treatment of Acute Cholecystitis in Patients over 80 Years: 10-Year Experience. Journal of Surgery. Vol. 10, No. 1, 2022, pp. 40-43. doi: 10.11648/j.js.20221001.18.
3.Z Malazgirt , K Yildirim , I Karabicak ², M F Gursel , A Acikgoz , H Ozturk. Retrospective analysis of open preperitoneal mesh repair of complex inguinal hernias. Hernia. 2022 Aug;26(4):1121-1130. doi: 10.1007/s10029-022-02595-w. Epub 2022 Apr 5.
4.Kadir Yildirim, llhan Karabicak, Mahmut Fikret Gursel, Bahadir Ozturk, Zafer Malazgirt. Hepatic portal venous gas does not show the severity of intestinal ischaemia. Journal Of Pakistan Medical Association. 2022. doi.org/10.47391/JPMA.4915.
5.Kesicioglu T, Yildirim K, Yuruker S, Karabicak I, Koc Z, Erzurumlu K, Malazgirt Z. Three-year outcome after anterior component separation repair of giant ventral hernias: A retrospective analysis of the original technique without mesh. Asian J Surg. 2022 May;45(5):1117-1121. doi: 10.1016/j.asjsur.2021.08.017. Epub 2021 Sep 7.
6.Murat Guzel, Recep Aktimur, Kadir Yıldırım, Sude Hatun Aktimur, Mehmet Hakan Taşkın, Mehmet Cihat Demir,Mehmet Derya Demirağ. The evaluation of ENA-78 and fibrinogen levels for the differential diagnosis of familial Mediterranean fever and acute appendicitis. Journal of Laboratory Medicine. 2019. doi.org/10.1515/labmed-2018-0146.
7.R Aktimur, C Kirkil, K Yildirim, N Kutluer. Enhanced recovery after surgery (ERAS) in one-anastomosis gastric bypass surgery: a matched-cohort study. Surg Obes Relat Dis. 2018 Dec;14(12):1850-1856.
8.Yildirim K, Colak E, Aktimur R, Gun S, Taskin MH, Nigdelioglu A, Aktimur SH, Karagöz F, Ozlem N. Clinical Value of CXCL5 for Determining of Colorectal Cancer. Asian Pac J Cancer Prev. 2018 Sep 26;19(9):2481-2484.
8.Colak E, Ozlem N, Kucuk GO, Aktimur R, Kesmer S, Yildirim K, (2015). Prospective randomised trial of mesh fixation with absorbable versus nonabsorbable tacker in ventral incisional hernia repair. Int J Clin Exp Med 2015:15;8(11):21611-6.
9.Colak E, Ozan Kucuk G, Yildirim K, Kesmer S, Erdem D, (2015). 9. Is resection indicated in gastric cancer deemed curable preoperatively but found to be advanced intraoperatively? J BUON 2015;20(5):1186-92.
10.Colak E, Kement M, Ozlem N, Mutlu T, Yildirim K, Gurer A, Aktimur R, (2013). A comparison of nonabsorbable polymeric clips and endoloop ligatures for the closure of the appendicular stump in laparoscopic appendectomy: a prospective, randomized study. Surg Laparosc Endosc Percutan Tech 2013 Jun;23(3):255-8.
11.Aktimur R, Cetinkunar S, Yildirim K, Ozdas S, Sude Hatun Aktimur SH, Colak E, Guzel H, Demirag MD, Ozlem N, (2014). Comparison of the outcomes of watchful waiting and surgery in ≥80-year-old comorbid and minimally symptomatic inguinal hernia patients. Turkish Journal of Geriatrics 2014;17(4):338-344.
12.Colak E, Ozlem N, Kesmer S, Yildirim K, (2013). A rare inguinal mass: Round ligament leiomyoma. Int J Surg Case Rep 2013;4(7):577-8. 6. Colak E, Ikinci A, Kucuk GO, Kesmer S, Yildirim K, (2015). Giant fibroepithelial polyp of the perineum: Giant fibroepithelial polyp. Int J Surg Case Rep. 2015;17:126-7.
13.Aktimur R, Guzel K, Cetinkunar S, Yildirim K, Colak E, (2016). Prospective randomized comparison of single-incision laparoscopic cholecystectomy with new facilitator maneuver vs. conventional four-port. Ulus Cerrahi Derg 2016 32 (1):23-29.
14.Colak E, Kucuk GO, Yildirim K, Ozturk O, (2015). The Diagnostic Value of Sonographic Findings in Axillary Lymphadenopathy. Journal of Family Medicine and Health Care 2015; 1(2): 21-3.
15.R. Aktimur, S. Cetinkunar, K. Yildirim, S. H. Aktimur, M. Ugurlucan,N. Ozlem, (2015). Neutrophil- to- lymphocyte ratio as a diagnostic biomarker for the diagnosis of acute mesenteric ischemia. Eur J Trauma Emerg Surg 2015.
16.Recep Aktimur, Suleyman Cetinkunar, Kadir Yildirim, Sabri Ozdas, Sude Hatun Aktimur, Ali Kagan Gokakin, (2015). Mean platelet volume is a significant biomarker in the differential diagnosis of acute appendicitis. Inflammation & Cell Signaling 2015.
17.Recep Aktimur, Süleyman Cetinkunar, Kadir Yıldırım, Eylem Odabaşı, Ömer Alıcı,Adil Nigdelioğlu, Nuraydın ozlem, (2015). Initial experience with laparoscopic gastrectomy in a low-volume center.Dicle Medical Journal2015.
18.Kadir Yildirim, Recep Aktimur, Gultekin Ozan Kucuk, Suleyman Cetinkunar, Nuraydin Ozlem, (2014). Unusual Hernia Content. Gazi Medial Journal 2014; 25: 151- 152.
19.Süleyman Çetinkünar, Recep Aktimur, Faik Yaylak, Yılmaz Polat, Kadir Yıldırım, (2014). The Comparison of Laparoscopicand Conventional Surgery for Colorectal Cancers: Evaluation of the Initial Experience. Eur J Endosc Laparosc Surg 2014;1(3):114-119.
20.Recep Aktimur, Dilek Kıymaz, Kübra Gümüş, Kadir Yıldırım, Süleyman Çetinkünar, Nuraydın Özlem, (2016). Experience and knowledge level of female health care professionals in Samsun province regarding puerperal mastitis. Ulus Cerrahi Derg 2016; 32: 261-26.
21.Kadir Yildirim, Recep Aktimur, Gultekin Ozan Kucuk, Suleyman Cetinkunar, Nuraydin Ozlem, (2015). Meckel’s diverticulitis presenting with early abcess formation in femoral region: A clue for determining content of femoral hernia. J. Exp. Clin. Med., 2015; 32(3): 129-131.
22.Onur Ozturk, Bektas Murat Yalcin, Mustafa Unal, Kadir Yildirim and Nuraydin Ozlem, (2015). Sexual dysfunction among patients having undergone colostomy and its relationship with Self-Esteem. Journal of Family Medicine & Community Health 2015.
23.Gulsah Elbuken, Recep Aktimur, Kadir Yildirim, Sude Hatun Aktimur, Mehmet Derya Demirag, Aysu Basak Ozbalci, Mustafa Bakirtas, Banu Kirtiloglu, Nuraydın Ozlem, (2015). Pre-opereative Parathormone Levels are Correlated with Mean Diameter of Parathyroid Adenoma and Pre-operatıve Serum Calcium and Alkaline Phosphatase Levels. Medscience.
24.Recep Aktimur, Suleyman Cetinkunar, Kadir Yıldırım, (2016). Turkish surgeons’ experiences and perception about single-incision laparoscopic surgery. Ulus Cerrahi Derg 2016; 32: 97-102.
25.Elif ÇOLAK, Kadir YILDIRIM, Nuraydın ÖZLEM, (2015). Çok Sayıda Jilet Yutan Mahkûm Hastanın Tedavisi. Turkiye Klinikleri J Case Rep 2015;23(2):158-61.
26.Özlem Yersal, Süleyman Çetinkünar, Recep Aktimur, Mehmet Aziret, Sabri Özdaş, Hasan Erdem, Kadir Yildirim, (2017).Neutrophil/Lymphocyte and Platelet/Lymphocyte Ratios are Not Different among Breast Cancer Subtypes.2017 Aug 27;18(8):2227- 2231.