Graduated from Gazi University Faculty of Medicine, Prof. Dr. Sezai Leventoğlu received his specialization from the General Surgery Department of the same university. prof. Dr. Sezai Leventoğlu is a faculty member at Gazi University, Faculty of Medicine, Department of General Surgery. On top of his general surgery specialty, he added a very important specification such as colorectal surgery by working in an important center abroad. He reflected this knowledge and experience to his own university upon his return. prof. Dr. Sezai Leventoğlu is the consultant of units such as Stomatherapy Unit, Proctology Unit, Anorectal Neurophysiology Unit. He gained national and international prestige in the field of colorectal surgery and colon cancer, especially with the patient series and clinical research articles he created in these units, and he was invited to panels and conferences.
Prof. Leventoğlu teaches "Colorectal and pelvic floor surgery anatomy", "Benign diseases of the anorectal region", "Precancerous colonic lesions" and "Pelvic Floor Diseases" to Term IV English and Turkish medical students. He has been involved as an instructor in the colonoscopy-endoscopy certification for general surgeons who have been referred to the General Surgery clinic of Gazi University Faculty of Medicine since 2008 by the Turkish Surgical Society. He worked as an assistant editor in the Turkish Journal of Colon and Rectal Diseases, the official publication of the Turkish Colon and Rectal Surgery Association, and in the Gazi Medical Journal, the official publication of Gazi University Faculty of Medicine.
Dr. Sezai Leventoğlu worked at Columbia University-New York Presbyterian Hospital, Colon and Rectal Surgery Department in the United States in 2007. At this center, Dr. He participated in Laparoscopic colorectal surgery and pelvic floor surgery operations with RL Whelan. Apart from the days of surgery, also in the colonoscopy laboratory and in the anorectal physiology laboratory, Dr. He actively worked together with Whelan. He received training on the application and interpretation of anal manometer with endoanal USG. In October 2008, he participated in the Endoanal /rectal Ultrasonography course organized by IASGO in Istanbul and became certified. Dr., who is a member of the Turkish Colon and Rectal Surgery Association. Leventoğlu takes part as an instructor in the selective anorectal diseases course, anorectal physiology course, robotic/laparoscopic colorectal surgery courses, which are regularly conducted by TKRCD 3-4 times a year.
in 2009, he was sent as an observer to the Colon and Rectal Surgery Department of Cleveland Clinic Foundation, Digestive Disease Center, by the Turkish Colon and Rectal Surgery Association in the United States. At this center, Dr. He observed Laparoscopic Colorectal Surgery and Pelvic Floor Surgery operations at the Colorectal Surgery Center led by Feza Remzi. During his stay, he participated in Laparoscopic Colorectal Surgery cadaver and live animal courses and became certified by taking "Standard Laparoscopic Colon and Rectum Surgery, Transanal endoscopic microsurgery (Jul), Single port laparoscopic surgery (SILS)" trainings.
in 2010, he went to the “Transanal Endoscopic Operation (TEO)” course held in Barcelona and received the TEO instructor certificate. Following his return to the country, he has been working as an instructor in the organization of TEO courses for surgeons interested in this subject by Turkish Colon Rectal Surgery.
in 2011, he received training in robotic colorectal surgery practices in Strasbourg and became certified in robotic surgery.
Since 2008, he has been taking part in the endoscopy-colonoscopy training courses of surgeons assigned by the Turkish Surgical Association on quarterly periods at the Surgical Endoscopy-Proctology unit of Gazi University Faculty of Medicine as an instructor.
Since 2008, he has been working as an assistant editor in the Journal Colon and Rectal Diseases, which is the official publication of the Turkish Colon and Rectal Surgery Association.
October 2016, a total of 300 citations (citations) have been made to his publications, including 30 in textbooks and 270 in international articles. Dec.300 citations have been made to his publications.
He is the editor of the Turkish Colon and Rectal Surgery Association's first and only book titled Selective Diseases of the Anorectal Region published in 2011 in Turkey. there are chapters about benign and malignant colorectal diseases in more than 20 domestic and foreign books.
Science Citation Index (SCI) - Journal Citation Reports in the journals that constitute the source of the articles published in the years 2006-2015, he received the "Citation Award" by the Rector of Gazi University due to the references to his work.
He is a member of Turkish Society of Colon and Rectal Surgery, European Society of Colorectal Surgery (ESCP), The American Society of Colon and Rectal Surgeons (ASCRS), Turkish Surgical Association, National Association of Endoscopic Laparoscopic Surgery.
His areas of particular interest are colon and rectal surgery, proctology, laparoscopic/robotic colorectal surgery, transanal endoscopic operations. Dr. Leventoğlu is currently working as a consultant (consultant) of the Endoscopy-Proctology unit and Stomatotherapy unit at the General Surgery clinic of the Faculty of Medicine of Gazi University.
Comparison of the classic Limberg flap and modified Limberg flap in the treatment of pilonidal sinus disease: a retrospective analysis of 416 patients.
Akin M, Leventoglu S, Mentes BB, Bostanci H, Gokbayir H, Kilic K, Ozdemir E, Ferahkose Z.
Surg Today. 2010 Aug;40(8):757-62. Epub 2010 Jul 30.
PMID:20676861
[PubMed - indexed for MEDLINE]
Colonic stricture following conservative treatment of a colonoscopic perforation.
Akin M, Ege B, Akin FE, Leventoglu S, Kurukahvecioglu O, Yusifzade K, Mentes BB.
Endoscopy. 2008 Sep;40 Suppl 2:E89. Epub 2008 Mar 20. No abstract available.
PMID:18633902
[PubMed - indexed for MEDLINE]
Free PMC Article Free full text Retrorectal tumors: a case series.
Menteş BB, Kurukahvecioğlu O, Ege B, Karamercan A, Leventoğlu S, Yazicioğlu O, Oğuz M.
Turk J Gastroenterol. 2008 Mar;19(1):40-4.
PMID:18386239
[PubMed - indexed for MEDLINE]
Haemorrhoidectomy with electrocautery or ultrashears and stapled haemorrhoidopexy.
Leventoğlu S, Menteş BB, Akin M, Oğuz M.
ANZ J Surg. 2008 May;78(5):389-93.
PMID:18380739
[PubMed - indexed for MEDLINE]
Keyhole deformity: a case series.
Yüksel O, Bostanci H, Leventoğlu S, Sahin TT, Menteş BB.
J Gastrointest Surg. 2008 Jun;12(6):1110-4. Epub 2008 Jan 23.
PMID:18213502
[PubMed - indexed for MEDLINE]
Fine-tuning of the extent of lateral internal sphincterotomy: spasm-controlled vs. up to the fissure apex.
Menteş BB, Güner MK, Leventoglu S, Akyürek N.
Dis Colon Rectum. 2008 Jan;51(1):128-33. Epub 2007 Dec 18.
PMID:18085337
[PubMed - indexed for MEDLINE]
Transperineal rectocele repair with polyglycolic acid mesh: a case series.
Leventoğlu S, Menteş BB, Akin M, Karen M, Karamercan A, Oğuz M.
Dis Colon Rectum. 2007 Dec;50(12):2085-92; discussion 2092-5. Epub 2007 Nov 30.
PMID:18049839
[PubMed - indexed for MEDLINE]
Retrorectal hemangiopericytoma: a case report.
Leventoglu S, Menteş BB, Kurukahvecioğlu O, Oğuz M, Barit G, Uluoğlu O.
Acta Chir Belg. 2007 Jul-Aug;107(4):438-41.
PMID:17966543
[PubMed - indexed for MEDLINE]
Results of lateral internal sphincterotomy for chronic anal fissure with particular reference to quality of life.
Menteş BB, Tezcaner T, Yilmaz U, Leventoğlu S, Oguz M.
Dis Colon Rectum. 2006 Jul;49(7):1045-51.
PMID:16598404
[PubMed - indexed for MEDLINE]
Elastic one-stage cutting seton for the treatment of high anal fistulas: preliminary results.
Mentes BB, Oktemer S, Tezcaner T, Azili C, Leventoğlu S, Oğuz M.
Tech Coloproctol. 2004 Nov;8(3):159-62.
PMID:15654522
[PubMed - indexed for MEDLINE]
Extent of lateral internal sphincterotomy: up to the dentate line or up to the fissure apex?
Menteş BB, Ege B, Leventoglu S, Oguz M, Karadag A.
Dis Colon Rectum. 2005 Feb;48(2):365-70.
PMID:15711861
[PubMed - indexed for MEDLINE]
Modified Limberg transposition flap for sacrococcygeal pilonidal sinus.
Mentes BB, Leventoglu S, Cihan A, Tatlicioglu E, Akin M, Oguz M.
Surg Today. 2004;34(5):419-23.
PMID:15108080
[PubMed - indexed for MEDLINE]
Intradermal methylene blue injection for the treatment of intractable idiopathic pruritus ani: results of 30 cases.
Mentes BB, Akin M, Leventoglu S, Gultekin FA, Oguz M.
Tech Coloproctol. 2004 Mar;8(1):11-4.
PMID:15057582
[PubMed - indexed for MEDLINE]
Modified Limberg flap reconstruction compares favourably with primary repair for pilonidal sinus surgery.
Cihan A, Mentes BB, Tatlicioglu E, Ozmen S, Leventoglu S, Ucan BH.
ANZ J Surg. 2004 Apr;74(4):238-42.
PMID:15043735
[PubMed - indexed for MEDLINE]
Comparison of botulinum toxin injection and lateral internal sphincterotomy for the treatment of chronic anal fissure.
Menteş BB, Irkörücü O, Akin M, Leventoğlu S, Tatlicioğlu E.
Dis Colon Rectum. 2003 Feb;46(2):232-7.
PMID:12576897
[PubMed - indexed for MEDLINE]
Relationship between method of anastomosis and anastomotic failure after right hemicolectomy and ileocaecal resection: an international snapshot audit
COLORECTAL DISEASE
Volume: 19
Pages: O296-O311
DOI: 10.1111/codi.13646
Published: AUG 2017
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories: Gastroenterology & Hepatology; Surgery
Document Information
Language: English
Cited References in Web of Science Core Collection: 15
Times Cited in Web of Science Core Collection: 3
Surgical Treatment of Anal Stenosis with Diamond Flap Anoplasty Performed in a Calibrated Fashio
DISEASES OF THE COLON & RECTUM
Volume: 59
Pages: 230-235
DOI: 10.1097/DCR.0000000000000530
Published: MAR 2016
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories: Gastroenterology & Hepatology; Surgery
Document Information
Language: English
Cited References in Web of Science Core Collection: 14
Anal Canal Duplication in Adults: Report of Five Cases
INTERNATIONAL SURGERY
Volume: 101
Pages: 20-23
DOI: 10.9738/INTSURG-D-15-00083.1
Published: JAN-FEB 2016
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
Cited References in Web of Science Core Collection: 11
A Prospective, Multicentered Study to Assess Social Adjustment in Patients With an Intestinal Stoma in Turkey
OSTOMY WOUND MANAGEMENT
Volume: 61
Pages: 16-29
Published: OCT 2015
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
Accession Number: WOS:000367159100001
PubMed ID: 26479123
Cited References in Web of Science Core Collection: 41
Hybrid seton for the treatment of high anal fistulas: results of 128 consecutive patients
TECHNIQUES IN COLOPROCTOLOGY
Volume: 18
Pages: 187-193
DOI: 10.1007/s10151-013-1021-z
Published: FEB 2014
Document Type: Article; Proceedings Paper
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories: Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 23633241
Cited References in Web of Science Core Collection: 40
Times Cited in Web of Science Core Collection: 3
Effect of colchicine on experimental acetic acid induced colitis
TURKISH JOURNAL OF BIOCHEMISTRY-TURK BIYOKIMYA DERGISI
Volume: 39
Pages: 63-69
DOI: 10.5505/tjb.2014.49354
Published: 2014
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Biochemistry & Molecular Biology
Web of Science Categories: Biochemistry & Molecular Biology
Document Information
Language: English
Cited References in Web of Science Core Collection: 39
Treatment for horseshoe fistula with the modified Hanley procedure using a hybrid seton: results of 21 cases
TECHNIQUES IN COLOPROCTOLOGY
Volume: 17
Pages: 411-417
DOI: 10.1007/s10151-012-0952-0
Published: AUG 2013
Document Type: Article; Proceedings Paper
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories: Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 23207716
Cited References in Web of Science Core Collection: 28
Times Cited in Web of Science Core Collection: 2
Primary leiomyosarcoma of the thyroid
JOURNAL OF THE KOREAN SURGICAL SOCIETY
Volume: 85
Pages: 43-46
DOI: 10.4174/jkss.2013.85.1.43
Published: JUL 2013
Document Type: Article
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
PubMed ID: 23833760
Cited References in Web of Science Core Collection: 10
Times Cited in Web of Science Core Collection: 3
Comparison of the classic limberg flap and modified limberg flap in the treatment of pilonidal sinus disease: A retrospective analysis of 416 patients
SURGERY TODAY
Volume: 40
Pages: 757-762
DOI: 10.1007/s00595-008-4098-7
Published: AUG 2010
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
PubMed ID: 20676861
Cited References in Web of Science Core Collection: 25
Times Cited in Web of Science Core Collection: 36
Torsion of the primary epiploic appendagitis: a case series and review of the literature
AMERICAN JOURNAL OF SURGERY
Volume: 199
Pages: 453-458
DOI: 10.1016/j.amjsurg.2009.02.004
Published: APR 2010
Document Type: Review
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
PubMed ID: 19520357
Cited References in Web of Science Core Collection: 36
Times Cited in Web of Science Core Collection: 20
The effect of calcitonin gene-related peptide on healing of intestinal anastomosis in rats with experimental obstructive jaundice
JOURNAL OF HEPATO-BILIARY-PANCREATIC SURGERY
Volume: 16
Pages: 546-551
DOI: 10.1007/s00534-009-0098-2
Published: JUL 2009
Document Type: Article
Categories / Classification
Research Areas:Gastroenterology & Hepatology; Surgery
Web of Science Categories:Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 19365597
Cited References in Web of Science Core Collection: 28
A case report of intestinal obstruction due to phytobezoar within Meckel's diverticulum
TURKISH JOURNAL OF GASTROENTEROLOGY
Volume: 20
Pages: 76-77
Published: MAR 2009
Document Type: Letter
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology
Web of Science Categories: Gastroenterology & Hepatology
Document Information
Language: English
PubMed ID: 19330743
Cited References in Web of Science Core Collection: 7
Times Cited in Web of Science Core Collection: 2
Liver schwannoma incidentally discovered in a patient with breast cancer
BRATISLAVA MEDICAL JOURNAL-BRATISLAVSKE LEKARSKE LISTY
Volume: 110
Pages: 298-300
Published: 2009
Document Type:Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: General & Internal Medicine
Web of Science Categories: Medicine, General & Internal
Document Information
Language: English
PubMed ID: 19507666
Cited References in Web of Science Core Collection: 8
Times Cited in Web of Science Core Collection: 7
Colonic stricture following conservative treatment of a colonoscopic perforation
ENDOSCOPY
Volume: 40
Pages: E89-E89
DOI: 10.1055/s-2007-995547
Published: DEC 2008
Document Type: Editorial Material
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas:Gastroenterology & Hepatology; Surgery
Web of Science Categories:Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 18633902
Cited References in Web of Science Core Collection: 4
Times Cited in Web of Science Core Collection: 1
Keyhole deformity: A case series
JOURNAL OF GASTROINTESTINAL SURGERY
Volume: 12
Pages: 1110-1114
DOI: 10.1007/s11605-008-0471-5
Published: JUN 2008
Document Type: Article; Proceedings Paper
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories: Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 18213502
Cited References in Web of Science Core Collection: 15
Times Cited in Web of Science Core Collection: 3
Haemorrhoidectomy with electrocautery or ultrashears and stapled haemorrhoidopexy
ANZ JOURNAL OF SURGERY
Volume: 78
Pages: 389-393
DOI: 10.1111/j.1445-2197.2008.04483.x
Published: MAY 2008
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
PubMed ID: 18380739
Cited References in Web of Science Core Collection: 27
Times Cited in Web of Science Core Collection: 4
Retrorectal tumors: A case series
TURKISH JOURNAL OF GASTROENTEROLOGY
Volume: 19
Pages: 40-44
Published: MAR 2008
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology
Web of Science Categories: Gastroenterology & Hepatology
Document Information
Language: English
PubMed ID: 18386239
Cited References in Web of Science Core Collection: 15
Times Cited in Web of Science Core Collection: 10
Transperineal rectocele repair with polyglycolic acid mesh: A case series
DISEASES OF THE COLON & RECTUM
Volume: 50
Pages: 2085-2092
DOI: 10.1007/s10350-007-9067-5
Published: DEC 2007
Document Type: Article; Proceedings Paper
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories:Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 18049839
Cited References in Web of Science Core Collection: 39
Times Cited in Web of Science Core Collection: 7
Fine-tuning of the extent of lateral internal sphincterotomy: Spasm-controlled vs. up to the fissure apex
DISEASES OF THE COLON & RECTUM
Volume: 51
Pages: 128-133
DOI: 10.1007/s10350-007-9121-3
Published: JAN 2008
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories: Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 18085337
Cited References in Web of Science Core Collection: 27
Times Cited in Web of Science Core Collection: 17
Transperineal rectocele repair with polyglycolic acid mesh: A case series - Reply
DISEASES OF THE COLON & RECTUM
Volume: 50
Pages: 2094-2095
Published: DEC 2007
Document Type: Editorial Material
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories:Gastroenterology & Hepatology; Surgery
Document Information
Language: English
Cited References in Web of Science Core Collection: 2
Retrorectal Hemangiopericytoma : A case report
ACTA CHIRURGICA BELGICA
Volume: 107
Pages: 438-441
Published: AUG 2007
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
PubMed ID: 17966543
Cited References in Web of Science Core Collection: 24
Results of lateral internal sphincterotomy for chronic anal fissure with particular reference to quality of life
DISEASES OF THE COLON & RECTUM
Volume: 49
Pages: 1045-1051
DOI: 10.1007/s10350-006-0527-0
Published: JUL 2006
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas:Gastroenterology & Hepatology; Surgery
Web of Science Categories:Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 16598404
Cited References in Web of Science Core Collection: 21
Times Cited in Web of Science Core Collection: 30
Extent of lateral internal sphincterotomy: Up to the dentate line or up to the fissure apex?
DISEASES OF THE COLON & RECTUM
Volume: 48
Pages: 365-370
DOI: 10.1007/s10350-004-0812-8
Published: FEB 2005
Document Type: Article; Proceedings Paper
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas:Gastroenterology & Hepatology; Surgery
Web of Science Categories:Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 15711861
Cited References in Web of Science Core Collection: 27
Times Cited in Web of Science Core Collection: 27
Extent of lateral internal sphincterotomy: Up to the dentate line or up to the fissure apex?
DISEASES OF THE COLON & RECTUM
Volume: 48
Pages: 365-370
DOI: 10.1007/s10350-004-0812-8
Published: FEB 2005
Document Type:Article; Proceedings Paper
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Gastroenterology & Hepatology; Surgery
Web of Science Categories: Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 15711861
Cited References in Web of Science Core Collection: 27
Times Cited in Web of Science Core Collection: 27
Modified Limberg flap reconstruction compares favourably with primary repair for pilonidal sinus surgery
ANZ JOURNAL OF SURGERY
Volume: 74
Pages: 238-242
DOI: 10.1111/j.1445-2197.2004.02951.x
Published: APR 2004
Document Type: Article
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas: Surgery
Web of Science Categories: Surgery
Document Information
Language: English
PubMed ID: 15043735
Cited References in Web of Science Core Collection: 24
Times Cited in Web of Science Core Collection: 51
Comparison of botulinum toxin injection and lateral internal sphincterotomy for the treatment of chronic anal fissure
DISEASES OF THE COLON & RECTUM
Volume: 46
Pages: 232-237
DOI: 10.1097/01.DCR.0000044712.58674.09
Published: FEB 2003
Document Type: Article; Proceedings Paper
Journal Information
Impact Factor: Journal Citation Reports
Categories / Classification
Research Areas:Gastroenterology & Hepatology; Surgery
Web of Science Categories:Gastroenterology & Hepatology; Surgery
Document Information
Language: English
PubMed ID: 12576897
Cited References in Web of Science Core Collection: 35
Times Cited in Web of Science Core Collection: 82
X. Ulusal Kolon ve Rektum Cerrahisi Kongresi 7-11 Eylül 2003
Leventoğlu, S." Kolektral Cerrahide Infeksiyöz Komplikasyonlar : Ardışık 400 Hastanın Belirlenmesi" , "Lateral Internal Sfinkterotomide Düzey Belirlenmesi : Fissür Boyunca Mı? Dentate Çizgiye Kadar Mı?", X. Ulusal Kolon ve Rektum Cerrahisi Kongresi, 7-11 Eylül 2003
III. Çukurova Kolo-Proktoloji sempozyumu 12-14 Nisan 2007
Leventoğlu, S. “Diagnostik laparoskopi ve laparoskopik appendektomi”, III. Çukurova Kolo-Proktoloji sempozyumu, Adana, 12-14 Nisan 2007 (Panelist)
XI. Ulusal Kolon ve Rektum Cerrahisi Kongresi 26-30 Ağustos 2007
Leventoğlu, S." Nüks rektal kanserin önlenmesi ve tedavisi.Robert Beart (Leventoğlu, S. - Oturum Başkanı), “ Key-Hole Deformitesi" , " Laparoskopik Appendektomi: 114 Ardışık Vaka" , "Hollanda’nın 7 yıllık sonuçları: Preoperatif radyoterapiden kim faydalanır?" Van De Velde (Leventoğlu, S. - Oturum Başkanı). XI. Ulusal Kolon ve Rektum Cerrahisi Kongresi, Bodrum, 26-30 Ağustos 2007
XII Uzmanlık Sonrası Eğitim Kursu 26-27 Ekim 2007
Leventoğlu, S. “Fistula Plug uygulaması”Cerrahi Gastroenteroloji 2007, XII Uzmanlık Sonrası Eğitim Kursu, İstanbul, 26-27 Ekim 2007 (Panelist)
Ankara Kolorektal Cerrahi Çalışma Grubu 7 Kasım 2007
Leventoğlu, S. “Akut Divertikülit-Acil Cerrahi” Ankara Kolorektal Cerrahi Çalışma Grubu, Ankara, 7 Kasım 2007 (Konferans)
V. Temel Stoma Bakım Hemşireliği Kursu 19-25 Kasım 2007
Leventoğlu, S. “Stomal Cerrahinin Komplikasyonları”V. Temel Stoma Bakım Hemşireliği Kursu, Ankara, 19-25 Kasım 2007 (Konferans)
TKRCD Sonbahar Sempozyumu 31 Ekim-1 Kasım 2008
Leventoğlu, S. “Panel :Anal bölge sorunlarına yaklaşım- Kronik anal fissürde tek tedavi seçeneği sfinkterotomi midir?" TKRCD Sonbahar Sempozyumu, İstanbul, 31 Ekim-1 Kasım 2008 (Sempozyum)
XII. Ulusal Kolon ve Rektum Cerrahisi Kongresi 19-23 Mayıs 2009
Leventoğlu, S. "Kolorektal cerrahi bakış açısından kabızlık–yavaş geçiş zamanlı kabızlık, çıkış tıkanıklığı, rektosel", "Laparoskopik kolorektal rezeksiyonlar", XII. Ulusal Kolon ve Rektum Cerrahisi Kongresi , Antalya, 19-23 Mayıs 2009
TKRCD Sonbahar Sempozyumu 5 Mayıs 2010
Leventoğlu, S. "Anal Kondilom" TKRCD Sonbahar Sempozyumu - Peritoneal Karsinomatoz Çalıştayı, İzmir, 5 Mayıs 2010
XIII. Ulusal Kolon ve Rektum Cerrahisi Kongresi 18-22 Mayıs 2011
Leventoğlu, S. "LİS’e rağmen iyileşmeyen fissür", XIII. Ulusal Kolon ve Rektum Cerrahisi Kongresi, Antalya, 18-22 mayıs 2011
TKRCD Sonbahar Sempozyumu 16-18 Kasım 2012
Leventoğlu, S. "Panel: Proktoloji- Hemoroidal Hastalık: Tanı, Evreleme, Tedavi Seçenekleri" Türk Kolon ve Rektum Cerrahisi Derneği Sonbahar Sempozyumu, Kayseri, 16-18 Kasım 2012 (Sempozum)
XIV. Ulusal Kolon ve Rektum Cerrahisi Kongresi 16-20 Mayıs 2013
Leventoğlu, S. "Sfinkterotomi- İAS Kesisini Nasıl Belirleriz?" , XIV. Ulusal Kolon ve Rektum Cerrahisi Kongresi, 16-20 Mayıs 2013
TKRCD İlkbahar Sempozyumu 9-11 Mayıs 2014
Leventoğlu S. "Pelvik Taban Hastalıkları ve Rektal Prolapsus- kabızlık ve Zorlu Defekasyon SendromundaCerrahi", TKRCD İlkbahar Sempozyumu- Benign Koloproktolojik Hastalıklar, Adana, 9-11 mayıs 2014 (Sempozyum)
TKRCD İlkbahar Sempozyumu 11-13 Mart 2016
Leventoğlu, S. "Cerrahi yöntemler her zaman iyidir. Peki ama hangisi daha iyi?" ,TKRCD İlkbahar Sempozyumu -Daha İyi Tedavi , Ankara 11-13 mart 2016 (Sempozum)
TKRCD İlkbahar Sempozyumu 13-15 Nisan 2017
Leventoğlu, S. "Hemoroid Tedavisinde Teknik Seçimi" ,TKRCD İlkbahar Sempozyumu- Pratik Uygulama Esasları, Edirne, 13-15 Nisan 2017 (Sempozum)
XVI. Türk Kolon ve Rektum Cerrahisi Kongresi 16-20 Mayıs 2017
Leventoğlu, S. "Tartışmalı Video Panel: Hemoroid Hastalığı - Kapalı Hemoroidektomi (Klasik – Harmonic – Ligasure- Vaka Sunumları) " , "Panel: Felaket Senaryoları, Olgular Eşliğinde Tartışma" "," Panel: Selim Aneroktal Hastalıklar- LIS ama Nasıl?" , XVI. Türk Kolon ve Rektum Cerrahisi Kongresi , Antalya, 16-20 Mayıs 2017