1. Dimitrios K. Manatakis, Nikolaos Gouvas, George Pechlivanides, Evangelos Xynos. Ventral Prosthesis Rectopexy for obstructed defaecation syndrome: a systematic review and meta‑analysis. Updates Surg. 2021 Oct 19https://doi.org/10.1007/s13304-021-01177-2
2. Georgios Pechlivanides. A review of various anatomical definitions of the rectum and their clinical implication in rectal cancer management. Int J Surg Med. 2021; 7(3): 50-55. doi: 10.5455/ijsm.rectal-cancer-management-greece
3. Lazaros Papadopoulos, Vassileios Barbounis, Kalliopi Petraki, Georgios Pechlivanidis. Post-radiation breast angiosarcoma in a patient with four preceded cancers: Case report and Literature review. Int J Surg Med. 2020; 6(2): 44-48
4. Pechlivanides G, Kalles V, Boutsikos G, Papadopoulos L. Breast cancer skin recurrence: a comprehensive review on pathogenesis, treatment, and prognosis. Int J Med Surg 2019, Vol 6, ID 299 DOI:http://dx.doi.org/10.15342%2Fijms.v6ir.299.
5. Manatakis DK, Papageorgiou D, Antonopoulou MI, Stamos N, Agalianos C, Ivros N, Davides D, Pechlivanides G, Kyriazanos I. Ten-year Audit of Safe Bail-Out Alternatives to the Critical View of Safety in Laparoscopic Cholecystectomy. World J Surg. 2019 Jul 16. doi: 10.1007/s00268-019-05082-z. [Epub ahead of print]
6. van Tol RR, Kimman ML, Melenhorst J, Stassen LPS, Dirksen CD, Breukink SO; Members of the Steering Group. European Society of Coloproctology Core Outcome Set for haemorrhoidal disease: an international Delphi study among healthcare professionals. Colorectal Dis. 2019 May;21(5):570-580. doi: 10.1111/codi.14553. Epub 2019 Feb 8.
7. Stamou K, Gouvas N, Pechlivanides G, Xynos E. Primary curative surgery and preemptive or adjuvant hyperthermic peritoneal chemotherapy in colorectal cancer patients at high risk to develop peritoneal carcinomatosis. A systematic review. J BUON. 2018 Sep-Oct;23(5):1249-1261. PMID: 30570844 Free Article
8. Dervenis C, Xynos E, Sotiropoulos G, Gouvas N, Boukovinas I, Agalianos C, Androulakis N, Athanasiadis A, Christodoulou C, Chrysou E, Emmanouilidis C, Georgiou P, Karachaliou N, Katopodi O, Kountourakis P, Kyriazanos I, Makatsoris T, Papakostas P, Papamichael D, Pechlivanides G, Pentheroudakis G, Pilpilidis I, Sgouros J, Tekkis P, Triantopoulou C, Tzardi M, Vassiliou V, Vini L, Xynogalos S, Ziras N, Souglakos J. Clinical practice guidelines for the management of metastatic colorectal cancer: a consensus statement of the Hellenic Society of Medical Oncologists (HeSMO). Ann Gastroenterol. 2016 Oct-Dec;29(4):390-416.
9.  Evaghelos Xynos , Paris Tekkis , Nikolaos Gouvas , Louiza Vini, Evangelia Chrysou , Maria Tzardi , Vassilis Vassiliou , Ioannis Boukovinas, Christos Agalianos , Nikolaos Androulakis, Athanasios Athanasiadis , Christos Christodoulou , Christos Dervenis, Christos Emmanouilidis, Panagiotis Georgiou , Ourania Katopodi , Panteleimon Kountourakis , Thomas Makatsoris, Pavlos Papakostas , Demetris Papamichael , George Pechlivanides , Georgios Pentheroudakis , Ioannis Pilpilidis , Joseph Sgouros, Charina Triantopoulou , Spyridon Xynogalos, Niki Karachaliou , Nikolaos Ziras , Odysseas Zoras , John Souglakos [the Executive Team on behalf of the Hellenic Society of Medical Oncologists (HeSMO)] Clinical practice guidelines for the surgical treatment of rectal cancer: a consensus statement of the Hellenic Society of Medical Oncologists (HeSMO) Annals of Gastroenterology (2016) 29, 103-126.
10. Georgios Pechlivanides G, Vassilarou D, Vassilaros S. Is It Possible to Reduce Even More Need for Axillary Dissection? Advances in Breast Cancer Research, 2013, 2, 44-50 doi:10.4236/abcr.2013.22008
11. Moraitis S, Perelas A, Toufektzian L, Mazarakis N, Pechlivanides G. Giant sternal metastasis secondary to follicular carcinoma of the thyroid gland: report of a case. Surg Today. 2012 May 11. [Epub ahead of print]
12. Gouvas N, Pechlivanides G, Zervakis N, Kafousi M, Xynos E. Complete Mesocolic Excision In Colon Cancer Surgery: A Comparison Between Open And Laparoscopic Approach Distal Right-Sided Colon Cancer Remains A Challenge For Laparoscopy. Colorectal Dis. 2012 Mar 5. doi: 10.1111/j.1463-1318.2012.03019.x. [Epub ahead of print]
13. Gouvas N, Tsiaoussis J, Athanasakis E, Zervakis N, Pechlivanides G, Xynos E. Simple suture or prosthesis hiatal closure in laparoscopic repair of paraesophageal hernia: a retrospective cohort study. Dis Esophagus. 2011 Feb;24(2):69-78.
14. Tsoukali, E., Gouvas, N., Tsiaoussis, J., Pechlivanides, G., Zervakis, N., Mantides, A. and Xynos, E. (2011), Specific esophagogram to assess functional outcomes after Heller’s myotomy and Dor’s fundoplication for esophageal achalasia. Dis Esophagus. 2011 Sep;24(7):451-7.
15. Pechlivanides G, Vassilaros D, Tsimpanis A, Apostolopoulou A, Vasilaros S. Review Article. Sentinel Node Biopsy for Breast Cancer Patients: Issues for Discussion and Our Practice. Patholog Res Int. 2010 Dec 28;2011:109712.
16. Gouvas N, Tsiaoussis J, Pechlivanides G, Zervakis N, Tzortzinis A, Avgerinos C, Dervenis C, Xynos E.
    a. Laparoscopic or open surgery for the cancer of the middle and lower rectum short-term outcomes of a comparative non-randomised study.
    b. Int J Colorectal Dis. 2009 Jul;24(7):761-9. Epub 2009 Feb 17.
17. Gouvas, N., Tsiaoussis, J., Pechlivanides, G., Tzortzinis, A., Dervenis, C., Avgerinos, C., Xynos, E.
    Quality of surgery for rectal carcinoma: comparison between open and laparoscopic approaches
    (2009) American Journal of Surgery, 198 (5), pp. 702-708. Cited 3 times.
18. Gouvas, N., Tsiaoussis, J., Pechlivanides, G., Zervakis, N., Tzortzinis, A., Avgerinos, C., Dervenis, C., Xynos, E.
    Laparoscopic or open surgery for the cancer of the middle and lower rectum short-term outcomes of a comparative non-randomised study
    (2009) International Journal of Colorectal Disease, 24 (7), pp. 761-769. Cited 1 time.
19. Tsiaoussis, J., Pechlivanides, G., Gouvas, N., Athanasakis, E., Zervakis, N., Manitides, A., Xynos, E.
    Patterns of esophageal acid exposure after laparoscopic Heller’s myotomy and Dor’s fundoplication for esophageal achalasia
    (2008) Surgical Endoscopy and Other Interventional Techniques, 22 (6), pp. 1493-1499. Cited 2 times.
20. Pechlivanides, G., Tsiaoussis, J., Athanasakis, E., Zervakis, N., Gouvas, N., Zacharioudakis, G., Xynos, E.
    Stapled transanal rectal resection (Starr) to reverse the anatomic disorders of pelvic floor dyssynergia
    (2007) World Journal of Surgery, 31 (6), pp. 1329-1335. Cited 18 times.
21. Pechlivanides, G., Gouvas, N., Tsiaoussis, J., Tzortzinis, A., Tzardi, M., Moutafidis, M., Dervenis, C., Xynos, E.
    Lymph node clearance after total mesorectal excision for rectal cancer: Laparoscopic versus open approach
    (2007) Digestive Diseases, 25 (1), pp. 94-99. Cited 7 times.
22. Tsiaoussis, J., Athanasakis, E., Pechlivanides, G., Tzortzinis, A., Gouvas, N., Mantides, A., Xynos, E.
    Long-term functional results after laparoscopic surgery for esophageal achalasia
    (2007) American Journal of Surgery, 193 (1), pp. 26-31. Cited 6 times.
23. Kyriazanos, I.D., Tambaropoulos, K., Martinos, H., Pechlivanidis, G., Davidis, D., Noussis, G.
    Meckel’s diverticulum lithiasis: A case of small bowel obstruction due to a migrated Meckel’s enterolith
    (2006) Indian Journal of Surgery, 68 (1), pp. 41-43. Cited 1 time.
24. Tsiaoussis, J., Chrysos, E., Athanasakis, E., Pechlivanides, G., Tzortzinis, A., Zoras, O., Xynos, E.
    Rectoanal intussusception: Presentation of the disorder and late results of resection rectopexy
    (2005) Diseases of the Colon and Rectum, 48 (4), pp. 838-844. Cited 14 times.
25. Chrysos, E., Athanasakis, E., Pechlivanides, G., Tzortzinis, A., Mantides, A., Xynos, E.
    The effect of total and anterior partial fundoplication on antireflux mechanisms of the gastroesophageal junction
    (2004) American Journal of Surgery, 188 (1), pp. 39-44. Cited 9 times.
26. Sgouros, S.N., Vlachogiannakos, J., Karamanolis, G., Stefanidis, G., Papadopoulou, E., Pechlivanides, G., Nousis, G., Mantides, A.
    Gastric electrical activity in patients with cholelithiasis undergoing laparoscopic cholecystectomy: A prospective controlled study
    (2004) Journal of Gastroenterology and Hepatology, 19 (6), pp. 661-664.
27. Chrysos, E., Prokopakis, G., Athanasakis, E., Pechlivanides, G., Tsiaoussis, J., Mantides, A., Xynos, E.
    Factors affecting esophageal motility in gastroesophageal reflux disease
    (2003) Archives of Surgery, 138 (3), pp. 241-246. Cited 10 times.
28. Pechlivanides, G., Chrysos, E., Athanasakis, E., Tsiaoussis, J., Vassilakis, J.S., Xynos, E.
    Laparoscopic Heller cardiomyotomy and Dor fundoplication for esophageal achalasia: Possible factors predicting outcome
    (2001) Archives of Surgery, 136 (11), pp. 1240-1243. Cited 31 times.
29. Pechlivanides, G.
    Adjuvant radiotherapy and chemotherapy in the treatment of rectal cancer
    (2000) Annals of Gastroenterology, 13 (2), pp. 89-94.
30. Vassilakis, J.S., Pechlivanides, G., Zoras, O.J., Vrachasotakis, N., Chrysos, E., Tzovaras, G., Xynos, E.
    Anorectal function after low anterior resection of the rectum
    (1995) International Journal of Colorectal Disease, 10 (2), pp. 101-106. Cited 34 times.
31. Pechlivanides, G., Xynos, E., Chrysos, E., Tzovaras, G., Fountos, A., Vassilakis, J.S.
    Gallbladder emptying after antiulcer gastric surgery
    (1994) American Journal of Surgery, 168 (4), pp. 335-339. Cited 8 times.
32. Xynos, E., Pechlivanides, G., Zoras, O.J., Chrysos, E., Tzovaras, G., Fountos, A., Vassilakis, J.S.
    Reproducibility of gallbladder emptying scintigraphic studies
    (1994) Journal of Nuclear Medicine, 35 (5), pp. 835-839. Cited 23 times.
33. Vassilakis, J.S., Pechlivanides, G., Fountos, A., Zoras, O.J., Xynos, E.
    Roux-en-Y gastroenterostomy severely disturbs emptying of the gallbladder
    (1994) Journal of the American College of Surgeons, 179 (3), pp. 313-317. Cited 5 times.
34. Paraskevopoulos, J.A., Pechlivanides, G., Barsoum, G.H., Windsor, C.W.O.
    Parietal seeding of carcinoma of the gallbladder after laparoscopic cholecystectomy [9] (1992) British Journal of Surgery, 79 (8), pp. 845-846. Cited 12 times.
35. Vassilakis, J.S., Xynos, E., Zoras, O.J.L., Pechlivanidis, G., Fountos, A.
    Surgical treatment of the enterogastric reflux syndrome: Preoperative and postoperative estimation by 99mTc-HIDA scintigraphy
    (1992) American Surgeon, 58 (12), pp. 787-791. Cited 2 times.
36. Xynos, E., Mantides, A., Papageorgiou, A., Fountos, A., Pechlivanides, G., Vassilakis, J.S.
    Erythromycin accelerates delayed gastric emptying of solids in patients after truncal vagotomy and pyloroplasty
    (1992) European Journal of Surgery, Acta Chirurgica, 158 (8), pp. 407-411. Cited 23 times.
37. Xynos, E., Vassilakis, J.S., Fountos, A., Pechlivanides, G., Karkavitsas, N.
    Enterogastric reflux after various types of antiulcer gastric surgery: Quantitation by 99mTc-HIDA scintigraphy
    (1991) Gastroenterology, 101 (4), pp. 991-998. Cited 21 times.
38. Pechlivanides, G., Xynos, E., Tzortzinis, A., Papageorgiou, A., Vassilakis, J.S.
    Hydatid disease of the liver. Diagnosis and surgical treatment
    (1991) HPB Surgery, 4 (1), pp. 59-67. Cited 7 times.
39. Xynos, E., Neonakis, E., Pechlivanidis, G., Vassilakis, J.S.
    Serum and urine α-amylase isoenzymes levels after operative cholangiogram. A prospective clinical and biochemical study
    (1990) HPB Surgery, 3 (1), pp. 47-51. Cited 1 time.
40. Xynos, E., Zoras, O.J.L., Pechlivanidis, G., Neonakis, E., Vassilakis, J.S.
    Intrabiliary rupture of hydatid cyst of the liver. Simple tube drainage of the common bile duct or choledochoduodenostomy?
    (1990) Digestive Surgery, 7 (3), pp. 148-152. Cited 1 time.

Definition of the Rectum: An International, Expert-based Delphi Consensus.
DʼSouza N, de Neree Tot Babberich MPM, d’Hoore A, Tiret E, Xynos E, Beets-Tan RGH, Nagtegaal ID, Blomqvist L, Holm T, Glimelius B, Lacy A, Cervantes A, Glynne-Jones R, West NP, Perez RO, Quadros C, Lee KY, Madiba TE, Wexner SD, Garcia-Aguilar J, Sahani D, Moran B, Tekkis P, Rutten HJ, Tanis PJ, Wiggers T, Brown G.
Ann Surg. 2019 Apr 8. doi: 10.1097/SLA.0000000000003251. [Epub ahead of print]

We would like to thank the following experts for participating in both rounds of the consensus:

Africa—T. Madiba; Asia—KY Lee;
Europe—A. D’Hoore (Belgium), S. Laurberg (Denmark), E. Tiret, JP
Gerard (both France), S. Stelzner (Germany), S Goursoyianni,, G.
Pechlivanidis, J. Souglakos, C. Triantopolou, E. Xynos, (all Greece),
V. Valenti (Italy), A. Albers, R. Beets-Tan, WA Bemelman, S. Breukink,
JWT. Dekker, P. Doorenbosch, TM Karsten, J. Merijerink, I.
Nagtegaal, C. Punt, H. Rutten, T. Wiggers, CJH Van de Velde (all
Netherlands), F. Pfeffer (Norway), A. Lacy, A. Cervantes (both
Spain), T. Folm, P. Nilsson, L. Blomqvist, B. Glimelius (all Sweden),
A. Acheson, A. Baxter, R. Beable, C. Beadsmoore, G. Branagan, K.
Chapple, J. Conti, N. Francis, N. Gouvas, R. Glynne-Jones, SJ
Holtham, I. Jenkins, S. Karandikar, S. Kapur, A. Mirnezami, B.
Moran, S. Moug, J. Murphy, H. Narula, G. Nash, D. Nicol, D.
O’Leary, R. Rahaman, V. Sams, I. Shaikh, Sharawdwani, O. Shihab,
B Singh, J. Sington, C. Speakman, A. Stearns, N. Stylianides, P.
Tekkis, O. Warren, NP West, J. Wheeler, S. Wijeyekoon (all UK);
North America—S. Wexner, D. Sahani, P. Sylla, J.A. Garcia; South
America—C. Quadros, R. Perez, C. Ortega.