Doctors for Colon cancer

Voulgaris Sotiris is a General Surgeon with a private practice located in Ilisia. He is a graduate of the Medical School of the University of Ioannina and holds a postgraduate diploma in Minor Pelvic and Perineal Surgery from the Medical School of the University of Thessaly. Additionally, he has completed postgraduate studies in Surgical Oncology at the Medical School of the National and Kapodistrian University of Athens. He is currently working as a Surgeon - Consultant at the Athens Medical Center. His practice encompasses the full spectrum of general surgery cases, with a specialization in laparoscopic surgery, colorectal surgery, and hernia surgery.

Ο ιατρός Άσση Αβραάμ είναι Διευθυντής της Β’ Ογκολογικής Κλινικής - Μονάδας Κλινικών Μελετών στο νοσοκομείο Ερρίκος Ντυνάν Hospital Center.

Ο Αβραάμ Άσση αποφοίτησε το 2005 από την Ιατρική Σχολή του Πανεπιστημίου Αλεξάνδρειας Αιγύπτου. Ειδικεύθηκε στην Παθολογική Ογκολογία στην Δ’ Παθολογική Κλινική και στην Αιματολογική Κλινική του Νοσοκομείου Ευαγγελισμός, στην Ογκολογική Κλινική του Πανεπιστημιακού Νοσοκομείου Ιωαννίνων καθώς και στην Ογκολογική Κλινική του Γενικού Αντικαρκινικού Νοσοκομείου Πειραιώς Μεταξά.

Ταυτόχρονα, παρακολούθησε το μεταπτυχιακό πρόγραμμα σπουδών της Ιατρικής Σχολής ΕΚΠΑ “Η Νεοπλασματική Νόσος στον Άνθρωπο – Σύγχρονη Κλινικοπαθολογοανατομική προσέγγιση και έρευνα” ενώ το 2019 έλαβε τον τίτλο ευρωπαϊκής πιστοποίησης στην Παθολογική Ογκολογία ESMO και τον Οκτώβριο του 2021 τον τίτλο ευρωπαϊκής πιστοποίησης στη Γυναικολογική Ογκολογία, ESGO.

Από το 2019, έχει συνεργαστεί με πληθώρα κλινικών όπως η Ογκολογική Κλινική του Γενικού Αντικαρκινικού Νοσοκομείου Πειραιώς Μεταξά, η Πανεπιστημιακή Παθολογική Κλινική του ΓΝΑ ΑΤΤΙΚΟΝ, η Δ’ Ογκολογική κλινική ΕΡΡΙΚΟΣ ΝΤΥΝΑΝ Hospital Center, καθώς και με τα θεραπευτήρια Metropolitan General, Therapis General, ΜΗΤΕΡΑ. Ιδιαίτερο γνωστικό του αντικείμενο αποτελούν ο Γυναικολογικός Καρκίνος, ο Καρκίνος Μαστού, ο Καρκίνος Πεπτικού, ο Καρκίνος Πνεύμονος καθώς και ο Καρκίνος Κεφαλής/τραχήλου.

Ο ιατρός έχει ενεργό συμμετοχή σε ελληνικά και διεθνή συνέδρια και κλινικά σεμινάρια σχετικά με το αντικείμενο της Παθολογικής Ογκολογίας, τόσο με προφορικές ομιλίες, όσο και με ελεύθερες ανακοινώσεις. Τέλος, είναι συγγραφέας δημοσιεύσεων σε διεθνώς αναγνωρισμένα ιατρικά περιοδικά.

Σήμερα, είναι Διευθυντής της Β' Ογκολογικής Παθολογικής Κλινικής - Μονάδας Κλινικών Μελετών στο ΕΡΡΙΚΟΣ ΝΤΥΝΑΝ Hospital Center, ενώ παράλληλα διατηρεί ένα ιδιωτικό ιατρείο στη Ρόδο, που εξυπηρετεί κατοίκους Δωδεκανήσων.

Margonis Euaggelos is a General Surgeon and maintains a private practice in Ioannina. He studied at the Medical School of the National and Kapodistrian University of Athens and subsequently specialized at the University General Hospital of Larissa. He has specialized in Minimally Invasive treatment of abdominal wall hernias in Germany. Additionally, he holds a Master's degree in "Minor Pelvic and Perineal Surgery" from the Medical School of the University of Thessaly. He has served as an Assistant Consultant Surgeon B' at the Surgical Clinic of the General Hospital of Ioannina "G. Hatzikosta" and has worked as a Surgeon in Germany. He is a member of the Hellenic Surgical Society, the European Association for Endoscopic Surgery (EAES), the Medical Association of Ioannina, and the Medical Association of Larissa. Finally, he is specialized in Laparoscopic surgery, Minimally invasive Abdominal wall Hernia Surgery, and Coloproctological surgery.

Mantonakis Eleutherios MD, MSc, PhD is a General Surgeon, Doctor of the Medical School of the National and Kapodistrian University of Athens, Director of the I' Surgical Clinic at Errikos Dynan Hospital, with a private practice in Kolonaki. He has completed postgraduate studies in Liver, Biliary Tract, and Pancreatic Surgery and specialized in General Surgery at the A’ Surgical Clinic of the National and Kapodistrian University of Athens at Laiko Hospital. He received further training in Laparoscopic Surgery and Surgical Oncology at the University Hospitals Beaujon and Georges-Pompidou in Paris. He also underwent advanced training in minimally invasive management of anorectal diseases (Laser LHP, SiLaC, FiLaC) in Germany. He is a member of the International Society for Laser Applications in Proctology. Moreover, he possesses significant research experience, having participated in numerous scientific conferences both as an attendee and as a speaker or with scientific presentations, and he has numerous publications in foreign languages.

Koutsogiorgas Paris is a General Surgeon and maintains a private practice in Psychiko, within the Psychiko Medical Center. He graduated from the Medical School of Aristotle University of Thessaloniki and completed his specialty training at the 2nd University Surgical Clinic of Laiko Hospital in Athens. He is an Associate of the most prominent private clinics, including Psychiko Clinic of the Athens Medical Group, Iaso General, Bioclinic, and Euroclinic. He has extensive experience across the full spectrum of General Surgery and Laparoscopic Surgery, with specialization in breast surgery and endocrine glands (thyroid and parathyroid glands), managing all related cases. He employs the most advanced medical technologies, with patient safety and health protection as his utmost priority. Furthermore, he has attended seminars at significant hospital centers in Europe, aiming for continuous education and updates in his field.

Dr. Lazaros Lazarou is a General Surgeon, certified in surgical oncology of the colon and rectum, pancreas, stomach, liver, and thyroid gland, as well as in proctology, with specialized expertise in laparoscopic and robotic surgical procedures. He maintains a private medical practice in Volos, Greece. He studied and specialized in Germany, where he pursued a career in Surgery. He completed his residency at the Department of General, Visceral and Transplant Surgery of the University Hospital of Ulm, where in 2007 he obtained his Board Certification in General Surgery and was appointed Consultant Surgeon, while in 2010 he acquired the qualification in Advanced Visceral Surgery. In 2013, he was promoted to Deputy Director, and in 2015 to Associate Director of Surgery, with parallel responsibilities for the development of the 14 Centers of Excellence of the surgical department, including all oncological centers, as well as centers for inflammatory bowel disease, thyroid and parathyroid glands, hernia, and sarcoma. In 2017, he assumed the position of Director of General, Visceral, Thoracic and Transplant Surgery at the Stuttgart Hospital, which is a certified Oncology Cancer Center of the German Cancer Society (DKG) and a Transplant Center with 23 Centers of Excellence. At the same hospital, he also served as Scientific Coordinator and Medical Director, with responsibilities including: coordination of the Visceral Oncology Center (esophagus, stomach, pancreas, liver, colon and rectum, endocrine glands, peritoneal and other metastases, sarcoma), director of the Oncological–Visceral Tumor Board, delegate for the education of medical students at the Center for Surgical Medicine, transfusion officer of the department, coordinator of the research programs of the Visceral Oncology Center, officer responsible for quality assurance of the Department of General, Visceral, Thoracic and Transplant Surgery, as well as member of the committee of the German Cancer Society responsible for the certification of Centers of Excellence in Visceral and Oncological Medicine. Mr. Lazaros Lazarou returned to Greece with his family, aiming to offer his extensive surgical experience and scientific expertise acquired at leading German and European certified centers where he worked. His commitment focuses on personalized treatment based on Greek and international protocols, access to minimally invasive surgery, optimal surgical outcomes, absolute transparency and trust, as well as continuous education and innovation. Following a competitive selection process, he assumed the position of Coordinating Director of Surgery at the Volos Hospital, while simultaneously providing his services at his private practice and in private hospitals. His clinic focuses on minimally invasive surgical techniques (laparoscopic and robotic surgery) and specialized oncological surgery. Particular emphasis is placed on colorectal cancer, pancreatic cancer, as well as the surgical treatment of endocrine glands and proctology. Dr. Lazaros Lazarou is a member of distinguished German and Greek medical societies that play a leading role in his specialty and actively participates in their conferences and scientific activities. He has contributed to the authorship of studies published in prestigious international scientific journals and has delivered numerous lectures and presentations at international conferences.

Dr. Tsilividis Vasileios is a General Surgeon specializing in Oncological, Laparoscopic, and Bariatric Surgery, with extensive experience in university and private clinics in France and Greece, having performed over 3,500 surgeries.

He maintains private practices in Marousi and Peristeri.

He graduated from the French School of Athens and continued his studies at the Medical School of René Descartes University in Paris. There, he earned his Doctor of Medicine degree and subsequently obtained numerous university diplomas in France, including specializations in gastrointestinal surgery, oncological surgery, and bariatric surgery. He is also a member of the Hellenic Society of Gastrointestinal Oncology.

His professional career began at the University Hospital of Rouen, where he served as a resident, registrar, and later as a hospital physician. Since 2017, he has worked in clinics in France primarily focusing on General, Laparoscopic, Bariatric, and Oncological surgery, utilizing minimally invasive techniques. Currently, he provides his services at the Athens Medical Center in Marousi and Peristeri.

Dr. Tsilividis has participated in numerous scientific conferences and seminars, published papers in international medical journals, and undertaken educational roles at the university level.

He is fluent in French and English.

Kyziridis Dimitrios is a General Surgeon who maintains a private practice in Thessaloniki. He holds a PhD from the Medical School of Aristotle University of Thessaloniki (A.U.Th.). Additionally, he is a Diplomate of the European Society of Surgical Oncology for the management of peritoneal malignancy and a collaborator of the peritoneal malignancy program at the Euromedica Cyan Cross clinic, while also specializing in the treatment of anal diseases. From September 2023 to October 2024, he served as a Scientific Collaborator of the 4th University Surgical Clinic of A.U.Th. at the General Hospital of Thessaloniki "G. Papanikolaou," actively participating in surgeries, on-call duties, and the clinic's teaching activities. He has participated in numerous seminars and conferences both in Greece and abroad and is the author of numerous announcements and papers in Greek and international journals.

Kouzanidis Nikolaos MD, MSc is a General Surgeon with private practices in Nea Ionia and Ampelokipoi. He graduated from the Medical School of the University of Patras and has completed postgraduate studies in minimally invasive surgery, robotic surgery, and telesurgery at the Medical School of the National and Kapodistrian University of Athens. The physician performs laparoscopic cholecystectomies, inguinal hernias, umbilical hernias, and all types of surgical procedures, as well as home-based pressure ulcer debridement. Kouzanidis Nikolaos continuously updates his knowledge in his specialty through active participation in conferences and attendance at seminars. Finally, he is a member of the Medical Association of Athens, the Hellenic Surgical Society, the Hellenic Society of Laparoscopic Surgery & Other Interventional Techniques, as well as the European Association for Endoscopic Surgery.

Ioanna Papadopoulou is a General Surgeon and maintains private practices in Cholargos and Glyfada. She performs exclusively laparoscopic surgery for benign and malignant conditions of the upper and lower gastrointestinal tract, gallbladder and bile ducts, as well as all types of abdominal wall hernias. She received her Medical Degree from the “Gr. T. Popa” University of Medicine and Pharmacy in Iasi in 2012. She completed her rural service at the General Hospital of Messinia – Kyparissia Nursing Unit in 2013–2014. In 2021, she obtained her surgical specialty certification.

During her specialty training, she served at the 417 Army Fund Nursing Institution (N.I.M.T.S), where she specialized in advanced laparoscopic surgery for malignant colon diseases, obesity, reflux, and hernias, as well as thyroid malignancies. Additionally, at the Sismanogleio General Hospital of Athens, she participated in a large volume of colon and thyroid cancer surgeries. Considering that the present of surgery lies in laparoscopic and robotic techniques, she attended advanced laparoscopic seminars organized by ELPEN under the auspices of the Hellenic Surgical Society from 2016 to 2018.

In 2021, she completed further training in Surgical Oncology, earning a Master of Science (MSc) degree from the National and Kapodistrian University of Athens. Finally, in 2023, she received additional training in the latest methods for managing complex diaphragmatic hernias and reflux at the Symposium on Innovation in Surgery in Malta.

Dr. Svoronos Gerasimos is a General Surgeon with a private practice in Cholargos. He has 38 years of surgical experience, having performed a large number of operations. He holds a PhD and a degree from the Medical School of the National and Kapodistrian University of Athens. He served as the Head of the Surgical Department at the General Hospital for Thoracic Diseases of Athens "Sotiria" for 20 consecutive years. During his 20 years at the clinic, he participated in a significant number of surgical procedures.

Dr. Gkiouzelis Dimitris, MD, PhD, is a General Surgeon and Proctologist, holding a Doctorate from the Medical School of the University of Athens. In his clinic, every patient has the opportunity to be informed about conditions related to Digestive System Surgery, abdominal wall hernia surgery (inguinal hernia, ventral hernia, umbilical hernia), and a wide range of other surgical disorders. Dr. Dimitris Gkiouzelis is the Director of the Surgical Clinic at the Athens Medical Center Group, Psychiko Clinic. He has served as the Director of the Surgical Clinic at the Piraeus Bioclinic and as a Scientific Collaborator in the Surgical Department of the Athens Bioclinic. He specializes in Advanced Laparoscopic Surgery / Minimally Invasive Surgery and Surgical Oncology. Additionally, through continuous education, he is involved in cases concerning the Surgical Treatment of Breast Cancer. He has extensive surgical experience, having performed over 4000 procedures to date with complete success. Finally, Dr. Gkiouzelis is a member of the Athens Medical Association, the British Medical Association, and the Hellenic Surgical Society, and collaborates with all private insurances.

Dimitriadis Ioannis is an Oncologist who maintains private practices in Athens, Argos, and Tripoli. He holds a medical degree from the School of Health Sciences at the University of Patras and specialized in Internal Medicine at the Internal Medicine Clinic of the General Hospital of Argos. Subsequently, he specialized in Hematology at the Hematology Department of the General Hospital of Athens "Alexandra" and in Medical Oncology at the Oncology Clinic of the 251 Air Force General Hospital and the Oncology-Hematology Unit of the Therapeutic Clinic of the General Hospital of Athens "Alexandra." Additionally, he completed a postgraduate program in "Thoracic Oncology: contemporary clinical and laboratory approaches and research" at the Oncology Unit of the 3rd Internal Medicine Clinic of the National and Kapodistrian University of Athens at the General Chest Diseases Hospital of Athens "Sotiria," and educational programs in Immuno-Oncology and Health Economics at the Department of Economic Science, University of Piraeus. He has been an external collaborator, Pathologist-Oncologist, at "Errikos Dynan" Hospital and the Athens Therapy Clinic since 2017. He regularly attends numerous seminars and conferences both in Greece and abroad, participates as a researcher in clinical studies, and has numerous scientific publications. Finally, he is a member of the Hellenic Society of Medical Oncologists, the European Society for Medical Oncology, and the American Society of Clinical Oncology.

Ntourakis Dimitrios MD, PhD, FACS is a General Surgeon maintaining a private practice in Paleo Faliro. He is a Professor of Surgery at the European University of Cyprus and the Director of the Minimally Invasive Surgery Clinic at Iatriko Paleo Faliro. He holds a PhD from the Medical School of the National and Kapodistrian University of Athens and is a graduate of the same institution’s Medical School. Additionally, he holds diplomas in Laparoscopic Surgery, Ultrasound, and Ultrasonographic Techniques from the University of Strasbourg, a diploma in Hepato-Biliary and Pancreatic Surgery from Paris XI University, and a diploma in Colorectal and Anal Surgery from Paris Diderot - Paris VII University. It is also noteworthy that he graduated from the Surgical Leadership Program at the Harvard Medical School. He initially specialized at Korgialeneio - Benakeio Hospital of the Hellenic Red Cross and subsequently continued his training at the University of Strasbourg, France, where he later served as Chef de Clinique des Universités. Finally, he has participated in numerous conferences and courses and has an extensive number of publications in international scientific journals. He is a member of scientific associations and societies in Greece and abroad.

Dr. Napoleon Xirokostas is a board-certified General Surgeon with subspecialty training in Laparoscopic, Robotic, and Oncologic Surgery. He maintains a private medical office in Rafina, Greece, and also serves as a Consultant Surgeon at the 1st Surgical Department of IASO General Hospital in Athens.

He completed his residency in General Surgery at Evangelismos General Hospital of Athens, the largest tertiary care and trauma center in Greece, where he also held the position of Chief Resident. Over the course of his training, he participated in more than 1,000 surgical procedures, including a wide spectrum of emergency, oncologic, and minimally invasive surgeries.

Dr. Xirokostas holds a Medical Degree (MD) from the Democritus University of Thrace and a Master of Science (MSc) in Advanced Laparoscopic and Bariatric Surgery from the National and Kapodistrian University of Athens.

He completed his mandatory rural medical service at the General Hospital of Kyparissia and previously served in the Greek Army as a General Medicine Doctor, providing medical assessments and basic life support instruction.

He has received extensive training in trauma surgery (DSTC), laparoscopic and robotic techniques, microsurgery, and emergency abdominal procedures. He is certified in ATLS, ALS, and has participated in numerous specialized surgical workshops and cadaveric dissection courses across Europe.

Dr. Xirokostas has an active academic presence, with several peer-reviewed publications and presentations at national and international surgical congresses.

He treats conditions including:

• Laparoscopic surgeries (cholecystectomy, hernias, appendectomy)

• Thyroid and parathyroid surgery

• Oncologic surgery (colorectal, gastric, skin/melanoma, soft tissue)

• Robotic surgery for complex abdominal cases

• Emergency trauma surgery and general surgical consults

His clinical approach is grounded in personalized care, evidence-based practice, and a strong commitment to patient safety and recovery.

Tzatzarakis Emmanouil is a General Surgeon - Endocrine Surgeon, PhD holder from the University of Heidelberg in Germany, and maintains a private practice in Kalamata. In 2008, he was admitted to the Medical School of the National and Kapodistrian University of Athens, from which he graduated in 2014 with an excellent degree (8.8). After graduation, he moved to Germany, where he began his training in the specialty of General Surgery at the University Clinic of Mannheim, completing it in 2021. He continued to work at the same clinic as a Senior Registrar II until 2024, with a special focus on laparoscopic repair of abdominal wall hernias. In 2022, he completed his doctoral dissertation at the University of Heidelberg, earning the title of Doctor (Dr. med.). From 2024 until June 2025, he worked as a Senior Registrar I at the Thyroid and Parathyroid Surgery Center of Marienhaus Klinikum in Mainz, Germany, where he performed approximately 200 thyroid and parathyroid surgeries and participated in over 500 in total. In June 2025, he relocated to his wife’s hometown, Kalamata, together with her and their two children, beginning his professional activity in Greece.

Alivizatos Vasileios MD, PhD is a general surgeon, Doctor of Medicine from the Medical School of the University of Patras, and former Coordinating Director of the Surgical Clinic at the General Hospital of Patras "Saint Andrew," where he served for a total of 36 years as a specialized surgeon. During his career, he received advanced training in liver-biliary-pancreatic surgery in Bern, Switzerland; new hernia repair techniques in Mechelen, Belgium; and Artificial Nutrition (Parenteral, Enteral) in Manchester, United Kingdom. He has attended numerous advanced training seminars in the USA and has participated in 139 medical conferences (74 in Greece, 65 abroad, mainly Europe, USA, Asia), presenting scientific clinical studies as well as delivering lectures and talks upon invitation by medical societies. Furthermore, he has 124 publications of clinical studies in Greek and international medical journals and books, with 4 of his published studies in international medical journals cited 119 times in studies by foreign authors (citation index). He has extensive experience in surgical procedures of minor and moderate severity (hernias, pilonidal cyst, lipomas, biliary diseases, anal conditions, etc.), as well as major surgeries (benign and malignant diseases of the stomach, small and large intestine, kidney, uterus, ovaries) and benign and malignant diseases of the pancreas (chronic pancreatitis, pancreatic tumors, pancreaticoduodenectomies Whipple). Currently, he practices in the private sector, covering the full spectrum of general surgery as well as Artificial Nutrition (Parenteral and Enteral, gastrostomies, enterostomies) for patients with chronic conditions who are unable to be fed orally.