Doctors for Colon cancer in Attica

Mitsogianni Maria is an Internal Medicine - Oncology Specialist based at YGEIA-MITERA Hospitals in Marousi. She graduated from the Medical School of the National and Kapodistrian University of Athens and completed the postgraduate program "Thoracic Oncology" as well as her doctoral thesis at the same university.

She has worked for 7 years in Germany at Klinikum Oldenburg, Johanniter Krankenhaus Rheinhausen, and Marienhospital Düsseldorf, specializing in the fields of Medical Oncology and Palliative Care. In Greece, she has worked at the Oncology Hospital of Kifisia "Agioi Anargyroi" and served as a collaborator at the Oncology Unit of the "Sotiria" Hospital.

She holds the ESMO Examination Certificate from the European Society for Medical Oncology.

She has attended numerous conferences and educational seminars both in Greece and internationally, has a significant number of international publications, and participates as a lecturer in postgraduate programs at the University of Athens.

Since 2022, she has been a collaborator and Head of Clinical Studies at the 4th Medical Oncology Clinic of DTKA YGEIA and is the attending physician at MITERA Hospital.

Ioumpas Leon is a General Surgeon and maintains a private practice in Kolonos. He graduated from the Medical School of Cluj Napoca in Romania and obtained his specialty in general surgery at the General Hospital of Athens "Evangelismos," in the 3rd Surgical Clinic - Laparoscopic Unit. Currently, he is a Scientific Collaborator at Hygeia Hospital, the "Eugenideio" Therapeutic Center, the "Attiko Therapeutic Center," as well as the private hospital "Mitera." He manages cases across the full spectrum of general surgery, including the diagnosis, laparoscopy, and surgical treatment of the colon, stomach, and pancreas. Additionally, he performs thyroidectomies, appendectomies, hemorrhoidectomies, and cholecystectomies, as well as all types of hernia repairs and provides comprehensive information and evidence-based surgical management plans for patients with skin tumors, such as melanomas and lipomas. Finally, his private practice offers the possibility of performing minor procedures, bloodlessly and under local anesthesia, such as removal of skin tumors - cysts, skin nevi, biopsies, ingrown nails, and treatment of telangiectasias.

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.

Ο Τριανταφυλλίδης Αλέξανδρος είναι Γενικός χειρουργός εξειδικευμένος στην ελάχιστα επεμβατική χειρουργική (MIS) και διατηρεί ιδιωτικό ιατρείο στους Αμπελόκηπους (εντός του Νοσοκομείου Ερρίκος Ντυνάν). Είναι απόφοιτος του Αριστοτέλειου Πανεπιστημίου Θεσσαλονίκης (ΑΠΘ) με μεταπτυχιακό στο Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Ολοκλήρωσε την ειδίκευσή του τόσο στην περιφέρεια (Δράμα) όσο και στην Αθήνα, αποκτώντας εμπειρία στη λαπαροσκοπική και ελάχιστα επεμβατική χειρουργική, ενώ έχει λάβει επιπλέον μετεκπαίδευση στη χειρουργική ογκολογία. Τέλος, ο ιατρός είναι τακτικό μέλος της Ελληνικής Χειρουργικής Εταιρίας.

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.

Dr. Konstantinos Xydis, BSc, MD, MSc, PhD, is a Radiation Oncologist with many years of experience in Germany, not only in the treatment of malignant diseases but also in the modern application of Low-Dose Radiation Therapy (LDRT) for benign musculoskeletal disorders.

He collaborates with the HYGEIA Hospital (Athens), IASIS – Gavrilakis General Clinic and Evangelisches Krankenhaus Wesel in Germany.

He completed his specialization at Metaxa Oncology Hospital in Greece and at the University Hospital Essen in Germany.

He has served as Senior Consultant (Attending Physician) and Consultant at the University Hospital Essen in Germany and as Director at Evangelisches Krankenhaus Wesel in Germany.

He has extensive experience in radiation therapy for musculoskeletal conditions such as knee and hip osteoarthritis, heel spur, and elbow epicondylitis (tennis/golf elbow).

Dr. Konstantinos Xydis, BSc, MD, MSc, PhD, ist Facharzt für Strahlentherapie und Radioonkologie mit langjähriger Erfahrung in Deutschland – nicht nur in der Behandlung bösartiger Erkrankungen, sondern auch in der modernen Anwendung der Niedrigdosis-Strahlentherapie (Low-Dose Radiation Therapy – LDRT) bei gutartigen Erkrankungen des Bewegungsapparates.

Er kooperiert mit dem HYGEIA-Krankenhaus (Athen), der IASIS – Allgemeine Klinik Gavrilakis sowie dem Evangelischen Krankenhaus Wesel in Deutschland.

Seine Facharztausbildung absolvierte er im Onkologischen Krankenhaus „Metaxa“ in Griechenland sowie am Universitätsklinikum Essen in Deutschland.

Er war als Oberarzt und Facharzt am Universitätsklinikum Essen tätig sowie als Chefarzt am Evangelischen Krankenhaus Wesel in Deutschland.

Er verfügt über umfangreiche Erfahrung in der Strahlentherapie bei Erkrankungen des Bewegungsapparates wie Knie- und Hüftarthrose, Fersensporn sowie Epicondylitis des Ellenbogens (Tennis- bzw. Golferellenbogen).

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.

Dr Liagkos Th Georgios, MD, PhD, is a General Surgeon - Proctologist, graduate of the Medical School of Patras, and has been awarded the distinction of Outstanding Doctorate from the Medical School of the National and Kapodistrian University of Athens. He is the Director of the 2nd Surgical Clinic for Anorectal Diseases at the Lumedica group and a Scientific Collaborating Surgeon - Proctologist at Metropolitan Hospital in Neo Faliro and Therapis in Athens. He maintains private practices in Aigaleo and Lamia. He is a certified member of the American College of Surgeons (ATLS - ACS Committee on Trauma) and an active member of the Hellenic Surgical Society, the Hellenic Society of Endoscopic Surgery & Other Minimally Invasive Techniques, the Hellenic Society of Coloproctology, and the Hellenic Phlebology Society. He has specialized in Surgical Treatment of Anorectal Diseases and Intestinal Surgery at the General State Hospital of Nikaia, and has undergone additional training in Advanced Laparoscopic Surgery and Minimally Invasive Surgery of Abdominal Wall Hernias. Additionally, he is certified in the use of modern optical fiber Laser, radiofrequency (RF), and ultrasound (HAL) techniques in the surgical management of anorectal diseases (coccygeal cyst, hemorrhoids, perianal fistula-abscess, anal fissure, condylomas). Annually, he is a speaker and contributor of presentations at numerous postgraduate seminars and conferences both abroad and in Greece, staying informed primarily on current advances in Proctology and Minimally Invasive Surgery. Since 2017, he has served as a reviewer for the American Surgical Journal & Trauma Cases and Reviews, and in 2023, he announced the first worldwide publication presenting new data on the modern treatment of coccygeal cyst using Laser with the new Infinate Ring fiber.

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.

Panagiotakis Emmanouil MD, PhD is a General Surgeon with a private practice in Marousi. He holds a degree from the Medical School of Aristotle University of Thessaloniki and a doctoral degree from the Department of General, Oncological Surgery and Visceral Surgery at the University of Hannover. He specialized at a major Oncology Center in Bremen, Germany (Klinikum Bremen Mitte - Academic Hospital of the University of Gottingen), and has also obtained subspecialty certification in proctology following examinations in Germany. He has worked as an Attending Physician at Klinikum Bremen Mitte, Gesundheit Nord in Germany, and currently serves as an Attending Physician at Iaso General Clinic. He has extensive experience (2011 to 2023) in the management of oncological patients, patients with chronic inflammatory bowel diseases (Crohn’s disease, ulcerative colitis), patients with proctological conditions, as well as patients with benign conditions (e.g., hernias, gallbladder). Finally, the physician is a member of the European Society of Coloproctology.

Xouliaras Xristos MD, MSc is a General Surgeon who maintains a private practice in Marousi. He is a graduate of the Medical School of the University of Patras. He specialized at the 1st Surgical Clinic of the General Hospital of Nikaia and obtained his specialty title in General Surgery. He acquired specialized experience in Surgical Oncology at the "Metaxa" Anti-Cancer Hospital of Piraeus. He holds a Master's degree in Colon and Rectal Surgery from the Medical School of Larissa and has completed numerous postgraduate courses and seminars. He received clinical training in Colorectal Surgery (Clinical Visiting Fellowship in Colorectal Surgery) at St Mark's Academic Institute in London and clinical training in Surgery (Clinical Traineeship) at Pavol Jozef Šafárik University, as well as in Surgical Oncology (Trainee Fellowship in Surgical Oncology) at the National Oncology Institute in Bratislava. Additionally, he trained in Robotic Surgery and Robotic Colorectal Surgery at IRCAD (Strasbourg, France). He specializes in Laparoscopic Colorectal Surgery, Proctology, and Emergency Abdominal Surgery. He applies modern laser treatment methods for anorectal conditions (hemorrhoids, perianal fistula, pilonidal cyst, anal fissure). The physician manages a wide range of cases, always focusing on providing the best possible care tailored to each patient’s needs.

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.

Dr. Ioannis Zouridakis, MD, MSc, is a General Surgeon and Breast Specialist who has maintained a private practice in Korydallos since 1994 and recently within REA Hospital. He is a Scientific Collaborator and a PhD candidate at the Medical School of the National and Kapodistrian University of Athens. He earned his medical degree in 1986 from the University of Rome “La Sapienza” with a doctoral thesis completed during his studies. He specialized in General Surgery at the General Hospital of Athens "Evangelismos" and further specialized in Laparoscopic Surgery at the University of Montpellier in France. He attended the European Advanced Level Course in Breast Disease Management for Surgeons in Athens and specialized in the treatment of breast diseases at the 6th Oncology Hospital "G. Gennimatas." Subsequently, he specialized in hernia surgery using dual mesh PHS & Prolene 3D Patch at Umberto I Hospital in Italy and also specialized in Minimally Invasive Operating Techniques in Colorectal Surgery. He has worked in numerous hospitals and clinics and has served for many years as the Director of the Surgical Clinic at Metropolitan Hospital. Currently, he works daily as a Surgeon – Laparoscopist – Breast Specialist (Consultant Surgeon) at the General and Maternity Hospital REA, one of the most modern hospitals in Greece. Finally, he has attended and participated in over 100 medical conferences in Greece and abroad.

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.

Ziozia Vasiliki is a General Surgeon, Senior Registrar of the 1st Surgical Clinic at IASO and maintains a private practice in Nea Irakleio. She holds a degree from the Medical School of the National and Kapodistrian University of Athens and a Master's degree in "Surgical Anatomy" from the Medical School of the National and Kapodistrian University of Athens. Dr. Ziozia has received a scholarship from the Hellenic Surgical Society to obtain her postgraduate degree, as well as a scholarship from the Hellenic Society of Coloproctology for specialization in colorectal and anal surgery at St Thomas’ Hospital in London. She initially specialized in Surgery at the General Hospital of Rethymno and subsequently at the General Hospital of Athens "Evangelismos." During 2022-23, she served as a Senior Clinical Fellow in the Colorectal Department at St Thomas’ Hospital in London. Dr. Ziozia has participated in numerous conferences, seminars, and courses and has authored many publications, as well as oral and poster presentations. Finally, she is a member of the Hellenic Society of Coloproctology.

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.