Doctors for Colon cancer in Attica

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.

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.

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.

Stratigos Panagiotis is a General Surgeon and sees patients for consultation at the outpatient Surgical Clinic of the private Lumedica clinic in Peristeri. He holds a PhD from the National and Kapodistrian University of Athens and is a graduate of the Medical School of the same university. He specialized in General Surgery at the following hospitals: General Hospital of Piraeus "Tzaneio," General Hospital of Nikaia "Agios Panteleimon," and 251 Air Force General Hospital. Since 2007, he has been serving at the General Hospital of Athens "Elpis," where he currently holds the position of Director of General Surgery. He has served as Senior Registrar (Grade A and B) at the General Hospitals of Athens "Elpis," Mytilene, and Lemnos, and has also worked as a Locum General Surgeon in MULTIPLE hospitals in the United Kingdom. His specialization is General Surgery, with a particular interest in modern surgical techniques. He is a member of the Athens Medical Association, the General Medical Council (UK), and the International Society of Surgery (ISS-SIC).

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.

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. 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. 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 completed more than 3,500 surgeries.

He maintains a private practice in Marousi.

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 a Doctorate in Medicine and subsequently obtained numerous university diplomas in France, including specializations in digestive system 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 using minimally invasive techniques. He currently offers his services at the Athens Medical Center in Marousi.

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

He is fluent in French and English.

Kaloxristianakis Nikolaos is a General Surgeon and Director of the 6th Surgical Clinic at Errikos Dunant Hospital Center. He has specialization and extensive experience in advanced laparoscopic surgery of abdominal wall hernias and the digestive system (gallbladder, large and small intestine, stomach), as well as in diseases of the anus. He is a member of the Hellenic and European Societies of Endoscopic Surgery and the European Hernia Society (EHS) and maintains an active presence at international conferences in the field of Laparoscopic Surgery.

Ο Σαρρής Ευάγγελος είναι Ογκολόγος και διατηρεί ιατρείο στον Πειραιά. Είναι πτυχιούχος της Ιατρικής Σχολής Αθηνών και κάτοχος μεταπτυχιακού διπλώματος Ειδίκευσης στην Ογκολογία Θώρακος από την Ιατρική Σχολή του Εθνικού και Καποδιστριακού Πανεπιστημίου Αθηνών. Έλαβε την ειδικότητα της Παθολογικής Ογκολογίας το 2020, επιτυγχάνοντας εξαιρετική βαθμολογία (96/100) στις εξετάσεις για την απόκτηση του τίτλου ειδικότητας, ενώ το 2024 επιλέχθηκε να συμμετέχει στην ακαδημία του IASLC (International Association for the Study of Lung Cancer) ανάμεσα σε διακεκριμένους συναδέλφους με ειδίκευση στην Ογκολογία Θώρακος παγκοσμίως. Έχει πολυετή κλινική εμπειρία στην Ογκολογία, υπηρετώντας ως ειδικευόμενος και αργότερα ως επιμελητής σε αναγνωρισμένα νοσοκομεία της Αθήνας, ενώ εργάζεται ως Επιμελητής Παθολόγος - Ογκολόγος στην Δ' Ογκολογική Κλινική και Πρότυπο Κέντρο Κλινικών Μελετών του Metropolitan Hospital. Παράλληλα, είναι ενεργό μέλος σε ελληνικές και διεθνείς επιστημονικές εταιρείες (ESMO, IASLC, HeSMO, HeCOG) και συντονιστής του Ογκολογικού Συμβουλίου για τον Καρκίνο του Πνεύμονα στο Metropolitan Hospital. Διαθέτει σημαντικό ερευνητικό έργο, με πλούσια συγγραφική δραστηριότητα σε διεθνή επιστημονικά περιοδικά, ενώ έχει συμμετέχει ως ομιλητής σε πολυάριθμα Ελληνικά και διεθνή συνέδρια Ογκολογίας. Συμμετέχει ενεργά σε διεθνή προγράμματα, όπως το HORIZON 2020 – I3LUNG, καθώς και σε πολυάριθμες διεθνείς φάσεως ΙΙ και ΙΙΙ κλινικές μελέτες για τον καρκίνο του πνεύμονα, μεταξύ των οποίων η INTerpath-009, που αξιολογεί την αποτελεσματικότητα του mRNA εμβολίου V940 σε συνδυασμό με ανοσοθεραπεία σε ασθενείς με εξαιρέσιμο μη - μικροκυτταρικό καρκίνο του πνεύμονα μετά από εισαγωγική χημειοανοσοθεραπεία, και η μελέτη ARTEMIA, που συγκρίνει την αποτελεσματικότητα του πεπτιδικού εμβολίου OSE2101 έναντι της κλασικής χημειοθεραπείας σε ασθενείς με προχωρημένο μη - μικροκυτταρικό καρκίνο του πνεύμονα και δευτερογενή αντίσταση στην ανοσοθεραπεία. Η επιστημονική του προσέγγιση συνδυάζει την εξατομικευμένη ιατρική με τη σύγχρονη κλινική έρευνα, προσφέροντας στους ασθενείς του πρόσβαση σε καινοτόμες θεραπείες και υψηλού επιπέδου ογκολογική φροντίδα.

Maria Mixailidou MD, FACS, FASCRS is a General Surgeon maintaining a private practice within the HYGEIA Hospital in Marousi. She studied at the Medical School of the University of Patras and continued her medical training in the USA. There, she conducted clinical research in the Department of Emergency Surgery, Trauma, and Critical Care at Massachusetts General Hospital in Boston, under Harvard University, and specialized in General Surgery at the University of Arizona. Additionally, she specialized in Colon and Rectal Surgery at Penn State University. She is board-certified by the American Board of Surgery in General Surgery and by the American Board of Colon and Rectal Surgery. She possesses significant clinical experience having worked in clinics in the USA, as well as extensive scientific and research experience, reflected in numerous publications in international scientific journals and chapters she has authored in international surgical textbooks.