IOANNIS I. KYRIAZIS

Dr. IOANNIS I. KYRIAZIS

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Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 September 2020 in Journal of Surgical Case Reports
Verified
Journal Article
Open access
ASAndreas Skarpas
Andreas Skarpas
PSPetros Siaperas
Petros Siaperas
AZAthanasios Zoikas
Athanasios Zoikas
EGEmmanouela Griva
Emmanouela Griva
IKIOANNIS I. KYRIAZIS
IOANNIS I. KYRIAZIS
IKIoannis Karanikas
Ioannis Karanikas
Meckel’s Diverticulum is a sac-like protrusion of the intestinal wall. It is located at 40–60 cm from the caecum. In the majority of cases, Meckel’s Diverticulum is clinically silent, while complications are found in 4% of the population. Complicated diverticulitis is associated with the formation of abscess, fistula, bowel obstruction or frank perforation. We present a case of a 63-year-old woman with a distended abdomen, pain in the lower right abdominal quadrant, fever 37°C and where emergency exploratory laparotomy revealed that obstruction was caused by a bowel loop trapped by a mesenterium-diverticular band.

11 July 2024 in Life
Verified
Journal Article
Open access
PDF file
SKStamatios Katsimperis
Stamatios Katsimperis
APAlexandros Pinitas
Alexandros Pinitas
MZMaria Zerva
Maria Zerva
TBThemistoklis Bellos
Themistoklis Bellos
IMIoannis Manolitsis
Ioannis Manolitsis
LTLazaros Tzelves
Lazaros Tzelves
Prostate cancer is the second most common cancer among men, with many treatment modalities available for patients, such as radical prostatectomy, external beam radiotherapy, brachytherapy, high-intensity focused ultrasound, cryotherapy, electroporation and other whole-gland or focal ablative novel techniques. Unfortunately, up to 60% of men with prostate cancer experience recurrence at 5 to 10 years. Salvage radical prostatectomy can be offered as an option in the setting of recurrence after a primary non-surgical treatment. However, the complexity of salvage radical prostatectomy is considered to be greater than that of primary surgery, making it the least popular treatment of choice. With the wide use of robotic platforms in urologic oncologic surgery, salvage radical prostatectomy has attracted attention again because, compared to past data, modern series involving salvage Robot-Assisted Radical Prostatectomy have shown promising results. In this narrative literature review, we comprehensively examined data on salvage radical prostatectomy. We investigated the correlation between the different types of primary prostate cancer therapy and the following salvage radical prostatectomy. Furthermore, we explored the concept of a robotic approach and its beneficial effect in salvage surgery. Lastly, we emphasized several promising avenues for future research in this field.

Verified
Journal Article
Open access
PDF file
IKIOANNIS I. KYRIAZIS
IOANNIS I. KYRIAZIS
TBThemistoklis Bellos
Themistoklis Bellos
SKStamatios Katsimperis
Stamatios Katsimperis
PAPanagiotis Angelopoulos
Panagiotis Angelopoulos
PNPanagiotis Neofytoy
Panagiotis Neofytoy
APAthanasios Papatsoris
Athanasios Papatsoris
Background: Androgen deprivation therapy (ADT) is a cornerstone treatment for advanced prostate cancer. While effective, traditional injectable luteinizing hormone-releasing hormone (LHRH) agonists are associated with an initial testosterone flare and potential cardiovascular risks. Relugolix is a novel, oral gonadotropin-releasing hormone (GnRH) antagonist developed to provide rapid suppression without a testosterone flare. This review synthesizes the latest evidence on the efficacy, safety, and clinical utility of relugolix. Methods: This non-systematic review was conducted via a search of PubMed and MEDLINE databases up to July 2025 using the terms “relugolix” AND “ADT” OR “Androgen Deprivation Therapy” AND “Prostate Cancer.” Only original studies in English were included.Results: The phase III HERO trial established the superiority of relugolix over leuprolide, demonstrating higher rates of sustained castration (96.7% vs 88.8%) and a significantly faster onset of action. Relugolix also showed a 54% reduction in major cardiovascular adverse events. Furthermore, it exhibited equivalent efficacy to injectable degarelix when combined with radiotherapy, but with more robust testosterone recovery after treatment cessation (52% vs 16%). Real-world data indicates high patient adherence to the oral regimen, and a cost-effectiveness analysis suggests it is a cost-effective option despite a higher drug cost. Conclusions: Relugolix represents a significant advancement in ADT, offering a potent, oral alternative with a rapid onset of action, a superior cardiovascular safety profile, and improved testosterone recovery. It provides clinicians with a valuable option for treating advanced prostate cancer, particularly in patients with cardiovascular comorbidities.

21 November 2025 in Medicina
Verified
Journal Article
Open access
PDF file
PTPanagiotis Triantafyllou Triantafyllou
Panagiotis Triantafyllou Triantafyllou
PAPolyvios Arseniou
Polyvios Arseniou
SKStamatios Katsimperis
Stamatios Katsimperis
IKIOANNIS I. KYRIAZIS
IOANNIS I. KYRIAZIS
IMIoannis Manolitsis
Ioannis Manolitsis
ASAndreas Skolarikos
Andreas Skolarikos
Background and Objectives: Aquablation, a robot-assisted, heat-free resection technique, has emerged as a promising minimally invasive surgical therapy (MIST) for benign prostatic hyperplasia (BPH). Its precision and potential for preservation of sexual function distinguish it from traditional surgical options. This systematic review aimed to evaluate the safety profile of Aquablation, with emphasis on perioperative complications and functional outcomes. Materials and Methods: We systematically searched PubMed/MEDLINE, Scopus, and the Cochrane Library through June 2025 in accordance with PRISMA 2020 guidelines (PROSPERO CRD420251074479). Eligible studies included randomized and non-randomized trials of Aquablation in men with BPH, reporting adverse events by type, frequency, or severity. Risk of bias was assessed with ROB-2 and ROBINS-I tools. Results: Forty-seven studies were included, spanning randomized controlled and prospective observational designs. Most complications were minor (Clavien-Dindo grade 1–2). Bleeding was the most frequent perioperative event, with transfusion required in 1–8% of cases, more often in large prostates. Severe complications (grade ≥ 3) were uncommon and usually related to bleeding or urinary retention. Long-term sequelae such as strictures or bladder neck contracture were rare. Compared with transurethral resection of the prostate, Aquablation yielded lower rates of ejaculatory dysfunction (10% vs. 36%), with continence and erectile function largely preserved. Outcomes were comparable to holmium laser enucleation, but Aquablation demonstrated superior ejaculatory preservation. Conclusions: Aquablation demonstrates a favorable safety profile across prostate sizes, with its greatest advantage being preservation of sexual function. While bleeding remains the principal perioperative concern, life-threatening events are rare. Further independent, long-term comparative studies are warranted.

1 July 2022 in Hellenic Urology
Verified
Journal Article
Open access
IKIOANNIS I. KYRIAZIS
IOANNIS I. KYRIAZIS
IMIoannis S. Manolitsis
Ioannis S. Manolitsis
TBThemistoklis Ch Bellos
Themistoklis Ch Bellos
SKStamatios N. Katsimperis
Stamatios N. Katsimperis
PAPanagiotis A. Angelopoulos
Panagiotis A. Angelopoulos
CDCharalampos N. Deliveliotis
Charalampos N. Deliveliotis
Primary urethral cancer is a rare but highly aggressive malignancy. Risk factors include chronic inflammation and irritation of the urethra. In early stages, this type of cancer presents with nonspecific symptoms, which can be misleading and associated with urethral strictures. We report a case of a 66-year-old male with a history of urethral stricture who presented with a perineal abscess of unknown origin. During the process of treatment, he was diagnosed with primary urethral carcinoma. Salvage therapy immediately followed, including surgery and radiation, but during the follow-up, the patient developed distant metastases and died 2 years after initial diagnosis.