Konstantinos Kakounis

Mr. Konstantinos Kakounis


Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

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

Representative Publications

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Journal Article
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ATAlexandra Triantafyllou
Alexandra Triantafyllou
EMEvgenia Mela
Evgenia Mela
CTCharalampos Theodoropoulos
Charalampos Theodoropoulos
ATAndreas - Panayiotis Theodorou
Andreas - Panayiotis Theodorou
EKELENI KITSOU
ELENI KITSOU
DTDimitrios A. Theodorou
Dimitrios A. Theodorou
Background/Objectives: Anastomotic leakage is one of the most frightening and potentially fatal complications after esophagectomy. The collaboration between the surgical team, interventional gastroenterologists, and radiologists has the potential to improve the hospital stay, as well as morbidity and mortality. The aim of this study is to present our experience and evaluate the results of the multimodal management of anastomotic leak following esophagectomy in our unit. Methods: This is a retrospective study analyzing a single referral center’s prospectively maintained database of all patients diagnosed with anastomotic leak between March 2019 and March 2025 using the definition of the Esophageal Complications Consensus Group. The treatment pathways and the patient outcomes are presented. The primary endpoint was 90-day mortality and in-hospital mortality. Results: A total of 241 esophageal resections were performed between March 2019 and March 2025. Lymphadenectomy of the mediastinum was performed in 88.4% of the patients. Cervical and intrathoracic anastomosis were performed in 143 (59.3%) and 98 (40.7%) cases, respectively. Twenty-nine patients (12%) with a mean age of 59.1 years developed anastomotic leak. Anastomotic leak occurred in 14.3% of intrathoracic anastomoses and 10.5% of cervical anastomoses. The median day of leak diagnosis was the sixth postoperative day. Leak management involved conservative strategies, wound exploration, endoscopic stent placement or vacuum therapy, drainage of effusions under radiologic guidance, and reoperation. The 90-day and in-hospital mortality rate was 3.4%. No cases of conduit necrosis or mediastinitis were reported. Endoscopic management was employed in 18 patients (62.1%) as a first- or second-line treatment, while reoperation was required in 6 patients (20.7%). The median interval from diagnosis to anastomosis healing was 21 days and the median duration of hospital stay 32 days. The management was successful in 27 patients (93.1%) except for 1 who developed tracheoesophageal fistula and 1 who died due to hemorrhagic complication of anticoagulant treatment. Conclusions: Anastomotic leak after esophagectomy is considered a complex, diversified, and morbid clinical entity. The evolving potential of multidisciplinary management encompassing surgical and interventional radiological and endoscopic treatment addresses the mortality rates and heralds a new era of minimizing morbidity.

10 February 2026 in Medicina
Verified
Journal Article
Open access
PDF file
KSKonstantinos Saliaris
Konstantinos Saliaris
SKSofia Katsila
Sofia Katsila
TTTania Triantafyllou
Tania Triantafyllou
EKEleni S. Kitsou
Eleni S. Kitsou
KKKonstantinos Kakounis
Konstantinos Kakounis
DTDimitrios A. Theodorou
Dimitrios A. Theodorou
Background and Objectives: Anastomotic leak following total gastrectomy and Roux-en-Y reconstruction remains a challenging and potentially morbid clinical scenario. Systemic support and resuscitation with simultaneous local sepsis control remain pillars of treatment. The therapeutic strategy may vary among different centers depending on the severity of clinical presentation, the degree of contamination and the hospital resources. The aim of this study is to introduce the rendezvous stenting technique, which combines washout of the abdominal cavity and endoscopic stenting under direct vision in selected patients who require reoperation. Materials and Methods: A retrospective descriptive analysis of severely ill patients suffering an anastomotic leak from an esophagojejunal anastomosis, who had been operated on in our department during the last five years was performed. Patient demographics, perioperative data and surgical outcomes were collected. Results: Since 2018, six anastomotic leak patients underwent stenting of anastomotic leak using the rendezvous technique during reoperation. Stenting was effective in controlling local contamination in five out of six patients (83.3%). One patient required repeat stent placement due to improper stent width. Conclusions: Anastomotic stenting using the rendezvous technique is a safe and feasible technique. Combining drainage of the abdominal cavity and stent fixation allows for control of the contaminated field as well as minimizing the risk of stent migration.