Panagiotis Dorovinis

Dr. Panagiotis Dorovinis

Laiko General Hospital of Athens
orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

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

Representative Publications

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24 February 2022 in Journal of Gastrointestinal Cancer
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KPKonstantina Papadopoulou
Konstantina Papadopoulou
PDPanagiotis Dorovinis
Panagiotis Dorovinis
SKStylianos Kykalos
Stylianos Kykalos
DSDimitrios Schizas
Dimitrios Schizas
PSParaskevas Stamopoulos
Paraskevas Stamopoulos
NNNikolaos Nikiteas
Nikolaos Nikiteas

24 October 2021 in Journal of Clinical Medicine
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PDPanagiotis Dorovinis
Panagiotis Dorovinis
Nikolaos MachairasNikolaos Machairas
Nikolaos Machairas
Stylianos KykalosStylianos Kykalos
Stylianos Kykalos
PSParaskevas Stamopoulos
Paraskevas Stamopoulos
SVSpyridon Vernadakis
Spyridon Vernadakis
GSGeorgios Sotiropoulos
Georgios Sotiropoulos
Resection of the caudate lobe of the liver is considered a highly challenging type of liver resection due to the region’s intimacy with critical vascular structures and deep anatomic location inside the abdominal cavity. Laparoscopic resection of the caudate lobe is considered one of the most challenging laparoscopic liver procedures. The objective of our systematic review was to evaluate the safety, technical feasibility and main outcomes of laparoscopic caudate lobectomy LCL. A systematic review of the literature was undertaken for studies published until September 2021. A total of 20 studies comprising 221 patients were included. Of these subjects, 36% were women, whereas the vast majority of resections (66%) were performed for malignant tumors. Tumor size varied significantly between 2 and 160 mm in the largest diameter. The mean operative time was 210 min (range 60–740 min), and estimated blood loss was 173.6 mL (range 50–3600 mL). The median hospital length of stay LOS was 6.5 days (range 2–15 days). Seven cases of conversion to open were reported. The vast majority of patients (93.7%) underwent complete resection (R0) of their tumors. Thirty-six out of 221 patients developed postoperative complications, with 5.8% of all patients developing a major complication (Clavien–Dindo classification ≥ III).No perioperative deaths were reported by the included studies. LCL seems to be a safe and feasible alternative to open caudate lobectomy OCL in selected patients when undertaken in high-volume centers by experienced surgeons.

16 December 2022 in World Journal of Emergency Surgery
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Belinda De SimoneBelinda De Simone
Belinda De Simone
FAFikri M. Abu-Zidan
Fikri M. Abu-Zidan
ECElie Chouillard
Elie Chouillard
SSSalomone Di Saverio
Salomone Di Saverio
MSMassimo Sartelli
Massimo Sartelli
Fausto CatenaFausto Catena
Fausto Catena
Background: The incidence of the highly morbid and potentially lethal gangrenous cholecystitis was reportedly increased during the COVID-19 pandemic. The aim of the ChoCO-W study was to compare the clinical findings and outcomes of acute cholecystitis in patients who had COVID-19 disease with those who did not. Methods: Data were prospectively collected over 6 months (October 1, 2020, to April 30, 2021) with 1-month follow-up. In October 2020, Delta variant of SARS CoV-2 was isolated for the first time. Demographic and clinical data were analyzed and reported according to the STROBE guidelines. Baseline characteristics and clinical outcomes of patients who had COVID-19 were compared with those who did not. Results: A total of 2893 patients, from 42 countries, 218 centers, involved, with a median age of 61.3 (SD: 17.39) years were prospectively enrolled in this study; 1481 (51%) patients were males. One hundred and eighty (6.9%) patients were COVID-19 positive, while 2412 (93.1%) were negative. Concomitant preexisting diseases including cardiovascular diseases (p < 0.0001), diabetes (p < 0.0001), and severe chronic obstructive airway disease (p = 0.005) were significantly more frequent in the COVID-19 group. Markers of sepsis severity including ARDS (p < 0.0001), PIPAS score (p < 0.0001), WSES sepsis score (p < 0.0001), qSOFA (p < 0.0001), and Tokyo classification of severity of acute cholecystitis (p < 0.0001) were significantly higher in the COVID-19 group. The COVID-19 group had significantly higher postoperative complications (32.2% compared with 11.7%, p < 0.0001), longer mean hospital stay (13.21 compared with 6.51 days, p < 0.0001), and mortality rate (13.4% compared with 1.7%, p < 0.0001). The incidence of gangrenous cholecystitis was doubled in the COVID-19 group (40.7% compared with 22.3%). The mean wall thickness of the gallbladder was significantly higher in the COVID-19 group [6.32 (SD: 2.44) mm compared with 5.4 (SD: 3.45) mm; p < 0.0001]. Conclusions: The incidence of gangrenous cholecystitis is higher in COVID patients compared with non-COVID patients admitted to the emergency department with acute cholecystitis. Gangrenous cholecystitis in COVID patients is associated with high-grade Clavien-Dindo postoperative complications, longer hospital stay and higher mortality rate. The open cholecystectomy rate is higher in COVID compared with non -COVID patients. It is recommended to delay the surgical treatment in COVID patients, when it is possible, to decrease morbidity and mortality rates. COVID-19 infection and gangrenous cholecystistis are not absolute contraindications to perform laparoscopic cholecystectomy, in a case by case evaluation, in expert hands. Graphical
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2 November 2022 in Cancers
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Nikolaos MachairasNikolaos Machairas
Nikolaos Machairas
DPDimitrios Papaconstantinou
Dimitrios Papaconstantinou
PDPanagiotis Dorovinis
Panagiotis Dorovinis
Diamantis I. TsilimigrasDiamantis I. Tsilimigras
Diamantis I. Tsilimigras
MKMyrto D. Keramida
Myrto D. Keramida
Tim PawlikTim Pawlik
Tim Pawlik
Hepatocellular carcinoma (HCC) is the most common primary hepatic malignancy and a leading cause of cancer-related death in both the developed and developing world. Recurrent HCC (rHCC) develops in a significant proportion of patients even following curative-intent resection. In the absence of a structured treatment algorithm, a number of treatment options including repeat hepatectomy (RH) and radiofrequency ablation (RFA) have been utilized in select patients with rHCC. The aim of this systematic review and meta-analysis was to compare short- and long-term outcomes of patients undergoing RHR versus RFA for rHCC. Four electronic databases were screened until September 2022. A total of 17 studies were included in the meta-analysis. Overall and disease-free survival were comparable among the two groups. Patients undergoing RH were less likely to develop a second recurrence (RR 0.89, 95% C.I. 0.81 to 0.98, p = 0.02). Overall and major morbidity were significantly increased in the RH group (RR 3.01, 95% C.I. 1.98 to 4.56, p < 0.001 and RR 3.65, 95% C.I. 2.07 to 6.43, p < 0.001, respectively), while mortality was similar between RFA and RH. The data demonstrated that RFA is a safe and efficient alternative to RH for selected patients with rHCC. Nevertheless, despite higher morbidity associated with RH, repeat resection remains the preferred treatment option whenever feasible, as it allows for better local disease control.

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PDPanagiotis Dorovinis
Panagiotis Dorovinis
Nikolaos MachairasNikolaos Machairas
Nikolaos Machairas
ATAlexios Terra
Alexios Terra
IPIfaistion Palios
Ifaistion Palios
SKStylianos Kykalos
Stylianos Kykalos
DDDimitrios Dimitroulis
Dimitrios Dimitroulis
Perihilar cholangiocarcinoma (pCCA) is the most common subtype of a rare malignancy arising from the biliary tract. Its challenging diagnosis results in delayed treatment, most often when the disease is locally advanced or widespread. Management includes surgery followed by systemic chemotherapy; however, a negative resection margin (R0) is the mainstay for achieving an adequate survival benefit, in the absence of metastatic disease. While minimally invasive surgery (MIS) initially is adopted across every surgical field, laparoscopy’s inherent limitations hinder its implementation for the treatment of pCCA and results in skepticism even for the robotic approach. However, since its initial feasibility phase fifteen years ago, comparable results to open surgery have been reported regarding its safety and oncologic outcomes, in highly selected patients. Moreover, the robotic approach seems to be associated with favorable outcomes regarding post-operative complications, length of hospital stay, and estimated blood loss. International guidelines for the diagnosis and management of pCCA, centralization, definition of a learning curve for MIS, and more comparative studies assessing long term outcomes and randomization are key elements to ensure patient’s safety and technical efficiency. The aim of our review is to provide an updated perspective of the existing literature in the utilization of MIS for patients with pCCA.

18 February 2021 in Surgical Innovation
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Stylianos KykalosStylianos Kykalos
Stylianos Kykalos
Nikolaos MachairasNikolaos Machairas
Nikolaos Machairas
ENEvangelia Ntikoudi
Evangelia Ntikoudi
PDPanagiotis Dorovinis
Panagiotis Dorovinis
EMErnesto P Molmenti
Ernesto P Molmenti
GSGeorgios C Sotiropoulos
Georgios C Sotiropoulos
Cirrhosis has a strong association with abdominal wall hernias, especially in the presence of concomitant ascites. Major predisposing factors for hernia formation in this particular group of patients include increased intra-abdominal pressure and decreased muscle mass due to poor nutrition. Management of these patients is highly challenging and requires an experienced multidisciplinary surgical and medical approach. The aim of our review is to clarify crucial diagnostic and management approaches. Crucial medical and technical issues on this topic are widely discussed with special focus on indication, timing, and type of surgical repair, with an additional reference to the actual role of laparoscopy.