Dan Dumitrescu

Dr. Dan Dumitrescu

Surgery IV, University Emergency Hospital from Bucharest, Bucharest, Bucureşti, Romania
orcid

Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

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

Representative Publications

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8 May 2009 in Natural Computing
Verified
Journal Article
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RLRodica Ioana Lung
Rodica Ioana Lung
Dan DumitrescuDan Dumitrescu
Dan Dumitrescu

5 February 2024 in Diagnostics
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Journal Article
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PSPaul Lorin Stoica
Paul Lorin Stoica
Dragos SerbanDragos Serban
Dragos Serban
DBDan Georgian Bratu
Dan Georgian Bratu
CSCrenguta Serboiu
Crenguta Serboiu
DCDaniel Ovidiu Costea
Daniel Ovidiu Costea
BCBogdan Mihai Cristea
Bogdan Mihai Cristea
Laparoscopic cholecystectomy (LC) is the gold standard treatment in acute cholecystitis. However, one in six cases is expected to be difficult due to intense inflammation and suspected adherence to and involvement of adjacent important structures, which may predispose patients to higher risk of vascular and biliary injuries. In this study, we aimed to identify the preoperative parameters with predictive value for surgical difficulties. A retrospective study of 255 patients with acute cholecystitis admitted in emergency was performed between 2019 and 2023. Patients in the difficult laparoscopic cholecystectomy (DLC) group experienced more complications compared to the normal LC group (33.3% vs. 15.3%, p < 0.001). Age (p = 0.009), male sex (p = 0.03), diabetes (p = 0.02), delayed presentation (p = 0.03), fever (p = 0.004), and a positive Murphy sign (p = 0.007) were more frequently encountered in the DLC group. Total leukocytes, neutrophils, and the neutrophil-to-lymphocyte ratio (NLR) were significantly higher in the DLC group (p < 0.001, p = 0.001, p = 0.001 respectively). The Tongyoo score (AUC ROC of 0.856) and a multivariate model based on serum fibrinogen, thickness of the gallbladder wall, and transverse diameter of the gallbladder (AUC ROC of 0.802) showed a superior predictive power when compared to independent parameters. The predictive factors for DLC should be assessed preoperatively to optimize the therapeutic decision.

11 September 2024 in Medicina
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Journal Article
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ISIrina Shevchenko
Irina Shevchenko
CGCatalin Cicerone Grigorescu
Catalin Cicerone Grigorescu
Dragos SerbanDragos Serban
Dragos Serban
BCBogdan Mihai Cristea
Bogdan Mihai Cristea
Laurentiu SimionLaurentiu Simion
Laurentiu Simion
ADAna Dascalu
Ana Dascalu
Background and Objectives: Systemic inflammatory indices have been largely investigated for their potential predictive value in multiple inflammatory, infectious, and oncological diseases; however, their value in colorectal cancer is still a subject of research. This study investigates the dynamics of pre- and postoperative values of NLR, PLR, SII, and MLR in patients with colorectal cancer and their predictive value for early postoperative outcomes. Materials and Methods: A 2-year retrospective cohort study was performed on 200 patients operated for colorectal adenocarcinoma. Systemic inflammatory indices were calculated based on complete blood count preoperatively and on the first and sixth postoperative days. The patients were divided into two groups based on their emergency or elective presentation. The pre- and postoperative values of serum inflammatory biomarkers and their correlations with postoperative outcomes were separately analyzed for the two study subgroups. Results: There were no significant differences in sex distribution, addressability, associated comorbidities, or types of surgery between the two groups. Patients in the emergency group presented higher preoperative and postoperative values of WBC, neutrophils, NLR, and SII compared to elective patients. The postsurgery hospital stays correlated well with pre- and postoperative day one and day six values of NLR (p = 0.001; 0.02; and <0.001), PLR (p < 0.001), SII (p = 0.037; <0.001; <0.001), and MLR (p = 0.002; p = 0.002; <0.001). In a multivariate analysis, reintervention risk was higher for emergency presentation and anemia, and lower in right colon cancer. In the emergency group, a multivariate model including age, MLR PO1, and pTNM stage was predictive for severe postoperative complications (AUC ROC 0.818). First-day postoperative inflammatory indices correlated well with sepsis, with the best predictive value being observed for the first postoperative day NLR (AUC 0.836; sensibility 88.8%; specificity 66.7%) and SII (AUC 0.796; sensitivity 66.6%; specificity 90%). For elective patients, the first postoperative day PLR and anemia were included in a multivariate model to predict Clavien–Dindo complications graded 3 or more (AUC ROC 0.818) and reintervention (AUC ROC 0.796). Conclusions: Easy-to-calculate and inexpensive systemic inflammatory biomarkers could be useful in predicting early postoperative outcomes in colorectal cancer for both elective and emergency surgery.

Verified
Journal Article
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ISIrina Shevchenko
Irina Shevchenko
Dragos SerbanDragos Serban
Dragos Serban
Laurentiu SimionLaurentiu Simion
Laurentiu Simion
IMIon G. Motofei
Ion G. Motofei
BCBogdan Mihai Cristea
Bogdan Mihai Cristea
DCDaniel Ovidiu Costea
Daniel Ovidiu Costea
Background/Objectives: Colorectal cancer (CRC) is one of the most prevalent malignancies worldwide. Despite advancements in surgical techniques and oncological treatments, postoperative complications remain a significant challenge, affecting both immediate recovery and long-term survival. Systemic inflammation has been identified as a critical factor influencing cancer progression and postoperative outcomes. This systematic review evaluates the clinical significance of blood cell-derived inflammatory markers in predicting early and late postoperative complications in CRC patients. Methods: We included studies involving adult patients (≥18 years) with histologically confirmed colorectal cancer, for whom elective radical surgery was performed, as well as at least one of the considered blood-based inflammatory biomarkers (NLR, PLR, SII, or LMR) documented in relation to outcomes. Results: After removing duplicates, 19 studies published between 2016 and 2025 were included in the qualitative analysis. A total of 7023 patients who underwent elective curative surgery for colorectal cancer were analyzed, with mean age varying widely between 47.3 and 74.6 years. Preoperative NLR values were significantly correlated with severe complications, IAI, AL, and overall complications in 13 out of 19 studies (68.4%), with a cutoff value between 2.21 and 4, while early postoperative NLR values were predictive for AL. Late postoperative complications, such as recurrence and overall survival, were also associated with elevated preoperative NLR and PLR values. However, variability in study designs, patient populations, and cutoff values for these indices contributed to inconsistent findings. Conclusions: Blood cell-derived inflammatory markers offer a valuable, non-invasive tool for assessing postoperative risks in patients with CRC. New design nomograms or risk scores that include, beside blood cell-derived inflammation markers, other relevant data, could ensure an optimal predictive value that could be easily used in clinical practice for personalized risk management in patients with colorectal cancer.

30 June 2023 in Life
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BCBogdan Cristian Călinescu
Bogdan Cristian Călinescu
ANAdrian Neacsu
Adrian Neacsu
MEMARTINIUC ANA ELENA
MARTINIUC ANA ELENA
Dan DumitrescuDan Dumitrescu
Dan Dumitrescu
CSCatalina Diana Stănică
Catalina Diana Stănică
RIRaluca Gabriela Ioan
Raluca Gabriela Ioan
Stress urinary incontinence affects a large proportion of women in their lifetime. The objective of this review was to describe and compare the latest surgical trends in urinary incontinence and focus on the literature advantages, disadvantages, complications and efficacy of surgical procedures regarding this pathology. Using network meta-analysis, we have identified the most frequently used procedures (Burch surgery, midurethral sling and pubovaginal sling), and we have described and characterized them in terms of effectiveness and safety. Midurethral procedures remain the gold standard for surgical treatment of stress urinary incontinence, although the potential of serious complications following this procedure should be taken into consideration always. There is a clear need for a much more unified evaluation of possible complications and postoperative evolution. This process will help practitioners to adapt and individualize their strategy for each patient.

17 September 2024 in Journal of Personalized Medicine
Verified
Journal Article
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ADAna Dascalu
Ana Dascalu
CGCatalin Cicerone Grigorescu
Catalin Cicerone Grigorescu
Dragos SerbanDragos Serban
Dragos Serban
CTCorneliu Tudor
Corneliu Tudor
CACristina Alexandrescu
Cristina Alexandrescu
BCBogdan Mihai Cristea
Bogdan Mihai Cristea
Background/Objectives: Age-related macular degeneration (AMD) is one of the main causes of blindness and visual impairment worldwide. Intravitreal complement inhibitors are an emergent approach in the treatment of AMD, which have had encouraging results. This systematic review analyzes the outcomes and safety of complement inhibitor therapies for GA in AMD cases. Methods: A comprehensive search on the PubMed and Web of Science databases returned 18 studies involving various complement inhibitor agents, with a total of 4272 patients and a mean follow-up of 68.2 ± 20.4 weeks. Results: Most treated patients were white (96.8%) and female (55.8%), with a mean age of 78.3 ± 7.8 years and a mean GA area of 8.0 ± 3.9 mm2. There were no differences in visual function change between treated and control participants. The mean GA area change was 2.4 ± 0.7 mm2 in treated participants vs. 2.7 ± 0.8 mm2 in control groups (p < 0.001). The ocular and systemic side effects were similar to those of intravitreal anti-VEGF. A less-understood effect was that of the onset of choroidal neovascularization (CNV) in 1.1–13% of patients; this effect was found to be more frequent in patients with neovascular AMD in the fellow eye or nonexudative CNV in the study eye at baseline. Conclusions: Complement inhibitors may represent a useful therapy for GA in AMD, but a personalized approach to patient selection is necessary to optimize the outcomes.