Philippa Seika

Dr. Philippa Seika


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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12 August 2021 in Medicina
Verified
Journal Article
Open access
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SMSimon Moosburner
Simon Moosburner
MSMoritz Schmelzle
Moritz Schmelzle
WSWenzel Schöning
Wenzel Schöning
AKAnika Kästner
Anika Kästner
PSPhilippa Seika
Philippa Seika
SGSafak Gül-Klein
Safak Gül-Klein
Background and Objectives: In children, hepatoblastoma preferentially is managed by liver resection (LR). However, in irresectable cases, liver transplantation (LT) is required. The aim of our study was to compare short- and long-term results after LR and LT for the curative treatment of hepatoblastoma. Materials and Methods: Retrospective analysis of all patients treated surgically for hepatoblastoma from January 2000 until December 2019 was performed. Demographic and clinical data were collected before and after surgery. The primary endpoints were disease free survival and patient survival. Results: In total, 38 patients were included into our analysis (n = 28 for LR, n = 10 for LT) with a median follow-up of 5 years. 36 patients received chemotherapy prior to surgery. Total hospital stay and intensive care unit (ICU) stay were significantly longer within the LT vs. the LR group (ICU 23 vs. 4 days, hospital stay 34 vs. 16 days, respectively; p < 0.001). Surgical complications (≤Clavien–Dindo 3a) were equally distributed in both groups (60% vs. 57%; p = 1.00). Severe complications (≥Clavien–Dindo 3a) were more frequent after LT (50% vs. 21.4%; p = 0.11). Recurrence rates were 10.7% for LR and 0% for LT at 5 years after resection or transplantation (p = 0.94). Overall, 5-year survival was 90% for LT and 96% for LR (p = 0.44). Conclusions: In irresectable cases, liver transplantation reveals excellent outcomes in children with hepatoblastoma with an acceptable number of perioperative complications.

21 August 2023 in Journal of Clinical Medicine
Verified
Journal Article
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CÇCandan Çetinkaya-Hosgör
Candan Çetinkaya-Hosgör
PSPhilippa Seika
Philippa Seika
JRJonas Raakow
Jonas Raakow
DKDino Kröll
Dino Kröll
EDEva Dobrindt
Eva Dobrindt
CDChristian Denecke
Christian Denecke
(1) Background: The complexity of the perioperative outcome for patients with gastric cancer is not well reflected by single quality metrics. To study the effect of the surgical outcome on survival, we have evaluated the relationship between textbook outcome (TO)—a new composite parameter—and oncological outcome. (2) Methods: All patients undergoing total gastrectomy or trans-hiatal extended gastrectomy for gastric cancer with curative intent between 2017 and 2021 at our institution were included. TO was defined by negative resection margins (R0); collection of ≥25 lymph nodes; the absence of major perioperative complications (Clavien–Dindo ≥ 3); the absence of any reintervention; absence of unplanned ICU re-admission; length of hospital stay < 21 days; absence of 30-day readmission and 30-day mortality. We evaluated factors affecting TO by multivariate logistic regression. The correlation between TO and long-term survival was assessed using a multivariate cox proportional-hazards model. (3) Results: Of the patients included in this study, 52 (52.5 %) achieved all TO metrics. Open surgery (p = 0.010; OR 3.715, CI 1.334–10.351) and incomplete neoadjuvant chemotherapy (p = 0.020, OR 4.278, CI 1.176–15.553) were associated with failure to achieve TO on multivariate analysis. The achievement of TO significantly affected overall survival (p = 0.015). TO (p = 0.037, OD 0.448, CI 0.211–0.954) and CCI > 4 (p = 0.034, OR 2.844, CI 1.079–7.493) were significant factors affecting DFS upon univariate analysis. In multivariate analysis, CCI > 4 (p = 0.035, OR 2.605, CI 0.983–6.905) was significantly associated with DFS. (4) Conclusions: We identified patient- and procedure-related factors influencing TO. Importantly, achieving TO is strongly associated with improved long-term survival in gastric cancer patients and merits further focus on surgical quality improvement efforts.

16 November 2024 in The Journal of Thoracic and Cardiovascular Surgery
Verified
Journal Article
Open access
PSPhilippa Seika
Philippa Seika
MMMax M. Maurer
Max M. Maurer
AWAxel Winter
Axel Winter
RORamin Raul Ossami-Saidy
Ramin Raul Ossami-Saidy
ASArmanda Serwah
Armanda Serwah
CDChristian Denecke
Christian Denecke
Esophagectomy is central to curative therapy for esophageal cancer (EC). Perioperative outcomes affect both disease-free and overall survival in oncological esophageal surgery. The adoption of robotic techniques may improve surgical outcome. However, the complex nature of perioperative outcomes is not adequately captured by individual quality measures. All patients after minimally invasive esophagectomy (MIE) or robotic-assisted MIE (RAMIE) junction between 2015 and 2022 were included. Textbook outcome was defined as negative resection margins (R0), retrieval of >20 lymph nodes, no major complications, reinterventions, ICU readmission, 30-day readmission or mortality and hospital stay <21 days. Individual propensity scores were calculated using a logistic regression model. Factors affecting TO were evaluated using a logistic regression model while multivariate Cox proportional-hazards model was used to evaluate TO and survival. Of 236 patients included in this study, 106 (44.91%) achieved TO. TO was achieved in 71 cases after MIE (n=71 (41.21%)) and 31 after RAMIE (n=31 (57.41%)(p=0.036). RAMIE was associated with achievement of TO (OR: 2.01; 95% CI: 1.07-3.80; p=0.031) in the overall cohort. Achievement of TO was due to a reduction in major complications in the RAMIE group. Patients with perioperative TO had a higher 3 year disease-free survival (DFS) rate and overall survival rate (UV: HR 2.49, 95% CI: 1.18-5.26, p=0.016; MV: HR 4.30, 95% CI: 1.60-11.55, p=0.004) compared to those without perioperative TO and disease-free survival (UV: HR 2.28, 95% CI: 1.24-4.19, p=0.008; MV: HR 2.82, 95% CI: 1.26-6.32, p=0.011) after 2 year follow up. RAMIE is associated with an increased TO achievement. Achieving TO is associated with enhanced long-term survival in esophageal cancer patients and warrants continued emphasis on surgical quality improvement.

Verified
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PRPaul Ritschl
Paul Ritschl
LWLeke Wiering
Leke Wiering
TDTomasz Dziodzio
Tomasz Dziodzio
MJMaximilian Jara
Maximilian Jara
JKJochen Kruppa
Jochen Kruppa
JPJohann Pratschke
Johann Pratschke
The Model for End-Stage Liver Disease (MELD)-based allocation system was implemented in Germany in 2006 in order to reduce waiting list mortality. The purpose of this study was to evaluate post-transplant results and waiting list mortality since the introduction of MELD-based allocation in our center and in Germany. Adult liver transplantation at the Charité—Universitätsmedizin Berlin was assessed retrospectively between 2005 and 2012. In addition, open access data from Eurotransplant (ET) and the German Organ Transplantation Foundation (DSO) were evaluated. In our department, 861 liver transplantations were performed from 2005 to 2012. The mean MELD score calculated with the laboratory values last transmitted to ET before organ offer (labMELD) at time of transplantation increased to 20.1 from 15.8 (Pearson’s R = 0.121, p < 0.001, confidence interval (CI) = 0.053–0.187). Simultaneously, the number of transplantations per year decreased from 139 in 2005 to 68 in 2012. In order to overcome this organ shortage the relative number of utilized liver donors in Germany has increased (85% versus 75% in non-German ET countries). Concomitantly, 5-year patient survival decreased from 79.9% in 2005 to 60.3% in 2012 (p = 0.048). At the same time, the ratio of waiting list mortality vs. active-listed patients nearly doubled in Germany (Spearman’s rho = 0.903, p < 0.001, CI = 0.634–0.977). In low-donation areas, MELD-based liver allocation may require reconsideration and inclusion of prognostic outcome factors.

25 December 2023 in Cancers
Verified
Journal Article
Open access
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SKSebastian Knitter
Sebastian Knitter
MMMax Maurer
Max Maurer
AWAxel Winter
Axel Winter
EDEva Dobrindt
Eva Dobrindt
PSPhilippa Seika
Philippa Seika
CDChristian Denecke
Christian Denecke
In recent decades, robotic-assisted minimally invasive esophagectomy (RAMIE) has been increasingly adopted for patients with esophageal cancer (EC) or cancer of the gastroesophageal junction (GEJ). However, concerns regarding its costs compared to conventional minimally invasive esophagectomy (MIE) have emerged. This study examined outcomes and costs of RAMIE versus total MIE in 128 patients who underwent Ivor Lewis esophagectomy for EC/GEJ at our department between 2017 and 2021. Surgical costs were higher for RAMIE (EUR 12,370 vs. EUR 10,059, p < 0.001). Yet, median daily (EUR 2023 vs. EUR 1818, p = 0.246) and total costs (EUR 30,510 vs. EUR 29,180, p = 0.460) were comparable. RAMIE showed a lower incidence of postoperative pneumonia (8% vs. 25%, p = 0.029) and a trend towards shorter hospital stays (15 vs. 17 days, p = 0.205), which may have equalized total costs. Factors independently associated with higher costs included readmission to the intensive care unit (hazard ratio [HR] = 7.0), length of stay (HR = 13.5), anastomotic leak (HR = 17.0), and postoperative pneumonia (HR = 5.4). In conclusion, RAMIE does not impose an additional financial burden. This suggests that RAMIE may be considered as a valid alternative approach for esophagectomy. Attention to typical cost factors can enhance postoperative care across surgical methods.

19 November 2022 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
PSPhilippa Seika
Philippa Seika
Matthias BieblMatthias Biebl
Matthias Biebl
JRJonas Raakow
Jonas Raakow
DKDino Kröll
Dino Kröll
CÇCandan Çetinkaya-Hosgör
Candan Çetinkaya-Hosgör
CDChristian Denecke
Christian Denecke
(1) Background: Hand-assisted laparoscopic total gastrectomy (LTG) for patients with gastric cancer (GC) has been established as the standard surgical treatment at our center. This study aims to quantify the learning curve for surgeons performing minimally invasive total gastrectomy at a high-volume single center. (2) Methods: One hundred and eighteen consecutive patients who underwent minimally invasive total gastrectomy between January 2014 and December 2020 at a single high-volume center were included and reviewed retrospectively. Risk-adjusted cumulative sum analysis (RA-CUSUM) was used to monitor the surgical outcomes for patients with different risks of postoperative mortality using varying-coefficient logistic regression models. Patients were ordered by the sequential number of the procedure performed and divided into two groups according to the degree of surgeon proficiency as determined by RA-CUSUM analysis (group A: 45; group B: 73 patients). Age, gender, body mass index (BMI), tumor location, pathology, and comorbidities were compared while primary endpoints comprised surgical parameters, postoperative course, and survival outcomes. (3) Results: Forty-four cases were required for the completion of the learning curve. During this time, the mean operating time decreased. Hand-assisted laparoscopic total gastrectomy performed after a learning curve was associated with a shorter median operating time (OT) (360 min vs. 289 min, <0.001), and a reduced length of stay (A = 18.0 vs. B = 14.0 days) (p = 0.154), while there was a trend toward less major complications (Clavien–Dindo (CD) 3–5 within 90 days (12 (26.67%) vs. 10 (13.70%) p = 0.079). Our results showed no difference in anastomotic leakage between the two groups (group A vs. group B, 3 (6.67%) vs. 4 (5.48%) p = 0.99). Similarly, 30-day (0 (0%) vs. 1 (1.7%), p = 0.365) and 90-day mortality (1 (2.08%) vs. 2 (3.39%), p = 0.684) were comparable. Following multivariate analysis, the level of surgical proficiency was not a significant prognostic factor for overall survival. (4) Conclusions: A minimum of 44 cases are required for experienced laparoscopic surgeons to achieve technical competence for performing LTG. While operation time decreased after completion of the learning curve, quality criteria such as achievement of R0 resection, anastomotic leakage, and perioperative mortality remained unaltered. Of note, the level of surgical training showed no significant impact on the 2 year OS or DFS.