Sara Pedraza

Dr. Sara Pedraza

orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

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

Representative Publications

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24 January 2022 in Strahlentherapie und Onkologie
Verified
Journal Article
Open access
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SPSara Pedraza
Sara Pedraza
ASAlexander P. Seiffert
Alexander P. Seiffert
PSPilar Sarandeses
Pilar Sarandeses
BMBeatriz Muñoz-Lopez
Beatriz Muñoz-Lopez
EAEnrique J. Gómez Aguilera
Enrique J. Gómez Aguilera
JPJosé F. Pérez-Regadera
José F. Pérez-Regadera
Objective: The aim of the study was to assess the impact of clinical and metabolic parameters derived from 18F-FDG PET/CT (positron emission tomography–computed tomography) in patients with locally advanced cervical cancer (LACC) on prognosis. Methods: Patients with LACC of stage IB2-IVA treated by primary radiochemotherapy followed by brachytherapy were enrolled in this retrospective study. Indexes derived from standardized uptake value (SUV), metabolic tumor volume (MTV), total lesion glycolysis (TLG), and textural features of the primary tumor were measured for each patient. Overall survival (OS) and recurrence-free survival (RFS) rates were calculated according to Kaplan–Meier and survival curves were compared using the log-rank test. Uni- and multivariate analyses were performed using the Cox regression model. Results: A total of 116 patients were included. Median follow-up was 58 months (range: 1–129). A total of 36 (31%) patients died. Five-year OS and RFS rates were 69 and 60%, respectively. Univariate analyses indicated that FIGO stage, the presence of hydronephrosis, high CYFRA 21.1 levels, and textural features had a significant impact on OS and RFS. MTV as well as SCC-Ag concentration were also significantly associated with OS. On multivariate analysis, the presence of hydronephrosis, CYFRA 21.1, and sphericity were independent prognostics factors for OS and RFS. Also, SCC-Ag level, MTV, and GLZLM (gray-level zone length matrix) ZLNU (zone length non-uniformity) were significantly associated with OS. Conclusion: Classical prognostic factors and tumor heterogeneity on pretreatment PET/CT were significantly associated with prognosis in patients with LACC.

1 May 2019 in Revista Española de Medicina Nuclear e Imagen Molecular
Verified
Journal Article
Closed access
SPSara Pedraza
Sara Pedraza
ARA. Ruiz-Alonso
A. Ruiz-Alonso
AHA.C. Hernández-Martínez
A.C. Hernández-Martínez
ECE. Cabello
E. Cabello
DLD. Lora
D. Lora
JPJ.F. Pérez-Regadera
J.F. Pérez-Regadera

17 November 2018 in Revista Española de Medicina Nuclear e Imagen Molecular (English Edition)
Verified
Journal Article
Closed access
SPSara Pedraza
Sara Pedraza
ARAna Ruiz-Alonso
Ana Ruiz-Alonso
AHAna Cristina Hernández-Martínez
Ana Cristina Hernández-Martínez
ECEduardo Cabello
Eduardo Cabello
DLDavid Lora
David Lora
JPJosé Fermín Pérez-Regadera
José Fermín Pérez-Regadera

30 October 2023 in Exploration of Targeted Anti-tumor Therapy
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Journal Article
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AOAbrahams Ocanto
Abrahams Ocanto
Xabier Mielgo-RubioXabier Mielgo-Rubio
Xabier Mielgo-Rubio
JTJavier Luna Tirado
Javier Luna Tirado
NMNuria Linares Mesa
Nuria Linares Mesa
MVMarta López Valcárcel
Marta López Valcárcel
FCFelipe Counago
Felipe Counago
Oncology patients are more susceptible to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection due to hospital contact and an immunological system that can be compromised by antineoplastic therapy and supportive treatments. Certain similarities have been described in the physiopathology of coronavirus disease 2019 (COVID-19) and lung cancer (LC) that may explain the higher probability of these patients of developing a more serious disease with more frequent hospitalizations and even death, especially with the addition of smoking, cardiovascular and respiratory comorbidities, old age and corticosteroids use. Pre-existing lesions and cancer therapies change the normal architecture of the lungs, so diagnostic scales such as COVID-19 Reporting and Data System (CO-RADS) are of vital importance for a correct diagnosis and patient homogenization, with a high inter-observer correlation. Moreover, anticancer treatments have required an adaptation to reduce the number of visits to the hospital [hypofractionated radiotherapy (RT), larger intervals between chemotherapy cycles, delay in follow-up tests, among others]. In a way, this has also caused a delay in the diagnosis of new cancers. On the other hand, vaccination has had a positive impact on the mortality of these patients, who maintain a similar seroprevalence to the rest of the population, with a similar impact in mortality.

1 October 2017 in International Journal of Radiation Oncology, Biology, Physics
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Journal Article
Closed access
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HPH. Perez-Montero
H. Perez-Montero
ABA. Campos Bonel
A. Campos Bonel
MFM. Fasano
M. Fasano
SPSara Pedraza
Sara Pedraza
SGS. Guardado
S. Guardado
MCM.A. Cabeza
M.A. Cabeza

1 April 2015 in Radiotherapy and Oncology
Verified
Journal Article
Open access
AMA.C. Hernandez Martinez
A.C. Hernandez Martinez
SPSara Pedraza
Sara Pedraza
PSP. Sarandeses
P. Sarandeses
AGA. Gomez
A. Gomez
ECE. Caballero
E. Caballero
ARA. Ruiz
A. Ruiz