Mario Martín Sánchez

Dr. Mario Martín Sánchez


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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2 April 2025 in Cancers
Verified
Journal Article
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MSMario Martín Sánchez
Mario Martín Sánchez
VDVíctor Domínguez-Prieto
Víctor Domínguez-Prieto
SQSiyuan Qian
Siyuan Qian
HQHernán Dario Quiceno
Hernán Dario Quiceno
MÁMaría Bernarda Álvarez-Alvarez
María Bernarda Álvarez-Alvarez
Pedro VILLAREJO Villarejo-camposPedro VILLAREJO Villarejo-campos
Pedro VILLAREJO Villarejo-campos
Objectives: Inflammatory fibroid polyps, also known as Vanek’s tumors, are rare benign lesions of the gastrointestinal tract. Although the exact cause remains unclear, several theories suggest an association with inflammatory processes and genetic factors. This study aims to present the largest cohort of inflammatory fibroid polyp cases to date, analyzing their clinical presentation, diagnostic methods, and treatment approaches. Materials and methods: A retrospective multicentric analysis was conducted on 67 patients diagnosed with inflammatory fibroid polyps between 2013 and 2023 across four hospitals. Clinical data regarding tumor location, size, symptoms, and treatment were collected. Non-parametric statistical tests, including the chi-square test, Cramér’s V coefficient, and the Mann–Whitney U test, were used to identify association between tumor characteristics, location, and treatment outcomes. Results: The cohort included 67 patients (58.2% female, median age 60 years). The stomach was the most common tumor site (47.8%), followed by the colon (32.8%), and small intestine (10.4%). The majority of patients (73.1%) were asymptomatic, while 9% experienced intestinal obstruction, all of which were located in the small intestine. Endoscopic resection was successful in 77.6% of cases, but surgical intervention was more frequently required for tumors in the small intestine. A significant association was found between larger tumor size, emergency presentation, intestinal location, and the need for surgery. Conclusions: Inflammatory fibroid polyps are commonly managed with endoscopic resection, particularly in gastric and colonic locations. However, small intestinal tumors more often need surgical treatment, especially when presenting with complications like intestinal obstruction.

9 December 2025 in Cancers
Verified
Journal Article
Open access
PDF file
MSMario Martín Sánchez
Mario Martín Sánchez
Pedro VILLAREJO Villarejo-camposPedro VILLAREJO Villarejo-campos
Pedro VILLAREJO Villarejo-campos
VDVíctor Domínguez-Prieto
Víctor Domínguez-Prieto
EREva Ruiz-Hispán
Eva Ruiz-Hispán
BZBegoña López-Botet Zulueta
Begoña López-Botet Zulueta
SQSiyuan Qian
Siyuan Qian
Objectives: Magnetic resonance imaging plays a pivotal role in the management of locally advanced rectal cancer. This study aims to assess the correlation between magnetic resonance tumor regression grade and pathological tumor regression grade following neoadjuvant therapy in patients with locally advanced rectal cancer. Material and Methods: A retrospective analysis was conducted on 97 patients diagnosed with LARC (T3-T4 or any T stage with regional lymph node involvement) who underwent neoadjuvant chemoradiotherapy followed by radical surgery between 2014 and 2020. The correlation between mrTRG and pTRG was evaluated primarily using the weighted Kappa statistic. Additional clinical and imaging data were collected for a comprehensive analysis. Results: The median interval between completion of neoadjuvant therapy and restaging MRI was 40 days, with a median of 69 days from completion of chemoradiotherapy to surgery. The weighted Kappa was 0.27, indicating fair agreement between mrTRG and pTRG. MRI demonstrated a sensitivity of 52.1% and specificity of 81.6% for detecting a good response (pTRG 1–2). For identification of a complete response (pTRG 1), MRI showed a sensitivity of 10% and specificity of 98.7%. Conclusions: The correlation between mrTRG and pTRG shows fair agreement. Although MRI alone may not be sufficient to reliably predict pathological response, its high specificity suggests it can be a useful tool to confirm good and complete responses. Therefore, MRI should be integrated with other diagnostic methods, such as endoscopy and digital rectal examination, especially in organ preservation strategies. Moreover, MRI retains potential as a prognostic factor to guide clinical decision-making in LARC.

5 November 2025 in Biomedicines
Verified
Journal Article
Open access
PDF file
SQSiyuan Qian
Siyuan Qian
DTDiego Romero Triana
Diego Romero Triana
CMCecilia Meliga
Cecilia Meliga
VDVíctor Domínguez-Prieto
Víctor Domínguez-Prieto
BZBegoña López-Botet Zulueta
Begoña López-Botet Zulueta
Pedro VILLAREJO Villarejo-camposPedro VILLAREJO Villarejo-campos
Pedro VILLAREJO Villarejo-campos
Background: Pancreatic metastases from cervical cancer are exceptionally rare, with limited cases described in the literature. Their diagnosis and management remain challenging due to the absence of standardized protocols and the often poor prognosis. Case Presentation: We report the case of a 39-year-old woman with a history of treated stage IIIB cervical squamous cell carcinoma who presented with a solitary mass in the pancreatic tail. Diagnosis was established through cross-sectional imaging, PET-CT, and EUS-guided needle biopsy. The patient underwent systemic chemotherapy and SBRT followed by surgical resection. Histopathological analysis confirmed metastatic squamous cell carcinoma associated with HPV. Despite an initially favorable recovery, peritoneal metastases developed three months later. The patient died seven months after surgery under palliative care after disease progression on immunotherapy. Methods: A systematic review following PRISMA guidelines was conducted across PubMed, Cochrane, and Embase (2000–2025) to identify case reports and series describing pancreatic metastases from cervical cancer. A total of 14 published cases, together with the present case, were analyzed for demographic, clinical, diagnostic, therapeutic, and outcome data. Results: The mean age at diagnosis was 52.5 years (range 36–70). Squamous cell carcinoma was the predominant histology (73%). The pancreatic head was the most common metastatic site (53%). Diagnosis typically relied on abdominal CT, PET-CT, and EUS-guided biopsy. Surgical resection was performed in 28.6% of cases, while systemic therapy—most commonly cisplatin, paclitaxel, and bevacizumab—remained the mainstay for inoperable patients. Conclusions: Pancreatic metastases from cervical cancer usually occur in advanced disease stages and are associated with poor outcomes. Accurate diagnosis requires integration of imaging and histopathology, with PET-CT useful for detecting additional metastases. Surgery may be beneficial in selected patients with isolated lesions, but systemic therapy remains the primary treatment for most. Emerging immunotherapies show promise but are still in early development. Multidisciplinary management and further research are needed to optimize outcomes in this rare presentation.