Nuestros investigadores

Fernando Martínez Regueira

Publicaciones científicas más recientes (desde 2010)

Autores: González de la Huebra, Ignacio Javier, (Autor de correspondencia); Elizalde, Arlette María; García, Alejandra; et al.
Revista: MAGNETIC RESONANCE IMAGING
ISSN 0730-725X  Vol. 57  2019  págs. 317 - 322
Background: The use of preoperative breast MRI remains controversial despite being the most sensitive technique for the detection of breast malignancies. Purpose: To evaluate the benefit of preoperative breast MRI after performing the three conventional techniques (DM, US, DBT). To analyze the influence of breast density in the sensitivity of the different imaging techniques. Material and methods: Retrospective review of 280 histologically confirmed breast cancers in 192 women. We reviewed the medical records and evaluated the change of treatment induced by MRI. Also, we assessed the reports of DM and the combination of the different imaging techniques, and categorized them according to ACR density (a-d) and as negative (BI-RADS 1-3) or positive (BIRADS 4 or 5). The gold standard was the pathologic assessment of the surgical specimen. The sensitivity of the different techniques was compared using McNemar test. Results: Among these 192 women the use of MRI did not significantly increase the mastectomy rate (from 16.6% to 17.6%; p = 0.5). The addition of any technique demonstrated a higher sensitivity than DM alone. The sensitivity of DM alone was 52.5% while using all the techniques, including MRI, was 94.3% (p < 0.001). Regardless of breast density pattern, the addition of any technique significantly increased the sensitivity of DM (p < 0.001). Conclusions: The addition of MRI to the three conventional techniques increased the sensitivity but did not significantly modify the rate of mastectomies. Additional techniques increased the sensitivity of DM in both dense and non-dense breasts.
Autores: Álvarez-Cienfuegos, Francisco Javier; Baixauli, J; et al.
Revista: REVISTA ESPAÑOLA DE ENFERMEDADES DIGESTIVAS
ISSN 1130-0108  Vol. 110  Nº 11  2018  págs. 684 - 690
Purpose: the aim of this study was to compare overall and disease-free survival among patients with colorectal cancer detected via a screening program as compared to those with symptomatic cancer. Material and methods: patients diagnosed via colonoscopy (screening group) and those with clinical symptoms (non-screening) were identified from 1995 to 2014. Demographic, clinical, surgical and pathologic variables were recorded. Stage I, II and III cancers were included. Overall and disease-free survival were calculated at five and ten years after tumor resection and survival was calculated by matching both groups for cancers at stage I, II and III. Results: two hundred and fifty patients were identified as a result of screening procedures and 1,330 patients presented with symptomatic cancers.There were no significant differences in the baseline characteristics between the two groups. Pathologic stage, degree of differentiation, perineural invasion and lymphovascular invasion were lower in the screening group (p < 0.01). Overall and disease-free survival at five and ten years were higher in the screening group (p < 0.01). However, when the subjects were matched for pathologic stage, significant differences were found between the two groups with regard to stage I and III tumors. Disease-free survival in stage III at five years (79.1 vs 61.7%; p < 0.001) and ten years (79.1% vs 58.5%; p < 0.001) were significantly higher in the screening group. Conclusions: patients with stage I and III tumors that were diagnosed via a screening program have a higher overall and disease-free survival at five and ten years.
Autores: Garcia-Velloso, Maria Jose; Rodríguez-Fraile, M; et al.
Revista: EUROPEAN RADIOLOGY
ISSN 0938-7994  Vol. 27  Nº 8  2017  págs. 3190-3198
Our aim was to evaluate the diagnostic accuracy of magnetic resonance imaging (MRI) fused with prone 2-[fluorine-18]-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography (PET) in primary tumour staging of patients with breast cancer. METHODS: This retrospective study evaluated 45 women with 49 pathologically proven breast carcinomas. MRI and prone PET-CT scans with time-of-flight and point-spread-function reconstruction were performed with the same dedicated breast coil. The studies were assessed by a radiologist and a nuclear medicine physician, and evaluation of fused images was made by consensus. The final diagnosis was based on pathology (90 lesions) or follow-up¿¿¿24 months (17 lesions). RESULTS: The study assessed 72 malignant and 35 benign lesions with a median size of 1.8 cm (range 0.3-8.4 cm): 31 focal, nine multifocal and nine multicentric cases. In lesion-by-lesion analysis, sensitivity, specificity, positive and negative predictive values were 97%, 80%, 91% and 93% for MRI, 96%, 71%, 87%, and 89% for prone PET, and 97%. 94%, 97% and 94% for MRI fused with PET. Areas under the curve (AUC) were 0.953, 0.850, and 0.983, respectively (p¿<¿0.01). CONCLUSIONS: MRI fused with FDG-PET is more accurate than FDG-PET in primary tumour staging of breast cancer patients and increases the specificity of MRI.
Autores: Cambeiro, Felix Mauricio; Martínez, Fernando; Rodríguez-Spiteri, Natalia; et al.
Revista: BRACHYTHERAPY
ISSN 1538-4721  Vol. 15  Nº 4  2016  págs. 485 - 494
Purpose: To assess the safety, feasibility, and efficacy of free-hand intraoperative multicatheter breast implant (FHIOMBI) and perioperative high-dose-rate brachytherapy (PHDRBT) in early breast cancer. Methods and Materials: Patients with early breast cancer candidates for breast conservative surgery (BCS) were prospectively enrolled. Patients suitable for accelerated partial breast irradiation (APBI) (low or intermediate risk according GEC-ESTRO criteria) received PHDRBT (3.4 Gy BID × 10 in 5 days). Patients not suitable for APBI (high risk patients according GEC-ESTRO criteria) received PHDRBT boost (3.4 Gy BID × 4 in 2 days) followed by whole breast irradiation. Results: From June 2007 to November 2014, 119 patients were treated and 122 FHIOMBI procedures were performed. Median duration of FHIOMBI was 25 minutes. A median of eight catheters (range, 4-14) were used. No severe intraoperative complications were observed. Severe early postoperative complications (bleeding) were documented in 2 patients (1.6%), wound healing complications in 3 (2.4%), and infection (mastitis or abscess) in 2 (1.6%). PHDRBT was delivered as APBI in 88 cases (72.1%) and as a boost in 34 (27.8%). The median clinical target volume T was 40.8 cc (range, 12.3-160.5); median D90 was 3.32 Gy (range, 3.11-3.85); median dose homogeneity index was 0.72 (range, 0.48-0.82). With a median followup of 38.4 months (range, 8.7-98.7) no local, elsewhere, or regional relapses were observed; there was only one distant failure in PHDRBT boost. No major (acute or late) RTOG grade 3 or higher were documented in any of the 119 patients treated with PHDRBT. Cosmetic outcome in APBI patients was excellent or good in (87.0%) and fair or poor in (11.9%) while in boost patients was excellent or good in (76.4%) and fair in (23.5%). Conclusion: The FHIOMBI-PHDRBT program does not add complications to conservative surgery. It allows precise selection of APBI patients and offers excellent results in disease control and cosmetics. It also offers logistic advantages because it dramatically shortens the time of local treatment and avoids further invasive procedures.
Autores: Sola, Jesús Javier; Diaz-Gonzalez, JA; et al.
Revista: BRITISH JOURNAL OF CANCER
ISSN 0007-0920  Vol. 115  Nº 6  2016  págs. 655-663
Preoperative chemoradiation increases the likelihood of achieving favourable histopathological features that correlate with a 5-year OS>70% in GC patients.
Autores: Álvarez-Cienfuegos, Francisco Javier; Rotellar, Fernando; Baixauli, J; et al.
Revista: REVISTA ESPAÑOLA DE ENFERMEDADES DIGESTIVAS
ISSN 1130-0108  Vol. 106  Nº 3  2014  págs. 171-194
Liver regeneration (LR) is one of the most amazing tissue injury response. Given its therapeutic significance has been deeply studied in the last decades.LR is an extraordinary complex process, strictly regulated, which accomplishes the characteristics of the most evolutionary biologic systems (robustness) and explains the difficulties of reshaping it with therapeutic goals.TH reproduces the physiological tissue damage response pattern, with a first phase of priming of the hepatocytes-cell-cycle transition G0-G1¿, and a second phase of proliferation ¿cell-cycleS/M phases¿ which ends with the liver mass recovering. This process has been related with the tissue injury response regulators as: complement system, platelets, inflammatory cytokines(TNF-a, IL-1b, IL-6), growth factors (HGF, EGF, VGF) and anti-inflammatory factors (IL-10, TGF-b).Given its complexity and strict regulation, illustrates the unique alternative to liver failure is liver transplantation.The recent induced pluripotential cells (iPS) description and the mesenchymal stem cell (CD133+) plastic capability have aroused new prospects in the cellular therapy field. Those works have assured the cooperation between mesenchymal and epithelial cells. Herein, we review the physiologic mechanisms of liver regeneratio
Autores: Álvarez-Cienfuegos, Francisco Javier; Martínez, Fernando; Baixauli, J; et al.
Revista: ANALES DE PEDIATRIA
ISSN 1695-4033  Vol. 80  Nº 5  2014  págs. 339
Con la experiencia de grupos como el de Pareja et al. y las contribuciones recientes de la plasticidad de las iPSC, se abre una nueva era en la terapia celular en el tratamiento de los errores congénitos del metabolismo.
Autores: Rodríguez-Spiteri, Natalia; Torre, Wenceslao; et al.
Revista: ANALES DEL SISTEMA SANITARIO DE NAVARRA
ISSN 1137-6627  Vol. 36  Nº 1  2013  págs. 141 - 144
Background. Curettage mastectomy is indicated as a palliative treatment in locally advanced breast cancer. We present our experience with the use of a DIEP flap reconstruction following extensive mastectomy. Methods. We report the case of a patient with very advanced local breast cancer that was subsidiary to aggressive palliative surgery after chemotherapy. Results. It was considered that the closure that could be performed with the latissimus dorsi muscle was unsuitable, therefore a DIEP flap was performed. The patient was discharged uneventfully. Conclusion. The DIEP reconstruction offers great cutaneous extension. It can be a resource in highly selected cases of locally advanced breast cancer in which surgery becomes the main treatment.
Autores: Rodríguez-Spiteri, Natalia; Martínez, Fernando; Olartecoechea, Begoña; et al.
Revista: CIRUGIA ESPAÑOLA
ISSN 0009-739X  Vol. 91  Nº 8  2013  págs. 490 - 495
Introduction: Accelerated partial breast irradiation (APBI) with multicatheters after lumpectomy for breast cancer (BC) may be an alternative to whole breast irradiation in selected patients. The aim is to show our 5 year experience. Method: Between June 2007 and June 2012, 87 BC patients have been evaluated for APBI. Inclusion criteria were: age over 40 years, unifocal tumour, infiltrating ductal or intraductal carcinoma, tumour size smaller than 3 cm and no lymph node involvement. Complications, cosmetic results and local and distant recurrences were evaluated. Results: Treatment was completed in 48 patients and contraindicated in 39. The average age of treated patients was 59 years. Operating time was 123. min with 9 implanted catheters in each patient. No complications were observed during surgery or radiotherapy. Patients were discharged from hospital after 4 days. Tumour size was 11. mm. Of these, 35 were infiltrating ductal and 13 intraductal carcinomas. A total of 44 patients received adjuvant treatment. Mean follow-up was 22 months with no evidence of local or distant recurrence. The cosmetic outcome was good or excellent in 66% of cases. Conclusions: APBI with multicatheter placed after lumpectomy for BC is feasible and safe but requires a strict selection of patients.
Autores: Álvarez-Cienfuegos, Francisco Javier; Valentí, Víctor; Muñoz, Miguel Ángel; et al.
Revista: ENDOSCOPY
ISSN 0013-726X  Vol. 44  Nº Suppl. 2  2012  págs. UCTN:E366-7
Autores:  et al.
Revista: RADIOLOGIA
ISSN 0033-8338  Vol. 54  Nº 4  2012  págs. 350 - 356
Objective: To compare two series of patients with breast cancer, one staged using preoperative MRI and the other staged using conventional techniques, analyzing the changes to treatment, the number of mastectomies, and the number of reinterventions due to involvement of the margins. Material and methods: We reviewed 600 patients divided into 300 patients with preoperative MRI (series 1) and 300 without preoperative MRI (series 2). We recorded the following variables: age, menopausal status, tumor size on pathological examination, multiplicity and bilaterality, surgical treatment and type of treatment, the administration of neoadjuvant chemotherapy, and reintervention for involved margins. We used Student's t-test and the chi-square test to compare the variables between the two series. Results: The mean age of patients in the two series was similar (51.5 and 51.8 years, P=0.71). The mean size of the tumor was smaller in series 1 (16.9 mm vs 22.3 mm) (P<.001). More multiple tumors were detected in series 1 (28.7 vs 15.7%) (P<.001). The rate of mastectomies was lower in series 1 (25 vs 48%) (P<.001). Oncoplastic and bilateral surgeries were performed only in series 1. Neoadjuvant chemotherapy was administered more often in series 1 (30.7 vs 9.3%) (P<.001). The difference in the number of reinterventions for involved margins did not reach significance (7.2% in series 1 vs 3.2% in series 2) (P=.095). Conclusion: When MRI was used for staging, neoadjuvant chemotherapy and oncoplastic surgery were used more often and the mastectomy rate decreased. Despite the increase in conservative surgery in patients staged with MRI, the number of reinterventions for involved margins did not increase, although there was a trend towards significance
Autores: Álvarez-Cienfuegos, Francisco Javier; Valentí, Víctor; Muñoz, Miguel Ángel; et al.
Revista: ENDOSCOPY
ISSN 0013-726X  Vol. 44  Nº Supl. 2  2012  págs. E366 - E367
Autores: Diaz-Gonzalez, JA; Rodríguez, Javier; Hernández, José Luis; et al.
Revista: INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS
ISSN 0360-3016  Vol. 80  Nº 3  2011  págs. 698-704
PURPOSE: To analyze the rate of pathologic response in patients with locally advanced gastric cancer treated with preoperative chemotherapy with and without chemoradiation at our institution. METHODS AND MATERIALS: From 2000 to 2007 patients were retrospectively identified who received preoperative treatment for gastric cancer (cT3-4/ N+) with induction chemotherapy (Ch) or with Ch followed by concurrent chemoradiotherapy (45 Gy in 5 weeks) (ChRT). Surgery was planned 4-6 weeks after the completion of neoadjuvant treatment. Pathologic assessment was used to investigate the patterns of pathologic response after neoadjuvant treatment. RESULTS: Sixty-one patients were analyzed. Of 61 patients, 58 (95%) underwent surgery. The R0 resection rate was 87%. Pathologic complete response was achieved in 12% of the patients. A major pathologic response (<10% of residual tumor) was observed in 53% of patients, and T downstaging was observed in 75%. Median follow-up was 38.7 months. Median disease-free survival (DFS) was 36.5 months. The only patient-, tumor-, and treatment-related factor associated with pathologic response was the use of preoperative ChRT. Patients achieving major pathologic response had a 3-year actuarial DFS rate of 63%. CONCLUSIONS: The patterns of pathologic response after preoperative ChRT suggest encouraging intervals of DFS. Such a strategy may be of interest to be explored in gastric cancer.
Autores: Valentí, Víctor; Hernández, José Luis; Beorlegui Murillo, Patricia; et al.
Revista: JOURNAL OF SURGICAL ONCOLOGY
ISSN 0022-4790  Vol. 104  Nº 2  2011  págs. 124-129
Background: Significant tumor downstaging has been achieved in patients with localized gastric adenocarcinoma by preoperative chemoradiotherapy (ChRT) or induction chemotherapy (Ch). However the influence of ChRT and Ch on postoperative outcomes has not yet been clarified, with very few studies examining this issue. We retrospectively analyzed the efficacy in terms of pathological response and early postoperative complications of two protocols of preoperative ChRT and Ch for locally advanced gastric cancer. Methods: Between 2000 and 2008, 72 patients with operable locally advanced gastric cancer (cT3-4/N+) were treated with preoperative treatment: 1-patients receiving induction Ch or 2-neoadjuvant Ch followed by concurrent ChRT. Postoperative histopathological regression and surgical complications were investigated including variables related to patients, surgical variables, preoperative treatment, and tumor. Results: There were no differences in the incidence of complications between the ChRT and Ch groups (30.9% vs. 33.3%). The most frequent complications were nonspecific surgical complications (pneumonia [12.5%] and infection from intravenous catheters [9.7%]). Risk factors for complications were high-body mass index (BMI > 25 kg/m(2)) and extension of surgery to the pancreas and spleen. A major pathological response was observed in 33.3% of patients, being more frequent in the ChRT group (47.6% vs. 13.3%; chi(2), P = 0.0024).
Autores: Valentí, Víctor; Hernández, José Luis; Martínez, Fernando; et al.
Revista: CLINICAL AND TRANSLATIONAL ONCOLOGY
ISSN 1699-048X  Vol. 13  Nº 12  2011  págs. 899-903
OBJECTIVES Analysis of the results on the treatment of esophageal cancer by transthoracic esophagectomy by a multidisciplinary team of surgeons and oncologists. METHODS Between January 1990 and December 2009, 100 consecutive patients underwent transthoracic esophagectomy. Data were collected prospectively and clinical, pathological and histological features of the tumors were analyzed as well as the results of postoperative morbidity and mortality. RESULTS The average patient age was 55 years (range 31- 83 years). In 59 cases the tumor was located in the lower third and in 41 cases in the middle third. Forty-six patients had adenocarcinoma and 54 squamous cell carcinoma. In 54 cases radio-chemotherapy was planned preoperatively. Classifi cation according to pathological tumor stage was: stage 0 in 21 patients, stage I in 10 patients, stage IIa in 28, stage IIb in 9, stage III in 21 and stage IV in 11. The mean number of lymph nodes examined was 14 (range 0-28). Hospital mortality occurred in 4 cases and postoperative complications in 29 patients (33%). The most frequent postoperative complication was pulmonary complications in 17 cases. The average hospital stay was 15.2 days (range 10-40 days) CONCLUSIONS The results of esophageal cancer have been improved in recent years due to the formation of multidisciplinary teams in this pathology. In our study we have shown that the results obtained with the transthoracic technique for cancer of the esophagus are within the ranges rep
Autores: Aramendía, José Manuel; Espinos, Jaime; et al.
Revista: CANCER CHEMOTHERAPY AND PHARMACOLOGY
ISSN 0344-5704  Vol. 65  Nº 3  2010  págs. 457 - 465
Purpose Capecitabine is effective against metastatic breast cancer (MBC). We hypothesized that sequential treatment with dose-dense epirubicin/cyclophosphamide (EC) and docetaxel/capecitabine would be active and tolerable in the adjuvant/neoadjuvant setting. Methods In this prospective phase II clinical trial patients with HER2-negative and node-positive or locally advanced tumors were eligible to receive four cycles of EC (100/600 mg/m2) every 2 weeks with G-CSF on days 3¿10, followed by four cycles of docetaxel/capecitabine (75/1,000 mg/m2 b.i.d., days 1¿14) every 3 weeks. Results Fifty-five patients were enrolled with median age of 49, and 80% had hormone receptor-positive disease. The median tumor size was 2.5 cm, with a median of two axillary nodes involved. Seventy-five percent of the first 20 patients had grade 2/3 hand-foot syndrome (HFS). Dose reduction of capecitabine to 800 mg/m2 reduced the grade 2/3 HFS incidence to 31% in the remaining patients. No grade 4/5 toxicities were observed. All 20 patients treated preoperatively responded, with 5 (25%) pathologic complete responses and 3 additional pT0N1 tumors. At a median follow-up of 48 (range 28¿60) months, the event-free and overall survival rates are 91 and 98%, respectively. Conclusions Sequential treatment with dose-dense EC followed by docetaxel/capecitabine, using a lower capecitabine dose than that approved for MBC, has an acceptable toxicity profile and encouraging activity when used as neoadjuvant or adjuvant treatment of breast cancer.
Autores: Martínez, Fernando; et al.
Revista: Revista española de enfermedades digestivas
ISSN 1130-0108  Vol. 102  Nº 5  2010  págs. 338 -339
Autores: Garcia-Velloso, Maria Jose; et al.
Revista: JOURNAL OF NUCLEAR MEDICINE
ISSN 0161-5505  Vol. 51  Nº Supl. 2  2010  págs. 1197
Objectives Sentinel node biopsy (SNB) has become a standard treatment in staging axillary lymph nodes in early breast cancer. However, SNB is an invasive procedure. Breast cancer is frequently characterised by increased 18FDG uptake and many studies have shown encouraging results in detecting axillary lymph node metastases. The aim of this study was to compare SNB and positron emission tomography/computed tomography (PET/CT) imaging, to assess their values in detecting occult axillary metastases. Methods Forty-nine women (mean age 55-year old) with 50 breast cancer (mean primary tumor size 1.97 cm) and clinically negative axilla were enrolled in the study. 18FDG PET was carried out before surgery, using a PET/CT scanner. In all patients, SNB was carried out after identification through lymphoscintigraphy. Patients underwent axillary lymph nodes dissection (ALND) in cases of positive SNB. The results of PET scan were compared with histopathology of SNB and ALND. Results In all, 23 out of the 49 patients (47%) had metastases in axillary nodes. The standardized uptake value (SUV) was related to the histological grading (2.6±1.1 in well differentiated vs 3.7±3.1 in poorly differentiated). Sensitivity of FDG-PET scan for detection of axillary lymph node metastases in this series was very low (13%) due to 7 false negative in micrometastases and 6 false negative in immunohistochemistry metastases. Positive predictive value was 75% due to a false positive diagnosis. However, specificity was acceptable (96%). Conclusions The high specificity of PET/CT imaging indicates that patients who have a PET-positive axilla should have an ALND rather than an SNB for axillary staging. In contrast, FDG-PET showed poor sensitivity in the detection of axillary metastases, confirming the need for SNB in cases where PET is negative in the axilla
Autores: Martínez, Fernando; Rodríguez-Spiteri, Natalia;
Libro:  Senología: la mama normal y su patología
2010  págs. 577-591
Autores: Rodríguez-Spiteri, Natalia; Martínez, Fernando;
Libro:  Senología. La mama normal y su patología
2010  págs. 21-25
Autores: Martínez, Fernando; Rodríguez-Spiteri, Natalia;
Libro:  Senología: la mama normal y su patología
2010  págs. 395-406
Autores: Rodríguez-Spiteri, Natalia; Martínez, Fernando;
Libro:  Senología: la mama normal y su patología
2010  págs. 597-601
Autores: Martínez, Fernando; Rodríguez-Spiteri, Natalia;
Libro:  Senología: la mama normal y su patología
2010  págs. 504-524
Autores: Martínez, Fernando; Rodríguez-Spiteri, Natalia;
Libro:  Senología: la mama normal y su patología
2010  págs. 377-393
Autores: Martínez, Fernando; Rodríguez-Spiteri, Natalia;
Libro:  Senología: la mama normal y su patología
2010  págs. 147-154
Autores: Martínez, Fernando; Rodríguez-Spiteri, Natalia;
Libro:  Senología: la mama normal y su patología
2010  págs. 119-125