[Low-grade astrocytoma within a retroperitoneal teratoma: Case report].

Teratomas are neoplasms originate from germ cells and can undergo malignant transformation, the World Health Organization (WHO) classified them as teratoma with somatic-type malignancy which is uncommon and sarcomas are the histological type with the highest incidence. It is important to identify this type of tumors because influences the prognosis and survival of the patient. We present the case of a 5-month-old male, who began his condition at one month-old with constipation and increase of the abdominal circumference, imaging studies revealed an abdominal lesion, he was treated with chemotherapy and surgery.

Breast Cancer Tissue Explants: An Approach to Develop Personalized Therapy in Public Health Services.

Breast cancer is one of the main causes of death worldwide. Lately, there is great interest in developing methods that assess individual sensitivity and/or resistance of tumors to antineoplastics to provide personalized therapy for patients. In this study we used organotypic culture of human breast tumor slices to predict the experimental effect of antineoplastics on the viability of tumoral tissue.

p16 and pRb expression in laryngeal squamous cell carcinoma with and without infection by EBV or different genotypes of HPV: a retrospective study.

Background: Laryngeal squamous cell carcinoma (LSCC) represents one of the principal tumors of the head and neck. Human papillomavirus (HPV) and Epstein-Barr virus (EBV) are considered risk factors for the development and the clinical prognosis of LSCC. High levels of p16 are suggested as a surrogate marker of HPV or EBV infection in some head and neck tumors but in LSCC is still controversial.

Factores asociados a sobrevida a un año en pacientes postoperados de glioblastoma.

Objective: To identify factors associated with one-year survival in postoperative glioblastoma patients at a hospital in northeastern Mexico.

Material And Methods: Nested case-control study. Patients operated on for glioblastoma between 2016-2019 were included.

Post-traumatic Stress Symptoms, Distress, and Optimism in Mexican Colorectal Cancer Patients.

Background: The diagnosis and treatment of colorectal cancer are considered highly stressful and potentially traumatic events that can generate post-traumatic stress symptoms and distress among patients.

Objective: This study assessed levels of post-traumatic stress symptoms, distress, and optimism, as well as differences between these conditions relative to sociodemographic and medical variables, in Mexican patients with colorectal cancer.

Design: A cross-sectional descriptive study design was employed, in which 192 colorectal cancer patients over the age of 18 years participated.

Common bile duct diameter by age groups in adult patients without bile duct pathology.

Objective: To determine the average value of the diameter of the common bile duct by age group in adult patients without bile duct pathology.

Method: A cross-sectional, observational, descriptive and prospective study in adults without bile duct pathology who underwent abdominal ultrasound. The internal diameter of the common bile duct was measured after questioning.

[Perception of the staff in training on patient's safety during the COVID-19 pandemic].

Background: The recent pandemic has presented several challenges in relation to patient safety with the increase of cognitive, depressive and anxiety symptoms in health workers due to the fear of being infected from COVID-19.

Objective: To determine the relationship between anxiety, depression and fear of COVID-19, with the perception of the patient safety environment in medical residents.

Material And Methods: Observational, cross-sectional, prospective and analytical study.

Genomic analysis of virulence factors and antimicrobial resistance of group B Streptococcus isolated from pregnant women in northeastern Mexico.

Introduction: Group B Streptococcus (GBS) causes infections in women during pregnancy and puerperium and invasive infections in newborns. The genes lmb, cylE, scpB, and hvgA are involved with increased virulence of GBS, and hypervirulent clones have been identified in different regions. In addition, increasing resistance of GBS to macrolides and lincosamides has been reported, so knowing the patterns of antibiotic resistance may be necessary to prevent and treat GBS infections.

Cervicovaginal and rectal colonization by group B Streptococci in Mexican women with full-term pregnancies.

Background: A pregnant woman rectally or vaginally colonized by group B Streptococcus can infect her newborn.

Patients And Methods: Prospective, cross-sectional, analytical 24-month study in pregnant women. Women in labor with ≥ 36 weeks of gestation were included.

Association between genetic variations at 8q24 and prostate cancer risk in Mexican Men.

Background: Variants of 8q24 locus have been associated with prostate cancer (PCa) susceptibility. This study aims to analyze the genetic basis of PCa susceptibility in Mexican men by analyzing SNPs in the 8q24 locus for the first time.

Methods: A case-control study was performed in 875 men recruited from the Mexican Social Security Institute, 326 patients with PCa, and 549 non-PCa patients (88 with benign prostatic hyperplasia BPH and 461 healthy controls).

[Osteoclast-Like giant cell bladder carcinoma: Case report].

Background: Osteoclast-like giant cell bladder carcinomas are an extremely unusual and aggressive histological subtype of urothelial carcinomas. Only 30 cases are reported in the international literature.

Clinical Case: A 79-year-old male patient attended our Urology department for a six-month history of macroscopic hematuria.

Orbit and sinonasal metastasis as presenting sign of renal cell carcinoma.

Orbit and sinonasal metastases are rare. Renal cell carcinoma (RCC) can metastasise to this region. We present the case of a 49-year-old woman with weight loss, diplopia and a rapidly growing facial mass.

Zika and dengue but not chikungunya are associated with Guillain-Barré syndrome in Mexico: A case-control study.

Background Zika, dengue and chikungunya viruses (ZIKV, CHIKV and DENV) are temporally associated with neurological diseases, such as Guillain-Barré syndrome (GBS). Because these three arboviruses coexist in Mexico, the frequency and severity of GBS could theoretically increase. This study aims to determine the association between these arboviruses and GBS in a Mexican population and to establish the clinical characteristics of the patients, including the severity of the infection.

[Dispositivo de protección durante procedimientos generadores de aerosoles. A propósito de la pandemia de COVID-19].

Al editor: En diciembre de 2019, la ciudad de Wuhan, China, se convirtió en el centro de una epidemia de neumonía de causa desconocida con implicaciones globales, pero no fue hasta enero de 2020 que los científicos chinos identificaron a un nuevo coronavirus (SARS-CoV-2) como el causante, y debido a su elevada contagiosidad la enfermedad se convirtió en pandemia.

Demographic and clinical characterization of multiple sclerosis in Mexico: The REMEMBer study.

Background: Multiple sclerosis (MS) is a chronic neurodegenerative disease of the central nervous system with high prevalence in young adults around the world. The vast majority of epidemiological studies and statistics are based on European and American data, so most clinical guidelines and medical consensus are based on this information. There is very limited evidence in Mexico regarding demographic and clinical aspects of MS.

ADIPOQ single nucleotide polymorphisms and breast cancer in northeastern Mexican women.

Background: Adiponectin gene (ADIPOQ) polymorphisms have been shown to affect adiponectin serum concentration and some have been associated with breast cancer (BC) risk. The aims of this study were to describe the frequency of single nucleotide polymorphisms (SNPs) of ADIPOQ in Mexican women with BC and to determine if they show an association with it.

Methods: DNA samples from 397 patients and 355 controls were tested for the ADIPOQ gene SNPs: rs2241766 (GT) and rs1501299 (GT) by TaqMan allelic discrimination assay.

Quality of life in Mexican colorectal cancer patients: analysis with sociodemographic, medical, and psychological variables.

In this study, we evaluated the influence of sex, age, clinical stage, and colostomy/ileostomy variables on the quality of life of Mexican patients with colorectal cancer. Using a descriptive cross-sectional design, 192 colorectal cancer patients were included in the study. Significant differences were observed in emotional functioning between patients with rectal cancer and those with colon cancer.

Pelvic radiation therapy with volumetric modulated arc therapy and intensity-modulated radiotherapy after renal transplant: A report of 3 cases.

Aim: Describe characteristics and outcomes of three patients treated with pelvic radiation therapy after kidney transplant.

Background: The incidence of pelvic cancers in kidney transplant (KT) recipients is rising. Currently it is the leading cause of death.

Zika Virus infection and Guillain-Barré syndrome in Northeastern Mexico: A case-control study.

Background: Beginning August 2017, we conducted a prospective case-control investigation in Monterrey, Mexico to assess the association between Zika virus (ZIKV) and Guillain-Barré syndrome (GBS).

Methods: For each of 50 GBS case-patients, we enrolled 2-3 afebrile controls (141 controls in total) matched by sex, age group, and presentation to same hospital within 7 days.

Results: PCR results for ZIKV in blood and/or urine were available on all subjects; serum ZIKV IgM antibody for 52% of case-patients and 80% of controls.

Cognitive Behavioral Stress Management intervention in Mexican colorectal cancer patients: Pilot study.

Objective: Determine the feasibility and the preliminary effects of brief cognitive behavioral stress management (CBSM) intervention, compared with psychoeducation (PE) group in posttraumatic stress, distress, optimism, and quality of life in patients with colorectal cancer.

Methods: Ninety-four patients were randomized: 40 in CBSM intervention and 54 in PE. They answered psychological questionnaires before and after the intervention and 3 months later for follow-up.

[Prevalencia y genotipos del virus del papiloma humano en muestras de tejido laríngeo de pacientes con cáncer de laringe del noreste de México].

Antecedentes: El cáncer de laringe representa el 21.7% de las neoplasias malignas de vías aerodigestivas superiores. La prevalencia del virus del papiloma humano (VPH) en el cáncer de laringe oscila entre el 0 y el 80%.