18 documents found, page 1 of 2

Investigação Clínica da Iniciativa do Investigador em Portugal: Identificação d...

Challenges in Cytology Specimens With Hürthle Cells

In fine-needle aspirations (FNA) of thyroid, Hürthle cells can be found in a broad spectrum of lesions, ranging from non-neoplastic conditions to aggressive malignant tumors. Recognize them morphologically, frequently represents a challenging for an adequately diagnosis and are associated with a significant interobserver variability. Although the limitations of the morphologic diagnosis still exist, the interpr...

Risk Factors for Breast Cancer, Overall and by Tumor Subtype, among Women from ...

Background: Breast cancer incidence is rising in Africa, but there are scare data regarding risk factors in this region. We assessed the relation between risk factors and the occurrence of breast cancer, overall and by tumor subtype in women from Mozambique. Methods: The associations between education, number of births, height, weight, body mass index (BMI), and breast cancer risk among 138 cases (participants ...

Survival Impact and Cost-Effectiveness of a Multidisciplinary Tumor Board for B...

Background Despite the international endorsement of multidisciplinary tumor boards (MTBs) for breast cancer care, implementation is suboptimal worldwide, and evidence regarding their effectiveness in developing countries is lacking. We assessed the impact on survival and the cost-effectiveness of implementing an MTB in Mozambique, sub-Saharan Africa. Materials and Methods This prospective cohort study included ...

Relationship between PD-L1 expression and tumor-infiltrating lymphocytes in can...

Background: Studies pointed out that the tumor-infiltrating lymphocytes (TILs) have considerable importance in canine mammary tumor (CMT). On the other hand, cancer cells sometimes find ways to use immune checkpoint proteins as a shield to avoid being identified and attacked by the immune system as programmed death 1 ligand 1 (PD-L1). In this study, it was investigated the relationship between PD-L1 expression,...

Disruption of ph dynamics suppresses proliferation and potentiates doxorubicin ...

The reverse pH gradient is a major feature associated with cancer cell reprogrammed metabolism. This phenotype is supported by increased activity of pH regulators like ATPases, carbonic anhydrases (CAs), monocarboxylate transporters (MCTs) and sodium–proton exchangers (NHEs) that induce an acidic tumor microenvironment, responsible for the cancer acid-resistant phenotype. In this work, we analyzed the expressio...

How the COVID-19 Pandemic Impacted Oncological Molecular Diagnosis: A Picture f...

Introduction. The Portuguese healthcare system had to adapt at short notice to the COVID-19 pandemic. We implemented workflow changes to our molecular pathology laboratory, a national reference center, to maximize safety and productivity. We assess the impact this situation had on our caseload and what conclusions can be drawn about the wider impact of the pandemic in oncological therapy in Portugal. Material a...

Breast cancer subtypes: implications for the treatment and survival of patients...

Background. Data regarding breast cancer epidemiology, treatment and survival in Africa are scarce. We aimed to assess the distribution of breast cancer subtypes in Mozambique and its impact on patients’ treatment and survival. The concordance of biomarker assessment between cytological and histological samples was also evaluated. Methods. Prospective cohort study including 210 patients diagnosed between Januar...

BR-BCSC Signature: The Cancer Stem Cell Profile Enriched in Brain Metastases th...

Brain metastases remain an unmet clinical need in breast oncology, being frequently found in HER2-overexpressing and triple-negative carcinomas. These tumors were reported to be highly cancer stem-like cell-enriched, suggesting that brain metastases probably arise by the seeding of cancer cells with stem features. Accordingly, we found that brain-tropic breast cancer cells show increased stem cell activity and ...

Fine needle aspiration cytology in Mozambique: Report of a 15-year experience

Background Fine needle aspiration cytology (FNAC) is an important diagnostic tool in a range of medical settings. It is fast, quick and a highly accurate diagnostic method and can be used, in settings with minimal laboratory infrastructures. Methods In this report, we describe the experience in the use of FNAC since it is introduction in 1996 in the Anatomical Pathology Service of the Maputo Central Hospital (M...