Chapters authored
Histopathology and Molecular Pathology of Bone and Extraskeletal Osteosarcomas
Part of the book: Osteosarcoma
Long Noncoding RNAs in Osteosarcoma: Mechanisms and Potential Clinical Implications
Long noncoding RNAs (lncRNAs) are noncoding transcripts consisting of a diverse class of long RNAs of more than 200 nucleotides in length. Recent studies have shown that lncRNAs are involved in cell signal transduction pathways, cell cycle and cell death regulation, chromatin remodeling, and gene expression regulation at the transcriptional and posttranscriptional levels. They are also involved in the metastatic process of different types of tumors, such as urothelial carcinoma, colon carcinoma, breast carcinoma, lung carcinoma, and hepatocellular carcinoma. In addition, lncRNAs demonstrate precise expression patterns in specific tissues and cells and therefore play important roles in cell differentiation and tissue development. In this chapter, we review the molecular mechanisms of lncRNA cell functions and their involvement in the pathogenesis, progression, and metastasis of osteosarcoma, a rare bone tumor of childhood and adolescence. We also review emerging clinical implications of lncRNA use as potential prognostic biomarkers and therapeutic targets, as well as their putative involvement in drug resistance, in osteosarcoma progression, and in therapeutic interventions.
Part of the book: Osteosarcoma
Recent Advances in Classification and Histopathological Diagnosis of Ovarian Epithelial Malignant Tumours
Ovarian tumours are a heterogeneous group of neoplasms classified based on histopathologic type and grade of differentiation. They comprise a broad range of tumours from benign and borderline to malignant histotypes characterised by different histopathological, immunophenotypic and molecular features. The purpose of this chapter is to present an overview of the recent advances in the ovarian epithelial malignant tumours classification along with the histopathological, immunophenotypic and molecular diagnostic criteria highlighting areas of terminology discrepancies or changes and diagnostic challenges. These changes provide a better understanding of the ovarian tumours nature and lead to a more efficient therapeutic management of these pathological entities.
Part of the book: Recent Advances, New Perspectives and Applications in the Treatment of Ovarian Cancer