Most human ovarian tumors are classified into one of several categories based on presumed histogenesis and direction of differentiation. Separate categories are reserved for neoplasms composed of cells of several origins and for nonneoplastic disorders that simulate neoplasms. Using the World Health Organization Histologic Classification of Ovarian Tumors, histologic features for common and rar...

In adult patients, testicular tumors consist predominantly of seminoma, embryonal carcinoma, teratoma, choriocarcinoma and mixtures of these. In infants and children, yolk sac tumor and teratoma are the usual tumors; in older age patients, it is predominantly spermatocytic seminoma and malignant lymphoma, although the others may occur as well. Leydig and Sertoli-granulosa cell tumors occur in a...

Introduction: Glomus tympanicum (GT) is a benign primary tumor of the middle ear. The evolution of endoscopic ear surgery has allowed for an alternative approach to managing this vascular tumor. The purpose of this study was to evaluate an endoscopic approach in GT surgery, and also to investigate its applicability and feasibility.   Materials and Methods: Prospectively, 13 class I and II patie...

The updated, recently published 2021 WHO classification of thymic tumors incorporates the most recent advances in field pathology, with particular emphasis on primary epithelial neoplasms. This new edition retains basic format previous editions for neoplasms reaffirming schema originally proposed first edition, which utilized a combination letters and numbers designation these tumors. Only mini...

Background: One of the leading causes of death is brain tumors. Accurate tumor classification leads to appropriate decision making and providing the most efficient treatment to the patients. This study aims to optimize brain tumor MR images classification accuracy using optimal threshold, PCA and training Adaptive Neuro Fuzzy Inference System (ANFIS) with different repetitions.Material and Meth...

background: as children comprise a considerable proportion of our population, the importance of local epidemiologic research and geographic and racial differences can’t be disputed on childhood malignancies. methods: in this descriptive retrospective study, we extensively reviewed the medical records of patients younger than 15 years of age, diagnosed with solid malignant tumors, from 1996 to 2...

correct diagnosis and classification of lymphoid neoplasms depends on the integration of morphologic, immunophenotypic and molecular genetic features. the mature small b cell lymphomas despite their overlapping histomorphologies, have different clinical behavior and treatment. in this review, differential diagnosis of this category of tumors and a practical approach based on biomarkers evaluati...