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  • tumors
  • They are much less common than germ cell tumors arising in the testes, and account for only 1 to 5% of all germ cell neoplasms. (wikipedia.org)
  • Vascular anomalies are divided into vascular tumors/neoplasms which include infantile hemangiomas, and vascular malformations which include entities with enlarged or abnormal vessels such as capillary malformations (port wine stains), venous malformations, and lymphatic malformations. (wikipedia.org)
  • The majority of tumors exhibit a spherical perimeter with either a solid or cystic interior, comprising peripheral vasculature and epithelioid neoplasms. (wikipedia.org)
  • Neuro-oncology is the study of brain and spinal cord neoplasms, many of which are (at least eventually) very dangerous and life-threatening (astrocytoma, glioma, glioblastoma multiforme, ependymoma, pontine glioma, and brain stem tumors are among the many examples of these). (wikipedia.org)
  • surgical
  • Thyroid nodules are a major presentation of thyroid neoplasms, and are diagnosed by ultrasound guided fine needle aspiration (USG/FNA) or frequently by thyroidectomy (surgical removal and subsequent histological examination). (wikipedia.org)
  • features
  • In general, when brain lesions are smaller than Grade I, demarcating between these features is near impossible, often mistaking astroblastoma with glial neoplasms, high-grade astrocytes, and embryonal neoplasms. (wikipedia.org)
  • rare
  • However, the IOM extrapolated data from chronic lymphocytic leukemia and non-Hodgkin lymphoma to conclude that HCL and other rare B-cell neoplasms may share this risk factor. (wikipedia.org)
  • patients
  • The organization's most recent grade in 2007 assigned astroblastoma as a high-grade III and grade IV neoplasm, signifying that the glial tumor is dangerous for patients, causing fatal problems even after surgery. (wikipedia.org)
  • cells
  • Medullary thyroid carcinoma (MTC) is a neuroendocrine tumor which originates from parafollicular c-cells producing calcitonin and comprises 2.1% of thyroid neoplasms. (biomedcentral.com)