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Relating to metastasis.
Farlex Partner Medical Dictionary © Farlex 2012

brain tumor

Neurology A neoplasm affecting the brain which may be 1º–brain or meninges, or 2º–ie metastatic to the brain; malignant gliomas account for 2.5% of all cancer-related deaths; BTs are the 3rd most common CA in ages 15-34; 35,000 BTs occur/yr–US; 1st-degree relatives of children with brain tumors have a 5-fold ↑ in the risk of CNS tumors, leukemia, and other childhood tumors in the affected family Clinical Seizures, vision or hearing loss, hemiparesis, double vision, headache, weird behavior, N&V, memory loss Imaging MRI without and with contrast, CT Management Surgery, gamma knife radiotherapy are often effective; chemotherapy, immunotherapy are not. See Gamma knife.
Brain tumors/masses
Craniopharyngioma, colloid cysts
Meningioma, pituitary adenoma, acoustic neuroma, epidermoid tumors, choroid plexus papilloma
Primary–low grade
Pilocytic astrocytoma, astrocytoma, hemangioblastoma, oligodendroglioma, ganglioglioma
Anaplastic astrocytoma, glioblastoma multiforme, ependymoma, lymphoma, medulloblastoma, primitive neuroectodermal tumor, germ cell tumor, pineal cell tumor, chordoma, choroid plexus carcinoma
Carcinoma, meningeal carcinomatosis
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Relating to metastasis.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


(mĕ-tăs′tă-sis) plural.metastases [″ + stasis, stand]
1. Movement of bacteria or body cells (esp. cancer cells) from one part of the body to another.
Enlarge picture
METASTASES: CT scan of liver (upper left) with round metastatic tumors (Courtesy of Harvey Hatch, MD, Curry General Hospital)
2. Change in location of a disease or of its manifestations or transfer from one organ or part to another not directly connected. See: illustration

The usual application is to the manifestation of a malignancy as a secondary growth arising from the primary growth in a new location. The malignant cells may spread through the lymphatic circulation, the bloodstream, or avenues such as the cerebrospinal fluid.

metastatic (mĕt″ă-stăt′ĭk), adjective
Medical Dictionary, © 2009 Farlex and Partners


The term used to describe a secondary cancer, or one that has spread from one area of the body to another.
Mentioned in: Coagulation Disorders
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
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The objective of this study was to evaluate, from a Canadian public payer perspective, the cost-effectiveness of 6 cycles of docetaxel plus ADT compared to ADT alone to treat patients with high-volume metastatic HSPC.
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IHC staining is important for diagnosis and treatment, and IHC markers commonly used for the diagnosis of primary RCC are PAX2, PAX8, RCC marker, CD10, and a combination of vimentin and CK.[9] However, the correct diagnosis of metastatic RCC remains challenging because the morphology of metastatic RCC differs from that of primary RCC.
Survival rates for someone with metastatic breast cancer really depend on the type of breast cancer, said Dr.
"Aggressive local therapy in the setting of metastatic disease needs to be studied carefully before clinical adoption."
Patients with advanced breast cancer require extensive care and intensive use of medical and other resources, but, until this study, there were no reliable estimates of the number of women actually living with metastatic disease in the United States, the authors said.
These results provide an initial step toward the improvement of lung cancer therapy that is based on measurement of the expression of genes in the metastatic lymph nodes.
Treatment for metastatic disease remains unsatisfactory.
Preoperative lymphoscintigraphy showed a focus of increased activity in the left axilla, which was removed and negative on final pathology for metastatic melanoma.
The key point in RCC presenting with a sinonasal metastasis is differential diagnosis with primary tumors such as adenocarcinomas, angiofibromas, hemangiopericytomas, melanomas, hemangiomas, metastatic tumors from the breast and lungs, and, more rarely, systemic diseases such as Wegener's and midline granulomas [48].
[1,6] Current acceptable standards of practice include intraoperative frozen sections of SLN for the detection of metastatic breast carcinoma.