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Not neoplastic.
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.
References in periodicals archive ?
Nonneoplastic 11 Lymphoepithelial cyst 3 Inflammation 4 Epidermal inclusion cyst 1 Granuloma 1 Ectopic thyroid 1 Benign salivary gland 1 Benign 32 Monomorphic adenoma 1 neoplasm Pleomorphic adenoma 16 Warthin tumor 10 Granular cell tumor 2 Lipoma(tosis)/hibernoma 2 Oncocytoma 1 Malignant 14 Adenocarcinoma, NOS 4 neoplasm Mucoepidermoid carcinoma 4 Diffuse large B cell lymphoma 1 Carcinoma ex pleomorphic adenoma 1 Squamous cell carcinoma 2 Poorly differentiated carcinoma 1 Metastatic carcinoma 1 Abbreviation: NOS, not otherwise specified.
Second, because of their capacity for error correction and ability to detect low prevalence alleles (32), smMIPs can identify instability events even in the background of substantial tumor heterogeneity or nonneoplastic cell contamination, which limits both conventional diagnostics and existing NGS approaches.
GB polyp Flat gallbladder wall thickening Adenocarcinoma 5 28 Adenoma 10 0 Adenomyosis 0 63 Nonneoplastic polyp 28 7 Chronic cholecystitis 0 21 Total 43 119 Table 2: Diagnostic effectiveness comparison for ETBD cytology and ETGD cytology.
Of these, 4 cases were neoplastic and 15 cases were nonneoplastic. Of 19 cases, cell block diagnosis correlated with histopathology in 14 cases.
Polyps were classified as nonneoplastic and neoplastic GBPs, according to histopathological diagnoses.
The relative area under the curve was 0.892 for differentiation of ovarian cancer from benign nonneoplastic ovarian cysts, 0.894 for differentiation of ovarian cancer from benign epithelial tumors, and 0.865 for differentiation of endometrial cancer from endometrial polyps.
Most of polyps occurring in duodenum are nonneoplastic, which include ectopic gastric mucosa, hyperplastic polyps, and Brunner's gland hyperplasia.
Analysis of PVT1 expression in 24 melanoma tissues and 9 nonneoplastic nevi tissues [18] revealed that PVT1 is significantly upregulated in melanoma tissues compared with nonneoplastic nevi tissues (Figure 1(a)).
Calcified amorphous tumors (CATs) of the heart are an exceedingly rare nonneoplastic intracardiac mass that was originally described in 1997 by Reynolds et al.
However, multiple case reports and studies have shown that elevated CA19-9 levels beyond 1000 U/L occur in nonneoplastic benign conditions which lead to questioning of the use of CA19-9 as an adequate tumor marker for screening.
It contains images and bulleted discussion of pathology-based diagnoses, including congenital malformations; subarachnoid hemorrhage and aneurysms; stroke; vascular malformations; neoplasms; primary nonneoplastic cysts; infectious, inflammatory, and demyelinating disease; inherited metabolic/degenerative disorders; acquired toxic/metabolic/degenerative disorders; and anatomy-based diagnoses related to ventricles and cisterns, the sella and pituitary, the CPA-IAC (cerebellopontine angle-internal auditory canal), and skull, scalp, and meninges.