Results 41 to 50 of about 93,115 (369)

Brain tumor detection using artificial convolutional neural networks [PDF]

open access: yesarXiv, 2022
In this paper, a convolutional neural network (CNN) was used to classify NMR images of human brains with 4 different types of tumors: meningioma, glioma and pituitary gland tumors. During the training phase of this project, an accuracy of 100% was obtained, meanwhile, in the evaluation phase the precision was 96%.
arxiv  

The Transition from Microscopic to Endoscopic Transsphenoidal Surgery In High Case Load Neurosurgical Centers: The Groote Schuur Hospital Experience [PDF]

open access: yes, 2016
Dott and Guiot first pioneered the transsphenoidal route for pituitary tumors during the 1950s and 1960s, and the microscope was introduced for the procedure by Hardy in the 1970s.
Semple, Patrik L
core   +1 more source

Pituitary tumors in patients with MEN1 syndrome

open access: yesClinics, 2012
We briefly review the characteristics of pituitary tumors associated with multiple endocrine neoplasia type 1. Multiple endocrine neoplasia type 1 is an autosomal-dominant disorder most commonly characterized by tumors of the pituitary, parathyroid ...
Luis V. Syro   +8 more
doaj   +1 more source

Anti-VEGF Therapy in Refractory Pituitary Adenomas and Pituitary Carcinomas: A Review

open access: yesFrontiers in Oncology, 2021
Most pituitary tumors are considered benign adenomas, and only 0.1%–0.2% of them present metastasis and are defined as pituitary carcinomas (PCs). Refractory pituitary adenomas (PAs) lie between benign adenomas and true malignant PCs and are defined as ...
Congxin Dai   +4 more
doaj   +1 more source

Vascular endothelial growth factor production and regulation in rodent and human pituitary tumor cells in vitro [PDF]

open access: yes, 2001
Angiogenesis, the formation of a new blood supply, is an essential step in tumorigenesis. Although vascular endothelial growth factor (VEGF) is known to be a very potent angiogenic factor in most solid tumors, little is known about its production and ...
Gloddek, Jutta   +7 more
core   +1 more source

PITUITARY TUMOR [PDF]

open access: yesSouthern Medical Journal, 1909
n ...
openaire   +1 more source

Role of microRNA in oncogenesis of pituitary tumors and their practical significance [PDF]

open access: yesТерапевтический архив, 2016
Microribonucleic acids (miRNAs) are a class of noncoding RNAs that regulate posttranscriptional gene expression. These molecules are regulators of cell proliferation, metabolism, apoptosis, and differentiation.
A M Lapshina   +4 more
doaj   +1 more source

Treatment of functioning pituitary macroadenoma with endoscopic transsphenoidal surgery: a case report [PDF]

open access: yes, 2021
Pituitary macroadenomas are benign tumors in the pituitary gland measuring more than 1 cm in diameter. Pituitary adenomas account for 8 to 10% of all intracranial tumors and occur primarily in the anterior pituitary lobe and rarely in the posterior lobe.
Adhimarta, Willy   +7 more
core   +1 more source

Deprenyl, an old drug with new anticancer potential: Mini review [PDF]

open access: yesarXiv, 2021
The anticancer potential of monoamine oxidase (MAO) was observed in pre-clinical assays conducted with cell cultures and animals. L-Deprenyl (DEP) causes apoptosis in melanoma, leukemia and mammary cells. High-dose DEP has shown toxicity in mammary and pituitary cancers, as well as in monoblastic leukemia, in rats.
arxiv  

Advances in understanding pituitary tumors.

open access: yes, 2014
Pituitary tumors are common in the general population. Since neuroimaging techniques have improved, pituitary tumors are more often diagnosed incidentally. About 16.7% of the general population show changes in the pituitary gland.
Kopczak, A., Renner, U., Stalla, G.
core   +1 more source

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