Results 31 to 40 of about 45,255 (304)

Primary cerebellopontine angle melanocytoma: review. [PDF]

open access: yes, 2012
Introduction Primary cerebellopontine angle melanocytomas (PCPAMs) are very rare. Their natural history and prognosis are not fully understood. We reviewed the literature and add a new case to analyze PCPAM's presentation, radiological features, and ...
Elashaal, R   +3 more
core   +1 more source

Analysis of the Volumes of the Posterior Cranial Fossa, Cerebellum, and Herniated Tonsils Using the Stereological Methods in Patients with Chiari Type I Malformation

open access: yesThe Scientific World Journal, 2012
Objective. The aim of this study was to determine the posterior cranial fossa volume, cerebellar volume, and herniated tonsillar volume in patients with chiari type I malformation and control subjects using stereological methods.
Ümit Erkan Vurdem   +4 more
doaj   +1 more source

Cranial nerves hyperactive dysfunction syndromes in combination with extracerebral tumors of posterior fossa

open access: yesUkrainian Neurosurgical Journal, 2009
22 cases of hyperactive dysfunction syndromes (HDS) of cranial nerves (20 — trigeminal neuralgia, 2 — hemifacial spasm) in combination with extracerebral tumors in posterior fossa (9 — meningioma, 6 — acoustic nerve tumor, 6 — cholesteatoma, 1
V. O. Fedirko
doaj   +1 more source

Cranial anatomy and palaeoneurology of the archosaur Riojasuchus tenuisceps from the Los Colorados Formation, La Rioja, Argentina. [PDF]

open access: yes, 2016
Riojasuchus tenuisceps Bonaparte 1967 is currently known from four specimens, includingtwo complete skulls, collected in the late 1960s from the upper levels of the Los ColoradosFormation (Late Triassic), La Rioja, Argentina.
Desojo, Julia Brenda, Von Baczko, Belen
core   +1 more source

Imaging for juvenile angiofibroma [PDF]

open access: yes, 2002
Juvenile angiofibroma presents characteristic imaging signs, many of which allow diagnosis and accurate estimation of extent without recourse to the dangers of biopsy.
Howard, D, Lloyd, G, Lund, VJ, Savy, L
core   +1 more source

A new dromaeosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Wulansuhai Formation of Inner Mongolia, China [PDF]

open access: yes, 2010
We describe a new dromaeosaurid theropod from the Upper Cretaceous Wulansuhai Formation of Bayan Mandahu, Inner Mongolia. The new taxon, Linheraptor exquisitus gen. et sp.
Choiniere, J.N.   +10 more
core   +1 more source

Comparative analysis of sexual variability of morphometric parameters of the posterior cranial fossa, cerebellum and their ratios in adults

open access: yesИзвестия высших учебных заведений. Поволжский регион: Медицинские науки, 2023
Background. The relevance of this study is to study the variability of the structures of the posterior cranial fossa, cerebellum and their ratios related to the magnitude of the basilar angle, which are taken into account in neurorentgenology as ...
O.Yu. Aleshkina   +6 more
doaj   +1 more source

Morphological study of bone structure of the posterior cranial fossa in adults with Chiari malformation type Ⅰ without basilar invagination

open access: yesDi-san junyi daxue xuebao, 2020
Objective To examine the morphological characteristics of the bone structure in the posterior cranial fossa in adult patients with Chiari malformation type Ⅰ (CMⅠ) without basilar invagination. Methods Thirty-eight adult patients with CMⅠ without basilar
WANG Shengxi   +4 more
doaj   +1 more source

The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution [PDF]

open access: yes, 2015
The previous oldest known fossil snakes date from ∼100 million year old sediments (Upper Cretaceous) and are both morphologically and phylogenetically diverse, indicating that snakes underwent a much earlier origin and adaptive radiation.
Apesteguía, Sebastián   +3 more
core   +1 more source

Evolutionary relationships and systematics of Atoposauridae (Crocodylomorpha: Neosuchia): implications for the rise of Eusuchia [PDF]

open access: yes, 2016
Atoposaurids are a group of small-bodied, extinct crocodyliforms, regarded as an important component of Jurassic and Cretaceous Laurasian semi-aquatic ecosystems.
Mannion, PD, Tennant, JP, Upchurch, P
core   +3 more sources

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