Document Detail


Typical and atypical neurovascular relations of the trigeminal nerve in the cerebellopontine angle: an anatomical study.
MedLine Citation:
PMID:  19214365     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of the present study was to anatomically evaluate in adults the neurovascular trigeminal relations in the cerebellopontine angle (CPA), from a morphological and topographical perspective and thus to improve, detail and debate the pre-existing information, with educational and surgical implications. For the present anatomical study we performed bilateral dissections on 20 human adult skull bases, in formalin-fixed cadavers, at the level of the cerebellopontine angle, using the anatomical superior approach; we also studied 20 additional drawn specimens-cerebellum and brainstems, from autopsied cadavers, in order to better document the vasculature at the trigeminal root entry zone (REZ). The most constant but not exclusive neurovascular relations of the trigeminal nerves were those with the superior cerebellar artery (SCA) and the superior petrosal vein (the petrosal vein of Dandy). The regular possibility for the SCA to appear divided into a medial and a lateral branch and these to represent individual trigeminal relations at the level of the pontine cistern or REZ must not be neglected. The petrosal vein tributaries can also represent superior, inferior, or interradicular trigeminal relations. Arterioles emerging from the SCA or the anterior inferior cerebellar artery (AICA) represented trigeminal relations either at the REZ or were coursing between the trigeminal roots. A dissected specimen presented a radicular trigeminal artery emerging from the basilar artery and entering the trigeminal cavum inferior to the nerve. Another specimen presented two bony lamellae superior to the trigeminal nerve at the entrance in the trigeminal cavum-these lamellae were embedded within the lateral border of tentorium cerebelli and the posterior petroclinoid ligament. So we bring here an evidence-based support extremely useful not only for specialists dealing with this area but also for educational purposes. It appears important not only to consider the typical anatomy at this level but also to take into account the atypical and hardly predictable morphologies that may alter the diagnoses and the specific surgical procedures.
Authors:
M C Rusu; R V Ivaşcu; R Cergan; D Păduraru; L Podoleanu
Related Documents :
25420395 - Blunt trauma of thorax with subclavian and axillary artery lesion--case report.
23364425 - Rattus model utilizing selective pulmonary ischemia induces bronchiolitis obliterans or...
10369825 - Perforating branches from offending arteries in hemifacial spasm: anatomical correlatio...
8677495 - Selective angiography of the vertebral artery in the rabbit: technical note.
11416405 - Aortic stenosis in the elderly: a decade of changing concepts.
2396935 - Small deep cerebral infarcts associated with occlusive internal carotid artery disease....
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-02-12
Journal Detail:
Title:  Surgical and radiologic anatomy : SRA     Volume:  31     ISSN:  1279-8517     ISO Abbreviation:  Surg Radiol Anat     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-08-05     Completed Date:  2009-10-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8608029     Medline TA:  Surg Radiol Anat     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  507-16     Citation Subset:  IM    
Affiliation:
Department of Anatomy and Embryology, Faculty of Dental Medicine, University of Medicine and Pharmacy Carol Davila, 8 Bd. Eroilor Sanitari, Bucharest, Romania. anatomon@gmail.com
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Arteries
Cerebellopontine Angle / anatomy & histology*
Cerebellum / blood supply
Female
Humans
Male
Middle Aged
Pons / anatomy & histology
Trigeminal Nerve / anatomy & histology,  blood supply*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Anatomical assessment of bile ducts of Luschka in human fetuses.
Next Document:  Longitudinal striae of the human fornix: shape, relations and variations.