Transcollicular Approach to Intrinsic Tectal Lesions

Transcollicular Approach to Intrinsic Tectal Lesions AbstractOBJECTIVE:We used a paramedian, infratentorial-supracerebellar, transcollicular approach to resect 11 intrinsic tectal lesions, including 8 tumors and 3 hematomas, in 11 patients. The route of access to the lesions was designed to minimize the anatomic and functional damage to the surrounding structures.METHODS:Access was through one superior colliculus in each of seven patients, through one inferior colliculus in each of two patients, and through the superior and inferior colliculi of one side in each of two patients.RESULTS:Of the eight tumors, three were totally resected, four were nearly totally resected, and one was partially resected. The preoperative ocular symptoms did not change in six of these eight patients and worsened in two, and the neurological deficits, except ocular symptoms, improved in two. All three hematomas were completely removed, along with abnormal blood vessels in the wall of the hematoma cavity; all three of these patients experienced neurological improvement.CONCLUSION:We conclude that the paramedian, infratentorial-supracerebellar, transcollicular approach permits safe removal of intrinsic tectal lesions. Resection of the superior or inferior colliculus or both on one side seems to be neurologically well tolerated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Neurosurgery Oxford University Press

Transcollicular Approach to Intrinsic Tectal Lesions

Transcollicular Approach to Intrinsic Tectal Lesions

TECHNIQUE AND ASSESSMENTS Yasuhiko Kaku, M .D ., Yasuhiro Yonekawa, M .D ., Ethan Taub, M .D. Department of Neurosurgery, U niversity Hospital of Z u ric h , Z u rich , Sw itzerland O B JE C T IV E : W e used a paramedian, infratentorial-supracerebellar, transcollicular approach to resect 11 intrinsic tectal lesions, including 8 tumors and 3 hematomas, in 11 patients. The route of access to the lesions was designed to minimize the anatomic and functional damage to the surrounding structures. M E T H O D S : Access was through one superior colliculus in each of seven patients, through one inferior colliculus in each of two patients, and through the superior and inferior colliculi of one side in each of two patients. RESULTS: O f the eight tumors, three were totally resected, four w ere nearly totally resected, and one was partially resected. The preoperative ocular symptoms did not change in six of these eight patients and worsened in two, ' and the neurological deficits, except ocular symptoms, improved in two. All three hematomas w ere completely removed, along with abnormal blood vessels in the w all of the hematoma cavity; all three of these patients experienced neurological improvement. f C O N C L U S IO N : W e conclude that the paramedian, infratentorial-supracerebellar, transcollicular approach permits safe removal of intrinsic tectal lesions. Resection of the superior or inferior colliculus or both on one side seems to be neurologically well tolerated. (Neurosurgery 4 4 :3 3 8 -3 4 4 , 1999) Key words: Inferior c o llic u lu s, M idbrain, Superior c o llic u lu s, Surgical approach, Tectum T he operative treatment of intrinsic tectal lesions remains unilateral trochlear nerve paresis, two of oculomotor nene 3 a major challenge. Recent advances in neuroimaging paresis (one unilateral and one bilateral), and one of unilateral and in microsurgical technique have made such opera­ internuclear ophthalmoplegia. Four patients had sy m p to m s l tions...
Loading next page...
 
/lp/ou_press/transcollicular-approach-to-intrinsic-tectal-lesions-09g80DrNsU
Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
ISSN
0148-396X
eISSN
1524-4040
D.O.I.
10.1097/00006123-199902000-00052
Publisher site
See Article on Publisher Site

Abstract

AbstractOBJECTIVE:We used a paramedian, infratentorial-supracerebellar, transcollicular approach to resect 11 intrinsic tectal lesions, including 8 tumors and 3 hematomas, in 11 patients. The route of access to the lesions was designed to minimize the anatomic and functional damage to the surrounding structures.METHODS:Access was through one superior colliculus in each of seven patients, through one inferior colliculus in each of two patients, and through the superior and inferior colliculi of one side in each of two patients.RESULTS:Of the eight tumors, three were totally resected, four were nearly totally resected, and one was partially resected. The preoperative ocular symptoms did not change in six of these eight patients and worsened in two, and the neurological deficits, except ocular symptoms, improved in two. All three hematomas were completely removed, along with abnormal blood vessels in the wall of the hematoma cavity; all three of these patients experienced neurological improvement.CONCLUSION:We conclude that the paramedian, infratentorial-supracerebellar, transcollicular approach permits safe removal of intrinsic tectal lesions. Resection of the superior or inferior colliculus or both on one side seems to be neurologically well tolerated.

Journal

NeurosurgeryOxford University Press

Published: Feb 1, 1999

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off