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Thalamic tumors in children : a reappraisal

Identifieur interne : 009318 ( Main/Exploration ); précédent : 009317; suivant : 009319

Thalamic tumors in children : a reappraisal

Auteurs : Stephanie Puget [France] ; Darach W. Crimmins [Royaume-Uni] ; Matthew R. Garnett [France] ; Jacques Grill [France] ; Ricardo Oliveira [France] ; Nathalie Boddaert [France] ; Alison Wray [Australie] ; Arielle Lelouch-Tubiana [France] ; Thomas Roujeau [France] ; Federico Di Rocco [France] ; Michel Zerah [France] ; Christian Sainte-Rose [France]

Source :

RBID : Pascal:07-0238069

Descripteurs français

English descriptors

Abstract

Object Two to five percent of pediatric brain tumors are located in the thalamus. The optimal management for these tumors remains unclear. The aim of this study was to determine whether clinical and neuroimaging features could guide treatment, and to what extent these features, together with histological diagnosis and treatment modalities, influenced survival. Methods. The records of 69 children who presented with a thalamic tumor between 1989 and 2003 were retrospectively reviewed. Three groups of tumors were analyzed separately: 1) unilateral thalamic tumors (54 lesions): 2) thalamopeduncular tumors (six); and 3) bilateral thalamic tumors (nine). In the patients in whom a unilateral thalamic tumor was diagnosed, 33 had an astrocytic tumor. Of the 54 patients, 32 had a low-grade and 22 had a high-grade tumor. The survival rate was significantly better for patients with the following characteristics: symptom duration longer than 2 months (p < 0.001), lesions with low-grade histological features (p = 0.003), and tumor excision greater than 90% at surgery (p = 0.04). The perioperative morbidity and mortality rates were 37 and 4%, respectively. Fifty-four percent of the patients in this group had a long-term and independent survival. The thalamopeduncular tumors were mostly pilocytic astrocytomas, which had a good prognosis following surgery. The bilateral thalamic tumors in this series were mainly low-grade astrocytic lesions, and more than half of the children attained long-term survival (mean follow-up duration 4.5 years). Conclusions. The majority of tumors arising in the thalamus are astrocytic, of which less than half are high-grade lesions. Histological evaluations should be performed in all patients in whom resection is being considered for discrete lesions. Long-term survival is possible in patients with these tumors.


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<name sortKey="Di Rocco, Federico" sort="Di Rocco, Federico" uniqKey="Di Rocco F" first="Federico" last="Di Rocco">Federico Di Rocco</name>
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<name sortKey="Sainte Rose, Christian" sort="Sainte Rose, Christian" uniqKey="Sainte Rose C" first="Christian" last="Sainte-Rose">Christian Sainte-Rose</name>
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<title level="j" type="main">Journal of neurosurgery. Pediatrics</title>
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<title level="j" type="main">Journal of neurosurgery. Pediatrics</title>
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<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>Child</term>
<term>Glioma</term>
<term>Tumor</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Tumeur</term>
<term>Gliome</term>
<term>Enfant</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr">
<term>Enfant</term>
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<front>
<div type="abstract" xml:lang="en">Object Two to five percent of pediatric brain tumors are located in the thalamus. The optimal management for these tumors remains unclear. The aim of this study was to determine whether clinical and neuroimaging features could guide treatment, and to what extent these features, together with histological diagnosis and treatment modalities, influenced survival. Methods. The records of 69 children who presented with a thalamic tumor between 1989 and 2003 were retrospectively reviewed. Three groups of tumors were analyzed separately: 1) unilateral thalamic tumors (54 lesions): 2) thalamopeduncular tumors (six); and 3) bilateral thalamic tumors (nine). In the patients in whom a unilateral thalamic tumor was diagnosed, 33 had an astrocytic tumor. Of the 54 patients, 32 had a low-grade and 22 had a high-grade tumor. The survival rate was significantly better for patients with the following characteristics: symptom duration longer than 2 months (p < 0.001), lesions with low-grade histological features (p = 0.003), and tumor excision greater than 90% at surgery (p = 0.04). The perioperative morbidity and mortality rates were 37 and 4%, respectively. Fifty-four percent of the patients in this group had a long-term and independent survival. The thalamopeduncular tumors were mostly pilocytic astrocytomas, which had a good prognosis following surgery. The bilateral thalamic tumors in this series were mainly low-grade astrocytic lesions, and more than half of the children attained long-term survival (mean follow-up duration 4.5 years). Conclusions. The majority of tumors arising in the thalamus are astrocytic, of which less than half are high-grade lesions. Histological evaluations should be performed in all patients in whom resection is being considered for discrete lesions. Long-term survival is possible in patients with these tumors.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Australie</li>
<li>France</li>
<li>Royaume-Uni</li>
</country>
<region>
<li>Victoria (État)</li>
<li>Île-de-France</li>
</region>
<settlement>
<li>Melbourne</li>
<li>Paris</li>
</settlement>
</list>
<tree>
<country name="France">
<noRegion>
<name sortKey="Puget, Stephanie" sort="Puget, Stephanie" uniqKey="Puget S" first="Stephanie" last="Puget">Stephanie Puget</name>
</noRegion>
<name sortKey="Boddaert, Nathalie" sort="Boddaert, Nathalie" uniqKey="Boddaert N" first="Nathalie" last="Boddaert">Nathalie Boddaert</name>
<name sortKey="Di Rocco, Federico" sort="Di Rocco, Federico" uniqKey="Di Rocco F" first="Federico" last="Di Rocco">Federico Di Rocco</name>
<name sortKey="Garnett, Matthew R" sort="Garnett, Matthew R" uniqKey="Garnett M" first="Matthew R." last="Garnett">Matthew R. Garnett</name>
<name sortKey="Grill, Jacques" sort="Grill, Jacques" uniqKey="Grill J" first="Jacques" last="Grill">Jacques Grill</name>
<name sortKey="Lelouch Tubiana, Arielle" sort="Lelouch Tubiana, Arielle" uniqKey="Lelouch Tubiana A" first="Arielle" last="Lelouch-Tubiana">Arielle Lelouch-Tubiana</name>
<name sortKey="Oliveira, Ricardo" sort="Oliveira, Ricardo" uniqKey="Oliveira R" first="Ricardo" last="Oliveira">Ricardo Oliveira</name>
<name sortKey="Roujeau, Thomas" sort="Roujeau, Thomas" uniqKey="Roujeau T" first="Thomas" last="Roujeau">Thomas Roujeau</name>
<name sortKey="Sainte Rose, Christian" sort="Sainte Rose, Christian" uniqKey="Sainte Rose C" first="Christian" last="Sainte-Rose">Christian Sainte-Rose</name>
<name sortKey="Zerah, Michel" sort="Zerah, Michel" uniqKey="Zerah M" first="Michel" last="Zerah">Michel Zerah</name>
</country>
<country name="Royaume-Uni">
<noRegion>
<name sortKey="Crimmins, Darach W" sort="Crimmins, Darach W" uniqKey="Crimmins D" first="Darach W." last="Crimmins">Darach W. Crimmins</name>
</noRegion>
</country>
<country name="Australie">
<region name="Victoria (État)">
<name sortKey="Wray, Alison" sort="Wray, Alison" uniqKey="Wray A" first="Alison" last="Wray">Alison Wray</name>
</region>
</country>
</tree>
</affiliations>
</record>

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