Barkovich classification of focal cortical dysplasia (historical)
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Barkovich classifies focal cortical dysplasias among the his extensive classification system for malformations of focalcortical development, distributing them as follows:
- Type I and type IIb (transcortical dysplasia - Taylor type with balloon cells) as non-neoplastic malformations due to abnormal neuronal and glial proliferation or apoptosia
-
Type IIa (transcortical dysplasia without balloon cells) as malformations due to abnormal cortical
dysplasiawasorganization.
In contrast, along with the Palmini classification, the leading classification system used for focal cortical dysplasia. It has, based its classification purely on histopathological grounds, and has recently been largely replaced by the Blumcke classification of focal cortical dysplasia (2011).
The classification system proposed by Barkovich is as follows:
-
type I(non-Taylor dysplasia)-
type Ia: dyslamination and mild malformation of cortical development -
type Ib: isolated architectural abnormalities and cytoarchitectural dysplasia (without presence of dysmorphic neurons) -
type Ic: combination of both Ia and Ib
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type II(Taylor dysplasia): most common-
type IIa: no balloon cells -
type IIb: balloon cells present
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type III-
type IIIa: with hippocampal sclerosis -
type IIIb: with epilepsy associated tumours -
type IIIc: with vascular malformations
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-<p><strong>Barkovich classification of focal cortical dysplasia</strong> was, along with the <a href="/articles/palmini-classification-of-focal-cortical-dysplasia">Palmini classification</a>, the leading classification system used for <a href="/articles/focal-cortical-dysplasia">focal cortical dysplasia</a>. It has recently been largely replaced by the <a href="/articles/blumcke-classification-of-focal-cortical-dysplasia">Blumcke classification of focal cortical dysplasia</a> (2011). </p><p>The classification system proposed by Barkovich is as follows:</p><ul>-<li>-<strong>type I</strong> (<a href="/articles/non-taylor-dysplasia">non-Taylor dysplasia</a>)<ul>-<li>-<strong>type Ia</strong>: dyslamination and mild malformation of cortical development</li>-<li>-<strong>type Ib</strong>: isolated architectural abnormalities and cytoarchitectural dysplasia (without presence of dysmorphic neurons)</li>-<li>-<strong>type Ic</strong>: combination of both Ia and Ib</li>-</ul>-</li>-<li>-<strong>type II</strong> (<a href="/articles/taylor-dysplasia">Taylor dysplasia</a>): most common <ul>-<li>-<strong>type IIa</strong>: no balloon cells</li>-<li>-<strong>type IIb</strong>: balloon cells present</li>-</ul>-</li>-<li>-<strong>type III</strong><ul>-<li>-<strong>type IIIa</strong>: with hippocampal sclerosis</li>-<li>-<strong>type IIIb</strong>: with epilepsy associated tumours</li>-<li>-<strong>type IIIc</strong>: with vascular malformations</li>-</ul>-</li>-</ul>- +<p><strong>Barkovich classifies focal cortical dysplasias</strong> among the his extensive <a title="Classification system for malformations of cortical development" href="/articles/classification-system-for-malformations-of-cortical-development">classification system for malformations of cortical development</a>, distributing them as follows:</p><ul>
- +<li>Type I and type IIb (transcortical dysplasia - Taylor type with balloon cells) as non-neoplastic malformations due to abnormal neuronal and glial proliferation or apoptosia </li>
- +<li>Type IIa (transcortical dysplasia without balloon cells) as malformations due to abnormal cortical organization. </li>
- +</ul><p>In contrast, the <a href="/articles/palmini-classification-of-focal-cortical-dysplasia">Palmini classification</a>, the leading classification system used for <a href="/articles/focal-cortical-dysplasia">focal cortical dysplasia</a>, based its classification purely on histopathological grounds, and has recently been largely replaced by the <a href="/articles/blumcke-classification-of-focal-cortical-dysplasia">Blumcke classification of focal cortical dysplasia</a> (2011). </p><p> </p>
References changed:
- 3. Kabat J, KróL P. Focal cortical dysplasia - review. Pol J Radiol. 2012;77 (2): 35-43. <a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3403799">Free text at pubmed</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/22844307">Pubmed citation</a><span class="ref_v3"></span>
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