Epidermoid cyst (4th ventricle)
Diagnosis certain
Updates to Case Attributes
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The patient went on to have surgery which confirmed the pre-operative diagnosis of an epidermoid cyst. The 4th ventricle is actually not that uncommon a location for this entity, but far less common than the cerebellopontine angle.
Histology
MICROSCOPIC DESCRIPTION: The sections show the lining and contents of an epidermal cyst. The lining is composed of squamous epithelium with a discernible granular layer. The contents comprise laminated keratin. No mesenchymal or appendageal components are identified. There is no evidence of tumour.
DIAGNOSIS: Epidermoid cyst
-<p>The patient went on to have surgery which confirmed the pre-operative diagnosis of an epidermoid cyst. </p><p><strong>Histology</strong></p><p>MICROSCOPIC DESCRIPTION: The sections show the lining and contents of an epidermal cyst. The lining is composed of squamous epithelium with a discernible granular layer. The contents comprise laminated keratin. No mesenchymal or appendageal components are identified. There is no evidence of tumour.</p><p>DIAGNOSIS: Epidermoid cyst</p>- +<p>The patient went on to have surgery which confirmed the pre-operative diagnosis of an epidermoid cyst. The 4th ventricle is actually not that uncommon a location for this entity, but far less common than the cerebellopontine angle. </p><p><strong>Histology</strong></p><p>MICROSCOPIC DESCRIPTION: The sections show the lining and contents of an epidermal cyst. The lining is composed of squamous epithelium with a discernible granular layer. The contents comprise laminated keratin. No mesenchymal or appendageal components are identified. There is no evidence of tumour.</p><p>DIAGNOSIS: Epidermoid cyst</p>
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