Craniopharyngioma (classification): Difference between revisions

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**"Wet keratin nodules" are a characteristic histological feature.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**"Wet keratin nodules" are a characteristic histological feature.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**Calcification is usually present: 90%.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**Calcification is usually present: 90%.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**More locally aggressive.
**More locally aggressive.<ref>Classification of Craniopharyngioma. Cancer gov. http://www.cancer.gov/types/brain/hp/child-cranio-treatment-pdq#link/_40_toc</ref>


*'''[[Papillary]]'''
*'''[[Papillary]]'''
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**''Cysts'' do form, but these are less of a feature, and the tumor is more ''solid''.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**''Cysts'' do form, but these are less of a feature, and the tumor is more ''solid''.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**Calcification is uncommon or even rare.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**Calcification is uncommon or even rare.<ref>Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma</ref>
**Less locally aggressive.
**Less locally aggressive.<ref>Classification of Craniopharyngioma. Cancer gov. http://www.cancer.gov/types/brain/hp/child-cranio-treatment-pdq#link/_40_toc</ref>


==References==
==References==

Revision as of 18:27, 22 August 2015

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Overview

Classification

Craniopharyngiomas are believed to derive from Rathke cleft rather than squamous cell rests along the craniopharyngeal duct as was previously thought. This histological appearances of the two subtypes are different, accounting for the different imaging features.[1]

  • Adamantinomatous
    • This type is seen predominantly in children. It consists of reticular epithelial cells which have appearances reminiscent of the enamel pulp of developing teeth.[2]
    • There may be single or multiple cysts filled with thick oily fluid high in protein, blood products, and/or cholesterol, creating the so called "machinery oil".[3]
    • "Wet keratin nodules" are a characteristic histological feature.[4]
    • Calcification is usually present: 90%.[5]
    • More locally aggressive.[6]
  • Papillary
    • The papillary subtype is seen almost exclusively in adults and is formed of masses of metaplastic squamous cells.[7]
    • "Wet keratin" is absent.[8]
    • Cysts do form, but these are less of a feature, and the tumor is more solid.[9]
    • Calcification is uncommon or even rare.[10]
    • Less locally aggressive.[11]

References

  1. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  2. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  3. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  4. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  5. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  6. Classification of Craniopharyngioma. Cancer gov. http://www.cancer.gov/types/brain/hp/child-cranio-treatment-pdq#link/_40_toc
  7. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  8. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  9. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  10. Histologic classification of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma
  11. Classification of Craniopharyngioma. Cancer gov. http://www.cancer.gov/types/brain/hp/child-cranio-treatment-pdq#link/_40_toc


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