Difference between revisions of "Craniopharyngioma"

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m (→‎Adamantinomatous: tweak ... don't usually access date for pubmed-- as pubmed hopefully will be around in the future)
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*"Wet" keratin - nests of whorled keratin.
*"Wet" keratin - nests of whorled keratin.
*Calcifications (non-psammomatous).
*Calcifications (non-psammomatous).
Often contain mutations in CTNNB1, encoding β-catenin<ref>{{Cite journal  | last1 = Preda | first1 = V. | last2 = Larkin | first2 = SJ. | last3 = Karavitaki | first3 = N. | last4 = Ansorge | first4 = O. | last5 = Grossman | first5 = AB. | title = The Wnt Signalling Cascade and the Adherens Junction Complex in Craniopharyngioma Tumorigenesis. | journal = Endocr Pathol | volume =  | issue =  | pages =  | month = Oct | year = 2014 | doi = 10.1007/s12022-014-9341-8 | PMID = 25355426 }}
Often contain mutations in CTNNB1, encoding β-catenin<ref name=pmid25355426>{{Cite journal  | last1 = Preda | first1 = V. | last2 = Larkin | first2 = SJ. | last3 = Karavitaki | first3 = N. | last4 = Ansorge | first4 = O. | last5 = Grossman | first5 = AB. | title = The Wnt Signalling Cascade and the Adherens Junction Complex in Craniopharyngioma Tumorigenesis. | journal = Endocr Pathol | volume =  | issue =  | pages =  | month = Oct | year = 2014 | doi = 10.1007/s12022-014-9341-8 | PMID = 25355426 }}</ref> resulting in intranuclear β-catenin immunohistochemical positivity.
{{Cite web  | last =  | first =  | title = http://www.ncbi.nlm.nih.gov/pubmed/25355426 | url = http://www.ncbi.nlm.nih.gov/pubmed/25355426 | publisher =  | date =  | accessdate = 15 November 2014 }}</ref> resulting in intranuclear β-catenin immunohistochemical positivity.
====Images====  
====Images====  
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Revision as of 00:24, 16 November 2014

Craniopharyngioma is a benign neuropathology tumour.

It is subdivided into papillary craniopharyngioma and adamantinomatous craniopharyngioma.

General

  • Develop from remains of Rathke's pouch or squamous epithelial cell rests.[1]

Comes in two flavours:[1]

  • Adamantinomatous type.
    • Adults and children.
  • Squamous papillary type.
    • Adults individuals.[2]
    • Usually solid.

Gross

  • Cystic mass filled with motor oil-like fluid.[3]
    • May not be seen in the papillary variant of craniopharyngioma.

Radiology:[1]

  • Calcified - adamantinomatous type only.
  • Solid & cystic.

Microscopic

Adamantinomatous

Features (adamantinomatous):[4]

  • Well-circumscribed (or pseudoinvasive border).
  • Multicystic.
  • Small-to-medium sized cells with moderate amount of basophilic cytoplasm.
  • Bland nuclei (with occ. small nucleoli).
  • "Wet" keratin - nests of whorled keratin.
  • Calcifications (non-psammomatous).

Often contain mutations in CTNNB1, encoding β-catenin[5] resulting in intranuclear β-catenin immunohistochemical positivity.

Images

  • Adamantinomatous craniopharyngioma - very low mag. (WC/Nephron)

  • Adamantinomatous craniopharyngioma - intermed. mag. (WC/Nephron)

  • Adamantinomatous craniopharyngioma - very high mag. (WC/Nephron)

Papillary

Features (papillary):[6]

  • Non-keratinized squamous epithelium (without nuclear atypia).
  • Fibrovascular cores (required for papillary).

Notes:

  • +/-Cilia (rare).
  • +/-Goblet cell-like formations (rare).

Image

  • Papillary craniopharyngioma - intermed. mag. (WC/Nephron)

  • Papillary craniopharyngioma - very high mag. (WC/Nephron)

www:

See also

References

  1. ↑ 1.0 1.1 1.2 Garnett, MR.; Puget, S.; Grill, J.; Sainte-Rose, C. (2007). "Craniopharyngioma.". Orphanet J Rare Dis 2: 18. doi:10.1186/1750-1172-2-18. PMID 17425791.
  2. ↑ Giangaspero, F.; Burger, PC.; Osborne, DR.; Stein, RB. (Jan 1984). "Suprasellar papillary squamous epithelioma ("papillary craniopharyngioma").". Am J Surg Pathol 8 (1): 57-64. PMID 6696166.
  3. ↑ Fernandez-Miranda, JC.; Gardner, PA.; Snyderman, CH.; Devaney, KO.; Strojan, P.; Suárez, C.; Genden, EM.; Rinaldo, A. et al. (Jul 2012). "Craniopharyngioma: a pathologic, clinical, and surgical review.". Head Neck 34 (7): 1036-44. doi:10.1002/hed.21771. PMID 21584897.
  4. ↑ Tadrous, Paul.J. Diagnostic Criteria Handbook in Histopathology: A Surgical Pathology Vade Mecum (1st ed.). Wiley. pp. 184. ISBN 978-0470519035.
  5. ↑ Preda, V.; Larkin, SJ.; Karavitaki, N.; Ansorge, O.; Grossman, AB. (Oct 2014). "The Wnt Signalling Cascade and the Adherens Junction Complex in Craniopharyngioma Tumorigenesis.". Endocr Pathol. doi:10.1007/s12022-014-9341-8. PMID 25355426.
  6. ↑ Perry, Arie; Brat, Daniel J. (2010). Practical Surgical Neuropathology: A Diagnostic Approach: A Volume in the Pattern Recognition series (1st ed.). Churchill Livingstone. pp. 406. ISBN 978-0443069826.
  7. ↑ URL: http://library.med.utah.edu/WebPath/jpeg4/ENDO115.jpg. Accessed on: 6 December 2010.
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