Ependymoblastoma

Ependymoblastoma is a rare type of primitive neuroectodermal tumor (PNET) that usually occurs in young children under the age of 2 and is histologically distinguished by the production of ependymoblastic rosettes. It is associated with an aggressive course and a poor prognosis.

Medulloepithelioma

A primitive neuroectodermal tumor that originates from the cells of the embryonic medullary canal.


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PMID (PMCID)
26252622
 OTHER
Embryonal tumor with multilayered rosettes of the fourth ventricle: case report.
Edmonson CA, Weaver KJ, Kresak J, Pincus DW.
J Neurosurg Pediatr. 2015;16(5):579-583.
Although the WHO currently recognizes 3 distinct histopathological entities-embryonal tumor with abundant neuropil and true rosettes (ETANTR), ependymoblastoma, and medulloepithelioma-recent studies indicate that these tumors have a common molecular profile and clinical course and that they are now classified as a single entity.
26299744
 MALE
[Embryonal Tumors with Multilayer Rosettes--Rare Central Nervous System Tumors in Infants].
Pleko M, Husakova K, Kaiserova E, Tichy M, Zamenik J.
Klin Onkol. 2015;28(4):288-92.
This group is composed of medulloepithelioma, ependymoblastoma and embryonal tumor with abundant neuropil and true rosettes.
24558755
 MALE Infant
[Are the medulloepithelioma, ependymoblastoma and embryonal tumor with multilayered rosettes the same entity?].
Ryzhova MV, Kushel' IuV, Zheludkova OG, Shishkina LV, Panina TN, Melikian AG, Zemlianskii MIu, Lemeneva NV.
Zh Vopr Neirokhir Im N N Burdenko. 2013;77(6):51-5.
[Are the medulloepithelioma, ependymoblastoma and embryonal tumor with multilayered rosettes the same entity?
24558755
 MALE Infant
[Are the medulloepithelioma, ependymoblastoma and embryonal tumor with multilayered rosettes the same entity?].
Ryzhova MV, Kushel' IuV, Zheludkova OG, Shishkina LV, Panina TN, Melikian AG, Zemlianskii MIu, Lemeneva NV.
Zh Vopr Neirokhir Im N N Burdenko. 2013;77(6):51-5.
Presence of these both aberrations suggesting that medulloepithelioma, ependymoblastoma and embryonal tumor with multilayered rosettes are the same entity.
2197242
 FEMALE Middle Aged
Malignant mixed mullerian tumor of the ovary with prominent neuroectodermal differentiation (teratoid carcinosarcoma).
Ehrmann RL, Weidner N, Welch WR, Gleiberman I.
Int J Gynecol Pathol. 1990;9(3):272-82.
The neuroectodermal components were prominent, resembling ependymoblastoma, medulloepithelioma, ganglioneuroblastoma, glioblastoma multiforme, and pigmented neuroectodermal tumor.