scholarly journals DICER1-associated metastatic abdominopelvic primitive neuroectodermal tumor with an EWSR1 rearrangement in a 16-yr-old female

2020 ◽  
Vol 6 (5) ◽  
pp. a005603
Author(s):  
Alessia Pancaldi ◽  
Lei Peng ◽  
Daniel S. Rhee ◽  
Emily Dunn ◽  
Jessica A. Forcucci ◽  
...  
Keyword(s):  
Primitive Neuroectodermal Tumor ◽  
Neuroectodermal Tumor ◽  
Ewsr1 Rearrangement

Membranous alterations in the cytoplasm and nucleus in a primitive neuroectodermal tumor of the brain

1978 ◽  
Vol 36 (2) ◽  
pp. 628-629
Author(s):  
C. N. Sun ◽  
C. Araoz ◽  
H. J. White
Keyword(s):  
Nuclear Envelope ◽  
Tumor Cells ◽  
Osmium Tetroxide ◽  
Primitive Neuroectodermal Tumor ◽  
Uranyl Acetate ◽  
Neuroectodermal Tumor ◽  
Annulate Lamellae ◽  
Lead Citrate ◽  
Thin Sections ◽  
The Brain

The ultrastructure of a cerebral primitive neuroectodermal tumor has been reported previously. In the present case, we will present some unusual previously unreported membranous structures and alterations in the cytoplasm and nucleus of the tumor cells.Specimens were cut into small pieces about 1 mm3 and immediately fixed in 4% glutaraldehyde in phosphate buffer for two hours, then post-fixed in 1% buffered osmium tetroxide for one hour. After dehydration, tissues were embedded in Epon 812. Thin sections were stained with uranyl acetate and lead citrate.In the cytoplasm of the tumor cells, we found paired cisternae (Fig. 1) and annulate lamellae (Fig. 2) noting that the annulate lamellae were sometimes associated with the outer nuclear envelope (Fig. 3). These membranous structures have been reported in other tumor cells. In our case, mitochondrial to nuclear envelope fusions were often noted (Fig. 4). Although this phenomenon was reported in an oncocytoma, their frequency in the present study is quite striking.

Peripheral Primitive Neuroectodermal Tumor After Radiotherapy

2003 ◽  
Vol 413 ◽  
pp. 255-260
Author(s):  
Juan L. Cebri??n ◽  
Aitor Ibarzabal ◽  
Rodrigo Garcia-Crespo ◽  
Fernando Marco ◽  
Luis Ortega ◽  
...  
Keyword(s):  
Primitive Neuroectodermal Tumor ◽  
Neuroectodermal Tumor ◽  
Peripheral Primitive Neuroectodermal Tumor

Peripheral primitive neuroectodermal tumor of the stomach in a 14-year-old boy

2004 ◽  
Vol 16 (12) ◽  
pp. 1391-1400 ◽  
Author(s):  
Ralph Czekalla ◽  
Martin Fuchs ◽  
Angela St??lzle ◽  
Andreas Nerlich ◽  
Christopher Poremba ◽  
...  
Keyword(s):  
Primitive Neuroectodermal Tumor ◽  
Neuroectodermal Tumor ◽  
Peripheral Primitive Neuroectodermal Tumor
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