Ultrastructure of CIC-DUX4 sarcoma: the first pathological report.

We examined two cytogenetically confirmed CDS cases. We found that, compared to typical ES, CDS presented heterogeneity: in cell density, from tightly packed to loosely unconnected areas; in cell shape, from polygonal to pleomorphic with small processes; and in nuclear shape including round, oval, polygonal, elongated, invaginated, or wrinkled formations. However, abundant glycogen in the cytoplasm and rare cell adhesion apparatus between cells are major similarities between CDS and typical ES. Neuroendocrine granules, which are seen in rare ES cases, could not be identified in these two CDS cases. Although cytogenetic differences can validate a definite diagnosis, ultrastructural features could also provide important information about the differences between CDS and ES.
PMID: 32148152 [PubMed - as supplied by publisher]

Source: Ultrastructural Pathology - March 8, 2020 Category: Pathology Authors: Tamada H, Kobayashi M, Sano K, Uehara T, Matsumoto Y, Tateishi A, Ohya M, Kito M, Aoki K, Kanno H Tags: Ultrastruct Pathol Source Type: research