Extraskeletal @entity2828 is a rare @entity5 . The most common sites of occurrence are on the trunk, extremities, and retroperitoneum. This type of @entity5 is well characterized by recurrent chromosomal translocation such as t (11;22) (q24;q12) ( @entity12726 / @entity21468 ) or t (21;22) (q22;q12) ( @entity12726 / @entity9493 ) and overexpression of @entity3778 / @entity3778 on @entity5 cell membrane. We describe the first reported case of an esophageal extraskeletal @entity2828 with confirmation from immunohistochemical and molecular diagnoses. A 56-year-old @entity1 developed a @entity5 located in the lower part of the esophagus. The @entity5 was composed of small-sized round cells showing prominent fibrillar cytoplasmic processes. Intracytoplasmic glycogen was detected in all the @entity5 cells. Immunoreactivity for @entity3778 / @entity3778 was positive on the membrane of all @entity5 cells. A reverse transcriptase-polymerase chain reaction followed by sequencing revealed an @entity12726 / @entity9493 chimeric transcript, which combined @entity12726 exon 10 with @entity9493 exon 6. The present report added a new entity of esophageal small round cell @entity5 .

Esophageal extraskeletal XXXX .

@entity1 :: ('9606', 'Species') :: ['man'] @entity2828 :: ('MESH:D012512', 'Disease') :: ["Ewing's sarcoma"] @entity5 :: ('MESH:D009369', 'Disease') :: ['polypoid tumor', 'tumor'] @entity3778 :: ('4267', 'Gene') :: ['MIC2', 'CD99'] @entity9493 :: ('2078', 'Gene') :: ['ERG'] @entity21468 :: ('2313', 'Gene') :: ['FLI1'] @entity12726 :: ('2130', 'Gene') :: ['EWSR1']
@entity2828 :: (MESH:D012512,Disease) :: ['Ewing's sarcoma']
