A @entity6196 ( @entity6196 ) is very rare and the prognosis of this @entity5 is poor. A 32-year-old @entity1 complaining of @entity1282 and @entity615 was admitted to our hospital for the posterior mediastinal @entity5 . The @entity5 originated from the muscle layer of esophagus and en bloc resection of the @entity5 combined with the affected part of esophagus was performed. Histopathological diagnosis of the resected @entity5 was @entity6196 . She received adjuvant chemotherapy. Eight months after the surgery, recurrent @entity5 in the right mediastinum and the retrooperitoneal space was resected completely. But after the second surgery, dissemination occurred recurrently. These recurrent @entity5 revealed high sensitivity for radio-therapy. However, she died of rapid recurrence 22 months after the first surgery. In Japan, our case is the second case of @entity6196 in the posterior mediastinum and the first case of @entity6196 arising from the muscle layer of esophagus.

[An operative case of XXXX in the posterior mediastinum].

@entity1 :: ('9606', 'Species') :: ['woman'] @entity6196 :: ('MESH:D018242', 'Disease') :: ['primitive neuroectodermal tumor', 'PNET'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'tumors'] @entity615 :: ('MESH:D001416', 'Disease') :: ['back pain'] @entity1282 :: ('MESH:D003680', 'Disease') :: ['dysphagia']
@entity6196 :: (MESH:D018242,Disease) :: ['primitive neuroectodermal tumor']
