[Undifferentiated XXXX in an adult: a case report].

@entity1 @entity3377 @entity39 @entity5 @entity409 @entity2277 @entity158 @entity2040 @entity6826 @entity99
Undifferentiated @entity409 is rare. It is usually observed in @entity1 and adolescents. We report one case of @entity409 arising in @entity1 without any antecedent. The only symptom was right scapular @entity158 . The liver scan showed a multicystic lesion suspicious for infectious origin or a @entity5 . Serologies for ecchinococcus, @entity2040 and @entity3377 were negative. The treatment was a right hepatectomy. On gross examination, the @entity5 was unencapsulated, multicystic and contained large areas of @entity39 admixed with gelatinous areas. Microscopically, there were epithelioid and @entity5 cells in a myxo  d stroma. Lipoblastic-like or rhabdomyoblastic-like, giant cells and PAS positive hyaline globules in the cell cytoplasm were present. The @entity5 cells expressed @entity2277 , cytokeratin ( @entity6826 ), alpha-1-antitrypsin and smooth muscle actin. This observation shows that @entity409 may develop in adult @entity1 and should be taken into consideration in any differential diagnosis of @entity99 .
