BACKGROUND: Primary @entity99 is a very rare malignancy with a poor prognosis. While surgical resection has been validated as curative choice, most cases are diagnosed too late for resection. Nonetheless, treatment protocols have not been established and also there are very few reports on the clinical features and treatment outcomes. @entity1 AND METHODS: Among 11,939 @entity1 diagnosed with primary @entity99 from January 1985 to December 2007 at two centers, five @entity1 were diagnosed with primary @entity99 . We analyzed @entity1 ' demographics, @entity5 characteristics, treatment modality, and outcomes using imaging, serology, and pathology. RESULTS: All five @entity1 were diagnosed at advanced stage with distant metastases. The most common symptom was @entity490 . The levels of the @entity5 markers were within the normal range and serological tests were negative for @entity1956 and C viruses. Two of four @entity1 who received chemotherapy died <3 months after diagnosis, but the other two @entity1 survived >6 months. CONCLUSIONS: A combination of chemotherapy resulted in an improved outcome for two of four @entity1 , suggesting the potential usefulness of palliative chemotherapy to improve survival. This case study may aid in planning chemotherapy for @entity1 with advanced @entity99 .

Clinical features and treatment outcomes of advanced stage primary XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'PATIENTS'] @entity1956 :: ('MESH:D006509', 'Disease') :: ['hepatitis B'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity490 :: ('MESH:D015746', 'Disease') :: ['abdominal pain'] @entity99 :: ('MESH:D056486', 'Disease') :: ['hepatic tumors', 'hepatic angiosarcoma']
@entity99 :: (MESH:D056486,Disease) :: ['hepatic angiosarcoma']
