Sentence: Because the mass invaded the pancreas and superior mesenteric vein as well as duodenum and the disease was disseminated to liver and peritoneum , she received palliative chemotherapy using vincristine , doxorubicin , cyclophosphamide , ifosfamide , and etoposide .
Drug combination annotation:
[{'class': 'POS', 'spans': ['vincristine', 'doxorubicin', 'cyclophosphamide', 'ifosfamide', 'etoposide'], 'is_context_needed': False}]