Treatment with a combination chemotherapeutic regimen consisting of cyclophosphamide , vincristine , and dacarbazine for malignant paraganglioma with hepatic metastasis is reported .
Combination chemotherapy for malignant paraganglioma.  Treatment with a combination chemotherapeutic regimen consisting of cyclophosphamide , vincristine , and dacarbazine for malignant paraganglioma with hepatic metastasis is reported . A 51-year-old male presented with tumors in the retroperitoneal space and liver. The patient was diagnosed as having paraganglioma based on elevated levels of serum neuron-specific enolase, urinary catecholamine and vanillylmandelic acid, and on histological findings of the liver specimen. The patient was treated with this combination chemotherapy in repeated 21-day cycles. Temporary improvement in laboratory findings and a 20% reduction in the size of the hepatic masses were observed without severe adverse effects.
### Instruction:
            Given the context about compound efficacy for the given treatment mentioned within the input, mentioned the compounds 
            that can co-occur for the mentioned treatment

            ### Input:
            Combination chemotherapy for malignant paraganglioma.  Treatment with a combination chemotherapeutic regimen consisting of cyclophosphamide , vincristine , and dacarbazine for malignant paraganglioma with hepatic metastasis is reported . A 51-year-old male presented with tumors in the retroperitoneal space and liver. The patient was diagnosed as having paraganglioma based on elevated levels of serum neuron-specific enolase, urinary catecholamine and vanillylmandelic acid, and on histological findings of the liver specimen. The patient was treated with this combination chemotherapy in repeated 21-day cycles. Temporary improvement in laboratory findings and a 20% reduction in the size of the hepatic masses were observed without severe adverse effects.

            ### Response:
            cyclophosphamide, vincristine, dacarbazine
            