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We describe a case of subcutaneous metastasis along the needle track after percutaneous ethanol injection (PEI) for treatment of hepatocellular carcinoma.
 a case: Subject; subcutaneous metastasis: Effect; percutaneous ethanol injection (PEI): Treatment; ethanol: Treatment.Drug; injection: Treatment.Route; hepatocellular carcinoma: Treatment.Disorder
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 a case: Subject; subcutaneous metastasis: Effect; percutaneous ethanol injection (PEI): Treatment; ethanol: Treatment.Drug; injection: Treatment.Route; hepatocellular carcinoma: Treatment.Disorder