9379
While the introduction of carmustine wafers ( Gliadel wafers ) into the tumor resection cavity has been shown to be a beneficial therapy for malignant glioma , it is recognized that clinically significant cerebral edema is a potential adverse effect .
 cerebral edema, carmustine; cerebral edema, Gliadel
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 cerebral edema, carmustine; cerebral edema, Gliadel