8909
CONCLUSION : Tamoxifen may cause malignant transformation of endometriosis through atypical endometriosis even in the postmenopausal state .
 malignant transformation of endometriosis, Tamoxifen
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:
 malignant transformation of endometriosis, Tamoxifen