Recently Answered Questions on Gefitinib

My mother is having recurrent Plueral effusion due to malignancy of Left lung. She is EGFR positive and doctor has out her on Gefitinib/Iressa. How can we track if Iressa is effective or not? Which is better Gefitinib or Alotinib?

After radiation,targeted therapy started. Gefitinib. Feeding through tube. Liquid food only. Suffering from severe abdominal pain. Right side.

What will b d best drug among (AFATINIB / ERLOTINIB / GEFITINIB) for EGFR positive Exon 21 mutant NSCLC LUNG CANCER with previously given adjuvant therapy (Chemotherapy + radiation therapy) ?