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Computed tomography (CT) scan of the left lung. (a) CT on admission, showing a 20-mm lung tumor in the left lower lobe. (b) The lung tumor had shrunk remarkably after 4 weeks of afatinib treatment. (c) CT scan showed the re-growing lung tumor in the left upper lobe when disease progression was confirmed after afatinib treatment. (d) The lung tumor had shrunk remarkably after 4 cycles of cisplatin and irinotecan treatment.
