PMC3919878_01
Computed tomography radiographs showing changes in pulmonary metastasis in response to erlotinib therapy. Axial and coronal views of a (A) baseline scan prior to starting erlotinib, (B) partial response after one month of erlotinib treatment and (C) stable disease after three months.
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After 3 cycles, the lesions became stable (Fig. 1), but the patient began to feel nauseous and fatigued from fourth-degree bone marrow depression, preventing tolerance of further treatment.