Fig. 3From: Achievement of pathological complete response with osimertinib for EGFR-mutated lung adenocarcinomaPathological finding before osimertinib treatment. Pathological sections (hematoxylin and eosin staining [right]) obtained with transbronchial lung biopsy of the right lower lung tumor provided the diagnosis of poorly differentiated adenocarcinoma of the lung. Strong staining of thyroid transcription factor-1 was observed in the nucleus of tumor cells (left)Back to article page