Fig. 4
From: Targeted sequencing may facilitate differential diagnostics of pulmonary tumours: a case series
Case 4. Synchronous lung adenocarcinomas in upper lobes with similar morphology but different genetic profiles. a-c The KRAS mutated tumour in the right upper lobe. a HE, x4 objective, b HE, (c) TTF-1. d-f The EGFR mutated tumour in the left upper lobe. d HE, x4 objective, (e) HE, (e) TTF-1 (note the weaker TTF-1 may be due to suboptimal fixation). g-i Recurrence of the tumour in the left upper lobe. g HE, x4 objective, (h) HE, (i) TTF-1. All images x10 objective unless otherwise stated