Fig. 1From: Pathological cytomorphologic features and the percentage of ALK FISH-positive cells predict pulmonary adenocarcinoma prognosis: a prospective cohort studyCytomorphologic of lung adenocarcinomas harboring ALK rearrangements. a ALK-rearranged lung adenocarcinoma (× 200). b ALK-rearranged lung adenocarcinoma with signet ring cells (red arrows indicate signet ring cells) (× 400). c ALK-rearranged lung adenocarcinoma with extracellular mucin (× 100). d ALK-rearranged lung adenocarcinoma with cribriform pattern (× 100)Back to article page