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Fig. 3 | World Journal of Surgical Oncology

Fig. 3

From: Ground-glass nodule in a patient with echinoderm microtubule-associated protein-like 4-anaplastic lymphoma kinase (EML4-ALK)-positive lung cancer: a case report

Fig. 3

Histopathological observations. a Hematoxylin and eosin staining of the tumor. Mucus-producing high columnar epithelium formed an irregular tubular-like or acinar-like structure that replaced the alveolar epithelium. b ALK immunostaining of the tumor showed an immunohistochemical iScore of 3 (0 = no stained cells; 1 = 0–50 % stained tumor cells; 2 = 50–80 % stained tumor cells or >80 % stained tumor cells with marked variability of staining intensity; 3 = >80 % stained tumor cells without marked variability of staining intensity)

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