Metastatic Squamous Cell Carcinoma Component from an Adenosquamous Carcinoma of the Lung with Identical Epidermal Growth Factor Receptor Mutations

<div>Radiologic and histologic features of brain metastasis. (a) Axial T2 weighted sequence demonstrates a large cystic mass in the left frontal lobe with surrounding edema, mass effect, and midline shift. (b) Axial postcontrasted T1 weighted sequence demonstrates an irregular cystic ring enhancing lesion with surrounding edema and mass effect. (c) Light microscopic examination shows squamous cell carcinoma (d) that is diffusely immunoreactive with keratin CK5/6.</div>

Case Reports in Pulmonology

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Figure 2: Metastatic Squamous Cell Carcinoma Component from an Adenosquamous Carcinoma of the Lung with Identical Epidermal Growth Factor Receptor Mutations 

Figure 2 | Metastatic Squamous Cell Carcinoma Component from an Adenosquamous Carcinoma of the Lung with Identical Epidermal Growth Factor Receptor Mutations 