Large cell carcinoma
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Large cell carcinoma, microscopic appearance. This tumor is composed of large malignant cells without evidence of squamous or glandular differentiation. Mucin stains were negative. This tumor could be classified as a large cell carcinoma or as a poorly differentiated carcinoma, non-small cell type. If the mucin stain had been positive in this tumor, it would have been classified as a poorly differentiated adenocarcinoma (solid type).