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Fig. 2 | Journal of Medical Case Reports

Fig. 2

From: Concordant clear cell “mesonephric” carcinoma of the bladder and lung adenocarcinoma with clear cell features – multiple primaries versus metastatic neoplasms: a case report

Fig. 2

Lung adenocarcinoma with clear cell features. a Hematoxylin and eosin stain demonstrating characteristic glandular architecture of the neoplastic cells with clearing of the cytoplasm (arrows). b Cytokeratin 7 staining diffusely positive in neoplastic cells (arrow). c Napsin A-positive staining in neoplastic cells (arrow). d Thyroid transcription factor 1 staining is positive in neoplastic cells (arrow). e Cytokeratin 20 staining is negative in neoplastic cells. f Cancer antigen 125 staining is negative in neoplastic cells. g Mucin and periodic acid-Schiff with diastase staining are positive in neoplastic cells (both extracellular [arrow] and intracellular [arrowheads]). AMACR α-Methylacyl-coenzyme A racemase, CA-125 Cancer antigen 125, CEA Carcinoembryonic antigen, CK Cytokeratin, H&E Hematoxylin and eosin, P53 Protein 53, PAS-D Periodic acid-Schiff with diastase stain, TTF-1 Thyroid transcription factor 1

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Journal of Medical Case Reports

ISSN: 1752-1947