case_images: PMC5702189_01
case_images: Microscopic appearance: the tumor is composed of compact nests and sheets of epithelial cells surrounded by a prominent component of mature lymphocytes and plasma cells. Hematoxylin and eosin stain; original magnification x100
case_images: 12907_2017_61_Fig1_HTML.jpg
case_images: PMC5702189_01_12907_2017_61_Fig1_HTML.jpg
case_images: Fig1
case_images: Laryngeal biopsy was performed and revealed, on microscopic examination, a malignant tumor composed of solid sheets disposed in lymphoid background (Fig. 1).
case_images: Microscopic appearance: tumor cells are undifferentiated, large, with round, vesicular nuclei, containing a prominent nucleolus, and with an abundant, ill defined cytoplasm. Hematoxylin and eosin stain; original magnification x400
case_images: 12907_2017_61_Fig2_HTML.jpg
case_images: PMC5702189_01_12907_2017_61_Fig2_HTML.jpg
case_images: Fig2
case_images: The cytoplasm was poorly limited (Fig. 2).
case_images: positive immunohistochemical staining for cytokeratin 5/6
case_images: 12907_2017_61_Fig3_HTML.jpg
case_images: PMC5702189_01_12907_2017_61_Fig3_HTML.jpg
case_images: Fig3
case_images: Automated immunohistochemistry showed positivity for Cytokeratin 5/6 (D5/16B4) (Fig. 3).