case_images: PMC10481807_01
case_images: (a) Cytologic smear of lung nodule on rapid on-site assessment (Diff Quik, x200). (b) Discrete and clusters of cells with pale matrix (Diff Quik, x400). (c) Papanicolaou stain showing monotonous small round to oval cells x400. (d) Cell block showing sheets of small cells with hyperchromatic nuclei (H and E x200).
case_images: Cytojournal-20-15-g001.jpg
case_images: PMC10481807_01_Cytojournal-20-15-g001.jpg
case_images: F1
case_images: The smears were moderately cellular comprising very uniform population of small, round to oval cells with very scant cytoplasm disposed as single cells and occasional clusters associated with occasional metachromatic matrix [Figure 1a and b]. There were no mitoses, necrosis, or hemorrhage [Figure 1c and d].
case_images: (a) Immunohistochemical stain for CD10 x200. (b) Immunohistochemical stain for WT1 x200.
case_images: Cytojournal-20-15-g002.jpg
case_images: PMC10481807_01_Cytojournal-20-15-g002.jpg
case_images: F2
case_images: The tumor is typically positive for CD10, ER, PR, WT1, AR, and IFITM1. The neuroendocrine and smooth muscle markers were negative in our case [Figure 2].