case_images: PMC10858994_01
case_images: Hematoxylin-eosin, 10x. Microscopic examination revealed a multicystic submucosal lesion, consisting of multiple cystic spaces.. (single arrow: stratified squamous epithelium lining the true vocal cord, star: lamina propria, arrowhead: seromucinous glands in the lamina propria, double arrows: oncocytic papillary projections)
case_images: cureus-0016-00000052147-i01.jpg
case_images: PMC10858994_01_cureus-0016-00000052147-i01.jpg
case_images: FIG1
case_images: Microscopic examination revealed a submucosal lesion, measuring 1 cm in greatest diameter, consisting of multiple cystic spaces (Figure 1) lined by epithelial columnar cells with abundant eosinophilic, granular cytoplasm, with inconspicuous nucleoli and without nuclear atypia, called oncocytic cells, with intraluminal papillary projections (Figure 2).
case_images: Hematoxylin-eosin, 20x. The cystic spaces were lined by uniform oncocytic epithelial cells with intraluminal papillary projections. The oncocytic cells are epithelial cells with abundant eosinophilic, granular cytoplasm, and inconspicuous nucleoli, and without nuclear atypia.. (The arrows indicate the papillary projections consisting of oncocytic epithelial cells)
case_images: cureus-0016-00000052147-i02.jpg
case_images: PMC10858994_01_cureus-0016-00000052147-i02.jpg
case_images: FIG2
case_images: Microscopic examination revealed a submucosal lesion, measuring 1 cm in greatest diameter, consisting of multiple cystic spaces (Figure 1) lined by epithelial columnar cells with abundant eosinophilic, granular cytoplasm, with inconspicuous nucleoli and without nuclear atypia, called oncocytic cells, with intraluminal papillary projections (Figure 2).
case_images: Hematoxylin-eosin, 40X. On higher magnification, neither cellular atypia nor mitotic activity was observed.
case_images: cureus-0016-00000052147-i03.jpg
case_images: PMC10858994_01_cureus-0016-00000052147-i03.jpg
case_images: FIG3
case_images: Hematoxylin-eosin, 60x. The epithelial cells lining cystic spaces had uniform, normochromatic nuclei, with abundant granular oncocytic cytoplasm.
case_images: cureus-0016-00000052147-i04.jpg
case_images: PMC10858994_01_cureus-0016-00000052147-i04.jpg
case_images: FIG4