case_images: PMC9536094_01
case_images: Endoscopic appearance of MCC with gastric metastasis.
case_images: 10.1177_11795476221112382-fig1.jpg
case_images: PMC9536094_01_10.1177_11795476221112382-fig1.jpg
case_images: fig1-11795476221112382
case_images: Gastroenterology was consulted and performed an upper endoscopy which revealed a malignant appearing 3-cm ulcerated gastric nodule with stigmata of recent bleeding (Figure 1).
case_images: Chromogranin stain, 600x magnification of gastric mucosal biopsy.
case_images: 10.1177_11795476221112382-fig2.jpg
case_images: PMC9536094_01_10.1177_11795476221112382-fig2.jpg
case_images: fig2-11795476221112382
case_images: Tumor cells were positive for pancytokeratin, NSE, chromogranin, synaptophysin, and CK20 (classic perinuclear dot-like pattern) (Figures 2, 3, and 4).
case_images: Synaptophysin stain, 600x magnification of gastric mucosal biopsy.
case_images: 10.1177_11795476221112382-fig3.jpg
case_images: PMC9536094_01_10.1177_11795476221112382-fig3.jpg
case_images: fig3-11795476221112382
case_images: Tumor cells were positive for pancytokeratin, NSE, chromogranin, synaptophysin, and CK20 (classic perinuclear dot-like pattern) (Figures 2, 3, and 4).
case_images: CK20 stain, 600x magnification, Gastric mucosal biopsy depicting tumor cell positivity in the characteristic paranuclear dot-like pattern.
case_images: 10.1177_11795476221112382-fig4.jpg
case_images: PMC9536094_01_10.1177_11795476221112382-fig4.jpg
case_images: fig4-11795476221112382
case_images: Tumor cells were positive for pancytokeratin, NSE, chromogranin, synaptophysin, and CK20 (classic perinuclear dot-like pattern) (Figures 2, 3, and 4).
case_images: Hematoxylin and Eosin stain, 400x magnification of gastric wedge resection depicting gastric mucosa with tumor cells in the lamina propria.
case_images: 10.1177_11795476221112382-fig5.jpg
case_images: PMC9536094_01_10.1177_11795476221112382-fig5.jpg
case_images: fig5-11795476221112382
case_images: These morphologic and immunohistochemical features along with the patient's history of MCC were consistent with a diagnosis of metastatic MCC (Figure 5).