case_images: PMC9149464_01
case_images: Extensive black spickled pigmetation on gastric mucosa.
case_images: crg-0016-0264-g01.jpg
case_images: PMC9149464_01_crg-0016-0264-g01.jpg
case_images: F1
case_images: An esophagogastroduodenoscopy showed a hiatus hernia with Hill's classification grade 4, a 7-mm sessile polyp with a Paris classification of 0-Is which was removed by snaring, extensive gray to black speckles on the posterior wall of the gastric corpus, as well as the duodenum indicating possible gastric and duodenal pseudomelanosis, respectively (Fig. 1).
case_images: Microphotograph showing gastric mucosa showing brownish black pigment deposition within macrophages in the lamina propria. (H&E stain, x200).
case_images: crg-0016-0264-g02.jpg
case_images: PMC9149464_01_crg-0016-0264-g02.jpg
case_images: F2
case_images: The lamina propria had brownish-black pigment-laden macrophages (Fig. 2) and Perl's Prussian blue stain tested positive, confirming iron deposition (Fig. 3).