Traumatic neuroma of remnant cystic duct mimicking duodenal subepithelial tumor: A case report

Figure 2 Histological findings of tumor and specimen. A: Microscopic view of a neuroma showing spindle cell proliferation arranged in short bundles and intervening cleft artifact (white arrows, hematoxylin and eosin staining; magnification x 200); B: Lesion tests positive for S100 protein; C: Macroscopic findings of resected duodenal wall (yellow arrow), lesion (orange arrow), and cystic duct (white arrow); D: Incised specimen showing a hard mass (blue arrow) with the cystic portion (orange arrow) adjacent to the duodenal wall (yellow arrow) and the cystic duct (white arrow).