Fig. 4

Haematoxylin and Eosin (H&E) micrographs. The small bowel mucosa showed generally intact villous architecute, with Brunner’s glands observed in the laminia propria (black arrow). Smooth muscle bundles were haphazardly arranged in the underlying stroma, while no well-developed muscularis propria were seen (a, original magnification ×20). At the cauterized edge, there were lobules of pancreatic tissue, comprising benign acini and islets of Langerhans (b, ×100). A larger focus of pancreatic tissue was present in the fibrotic tissue (c, ×20). All three components were observed, including acini, islets of Langerhans (black arrow) and ducts (hollow arrow) (d, ×200). An intralobular nerve bundle was focally seen, adjacent to small ducts (inset, ×200)