Endoscopic Resection of a Pedunculated Brunner’s Gland Hamartoma of the Duodenum

Figure 5

Pathological images. Stromal cell proliferation and lobular arrangement of proliferated Brunner’s glands separated by fibromuscular septa are visible in the head of the polyp ((a), ×4; (b), ×20). In the stalk, multiple blood vessels and adipose tissues can be seen ((c), ×4; (d), ×10). Brunner’s glands are only partly visible in the stalk ((d), arrow). The cystic structure visible in the head of the polyp is lined with columnar cells ((e), ×4; (f), ×40). Based on the pathological features, a diagnosis of Brunner’s gland hamartoma was reached.

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