Cystic Brunner’s gland hamartoma in the duodenum: A case report

Figure 3 Histologic findings of the specimen. A: Cut surface of the gross specimen showing a multiloculated cystic appearance filled with mucin-like material; B: Aggregated glands (arrows) are lined with cuboidal to columnar cells with abundant pale cytoplasm and a basally-located oval nucleus, resembling a normal Brunner’s gland in histopathologic findings of cystic Brunner’s gland hamartoma (HE, × 200) while the large cystic dilated gland showing the same lining (arrowheads) as a normal Brunner’s gland; C: Cystic Brunner’s gland hamartoma showing a well-demarcated nodular lesion, composed of a lobular collection of tubuloalveolar glands separated by fibrous septa, beneath the muscularis mucosa, in the low power field (× 12.5), while some glands showing cystic dilatation.