[Hamartoma of Brunner's glands. Report of two cases]

Two cases of duodenal hamartoma of the Brunner's glands are reported in a 41-year-old woman and a 61 year-old man. These polypoid lesions measured more than 4 cm and presented with haemorrhages. These forms are infrequent. Because of their atypical and sometimes severe clinical symptoms, and their endoscopic appearance, a diagnosis of malignancy could be done. Their pathological features demonstrate that these benign lesions have a dysembryoplastic pattern and can be called hamartomas.