A Rare Cause of Duodenal Intussusception: The Pedunculated Brunner's gland hamartoma

Yi-Hua Wang¹Jing Zhou²Xiao-Shan Huang¹Xiao-Zhong Zheng¹Meng-Ying Gu¹Jia-Qi Duan¹Shu-Feng Fan¹Jian-Xia Xu^1*

• ¹The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
• ²Hangzhou Normal University Affiliated Hospital, Hangzhou, China

BACKGROUND: Brunner’s gland hamartomas (BGHs) are primarily benign and typically do not exhibit characteristic clinical symptoms. The discovery and diagnosis of duodenal BGHs may require imaging assistance. Dissemination of this case can help inform future diagnosis and effective treatment. CASE SUMMARY: Herein, we report a case of a 43-year-old male presenting with bloating. The computed tomography (CT) found a strip-like, mixed-density lesion with fat attenuation in the duodenal canal, and the proximal intestine was dilated. Contrast-enhanced abdominal CT revealed the lesion had mild to moderate enhancement with incomplete intussusception. The lesion was resected entirely with the endoscope. Postoperative pathology confirmed a BGH. CONCLUSION: CT findings exhibit specific characteristics that are valuable for visualizing these lesions or their secondary manifestations. An elongated intraluminal mass lesion with heterogeneous density and fat attenuation may indicate a pedunculated duodenal Brunner’s gland hamartoma.