Abstract：
Heterotopic pancreas is the congenital presence of pancreatic tissue outside its normal location in the absence of vascular and anatomical connection with the main pancreas. To our knowledge, no case of heterotopic pancreas cyst in the middle ear has been reported to date. In this study, we report the first case of a 6-year-old boy with ectopic pancreas in the area of middle ear. The patient underwent canal wall down mastoidectomy with tympanoplasty. It was finally diagnosed as ectopic pancreas (left middle ear). During the 6-year follow-up, no evidence of recurrence or residual disease in the middle ear cleft or mastoid was found. Heterotopic pancreas in the middle ear is an uncommon condition and may present with otorrhea or aural fullness. Diagnosis is usually straightforward on the histologic evaluation of resection specimen, complemented with immun ohist ochem istry . Total excision with such lesion is preferred to avoid some complications. Regular follow-up is necessary due to the potential risk of recurrence and malignant transformation.
摘要：
异位胰腺是指胰腺组织在其正常位置之外的先天性存在，没有与主胰腺的血管和解剖连接。据我们所知,迄今为止，尚无中耳异位胰腺囊肿的报道。在这项研究中,我们报告了第一例6岁男孩中耳区域胰腺异位。该患者接受了鼓室成形术下乳突切除术。最终诊断为异位胰腺（左中耳）。在为期6年的随访中，未发现中耳裂或乳突复发或残留疾病的证据。中耳异位胰腺是一种罕见的疾病，可能存在耳漏或耳胀。诊断通常取决于切除标本的组织学评估，辅之以immunohistochem司理。为了避免某些并发症，优选对此类病变进行完全切除。由于复发和恶变的潜在风险，定期随访是必要的。
