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Introduction <p>Intrahepatic biliary neuroendocrine neoplasms (NENs) are rare neoplasms originating from neuroendocrine cells in the intrahepatic bile ducts. Patients often present without hormone-related symptoms but are admitted due to jaundice or abdominal pain.</p> Presentation of case <p>This case report describes a 57-year-old female patient who experienced intermittent upper abdominal pain for one month prior to admission. A computed tomography (CT) scan at a local hospital revealed an intrahepatic space-occupying lesion. Magnetic Resonance Cholangiopancreatography (MRCP) at our hospital identified a mass at the root of the left hepatic duct, accompanied by secondary dilation of the left intrahepatic bile ducts. Liver function tests and tumor markers were within normal ranges, and no jaundice or metastatic signs were observed. The patient underwent robot-assisted left hemihepatectomy and cholecystectomy, with a smooth postoperative recovery. Pathological examination confirmed a neuroendocrine tumor (NET G2), measuring 2.2×2×1.6 cm. Postoperative positron emission tomography / computedtomography (PET/CT) scans detected no tumors elsewhere, confirming the intrahepatic bile duct as the primary site.</p> Conclusion <p>Biliary NENs are exceedingly rare and challenging to diagnose preoperatively. Surgical resection remains the most effective treatment for achieving cure or prolonging survival.</p>

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Primary Intrahepatic Biliary Neuroendocrine Neoplasms: A Case Report and Literature Review

  • 期刊论文

  • 发表日期：

    2025年8月28日

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  • Zhengfu Chen,
  • Lifu Hu,
  • Zixian Guo,
  • Jingxiang Chu,
  • Tao He,
  • Changyong E,
  • Tao Jiang

摘要

Introduction

Intrahepatic biliary neuroendocrine neoplasms (NENs) are rare neoplasms originating from neuroendocrine cells in the intrahepatic bile ducts. Patients often present without hormone-related symptoms but are admitted due to jaundice or abdominal pain.

Presentation of case

This case report describes a 57-year-old female patient who experienced intermittent upper abdominal pain for one month prior to admission. A computed tomography (CT) scan at a local hospital revealed an intrahepatic space-occupying lesion. Magnetic Resonance Cholangiopancreatography (MRCP) at our hospital identified a mass at the root of the left hepatic duct, accompanied by secondary dilation of the left intrahepatic bile ducts. Liver function tests and tumor markers were within normal ranges, and no jaundice or metastatic signs were observed. The patient underwent robot-assisted left hemihepatectomy and cholecystectomy, with a smooth postoperative recovery. Pathological examination confirmed a neuroendocrine tumor (NET G2), measuring 2.2×2×1.6 cm. Postoperative positron emission tomography / computedtomography (PET/CT) scans detected no tumors elsewhere, confirming the intrahepatic bile duct as the primary site.

Conclusion

Biliary NENs are exceedingly rare and challenging to diagnose preoperatively. Surgical resection remains the most effective treatment for achieving cure or prolonging survival.