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Related Experiment Videos

CEA producing primary hepatic carcinoid.

Soo Ryang Kim1, Susumu Imoto, Yoko Maekawa

  • 1Department of Gastroenterology, Kobe Asahi Hospital, 3-5-25 Bouoji-cho, Nagata-ku, 53-0801, Kobe, Japan

Hepatology Research : the Official Journal of the Japan Society of Hepatology
|April 4, 2002
PubMed
Summary

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A rare primary hepatic carcinoid tumor was identified in a woman, characterized by neuroendocrine markers and CEA production. Surgical removal led to normalization of tumor markers, suggesting successful treatment.

Area of Science:

  • Hepatology
  • Oncology
  • Endocrinology

Background:

  • Primary hepatic carcinoid tumors are rare and challenging to diagnose.
  • Neuroendocrine markers and tumor markers like CEA, NSE, and 5HIAA can aid in diagnosis.

Purpose of the Study:

  • To report a case of primary hepatic carcinoid tumor.
  • To investigate the histopathological and ultrastructural features of the tumor.
  • To evaluate the clinical course and treatment outcome.

Main Methods:

  • Imaging studies (CT/MRI) to characterize the hepatic tumor.
  • Histopathological examination with immunohistochemistry for neuroendocrine markers and cytokeratins.
  • Ultrastructural analysis of tumor cells.
  • Monitoring of serum tumor markers (CEA, NSE, 5HIAA) before and after surgery.

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Main Results:

  • A large, hypervascular hepatic tumor with neuroendocrine features was identified.
  • Tumor cells expressed neuroendocrine markers (NSE, chromogranin A, synaptophysin) and CEA, but lacked hepatocyte/bile duct cytokeratins.
  • Ultrastructural analysis revealed electron-dense core granules.
  • Post-hepatectomy, serum CEA, NSE, and 5HIAA normalized and remained stable for 19 months.

Conclusions:

  • Primary hepatic carcinoid tumor is a tenable diagnosis based on clinical, imaging, and pathological findings.
  • The tumor may originate from hepatic stem cells with aberrant differentiation.
  • Surgical resection is an effective treatment, leading to long-term remission.