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Diffuse hepatoid adenocarcinoma in the peritoneal cavity

Hiroshi Kitamura1, Kazuki Ikeda, Toyohiko Honda

  • 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.

Internal Medicine (Tokyo, Japan)
|November 2, 2006
PubMed

Insights

Hepatoid adenocarcinoma (HAC), a rare gastrointestinal tumor, can present primarily in the peritoneum. This case highlights a unique diffuse HAC presentation with high alpha-fetoprotein (AFP) levels.

Area of Science:

  • Oncology
  • Gastroenterology
  • Pathology

Background:

  • Hepatoid adenocarcinoma (HAC) is a rare neoplasm typically found in the gastrointestinal tract.
  • HAC is characterized by histological features resembling hepatocellular carcinoma and often associated with elevated alpha-fetoprotein (AFP).

Observation:

  • A 68-year-old male presented with severe ascites and markedly elevated serum and ascitic alpha-fetoprotein (AFP) levels.
  • Computed tomography (CT) revealed multiple nodular lesions exclusively within the peritoneal cavity.
  • Laparoscopic and histological examinations confirmed a diagnosis of diffuse hepatoid adenocarcinoma originating in the peritoneum.

Findings:

  • This represents the first documented case of diffuse hepatoid adenocarcinoma (HAC) arising primarily within the peritoneum.
  • The patient's clinical presentation included severe ascites and significantly elevated alpha-fetoprotein (AFP).

Implications:

  • This case expands the known spectrum of hepatoid adenocarcinoma (HAC) presentation, emphasizing the peritoneum as a potential primary site.
  • Further research is warranted to understand the pathogenesis and optimal management strategies for peritoneal hepatoid adenocarcinoma (HAC).

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