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Endodermal sinus tumour of stomach--a case report
Ronica Baruah1, Manoj Saha, K C Barua
1Ekopath Centre, Gauhati, Assam. ronicanagpal@yahoo.com
Indian Journal of Pathology & Microbiology
|September 22, 2007
Summary
This case report details a rare endodermal sinus tumor in a young child's stomach. The tumor showed specific histological patterns and elevated alpha-fetoprotein levels, aiding diagnosis.
Area of Science:
- Pediatric Oncology
- Gastrointestinal Pathology
Background:
- Endodermal sinus tumors (ESTs), also known as yolk sac tumors, are rare germ cell neoplasms.
- Gastric involvement by ESTs is exceptionally uncommon, particularly in pediatric patients.
Observation:
- A case report of a 1.5-year-old male child presenting with a gastric endodermal sinus tumor.
- The tumor infiltrated the full thickness of the gastric fundus and partially involved the body.
- Histopathological examination revealed characteristic reticular and endodermal sinus patterns.
Findings:
- Elevated serum alpha-fetoprotein (AFP) levels were detected in the patient.
- Immunohistochemical analysis confirmed AFP presence within the tumor tissue, supporting the diagnosis.
Implications:
- This case highlights the importance of considering rare gastric malignancies in pediatric patients with unexplained abdominal masses.
- Elevated AFP serves as a crucial diagnostic and potential monitoring biomarker for gastric endodermal sinus tumors.
- Further research into the pathogenesis and optimal management of pediatric gastric germ cell tumors is warranted.

