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Primary gastric chorioadenocarcinoma: a needle in a haystack
Aditi Shastri1, Naval G Daver, Teresa G Hayes
1Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.
Rare Tumors
|July 20, 2011
Summary
Primary gastric chorioadenocarcinoma (PGC) is a rare cancer often mistaken for gastric adenocarcinoma. Elevated beta human chorionic gonadotrophin (Beta HCG) is a key indicator, aiding diagnosis and monitoring treatment response.
Area of Science:
- Gastroenterology
- Oncology
- Pathology
Background:
- Primary gastric chorioadenocarcinoma (PGC) is an extremely rare gastric malignancy.
- It is frequently misdiagnosed as common gastric adenocarcinoma.
- Elevated serum beta human chorionic gonadotrophin (Beta HCG) is a hallmark of PGC.
Observation:
- A 44-year-old male presented with abdominal pain, weight loss, and elevated Beta HCG (23717.5 MIU/ML).
- CT scans revealed a gastric mass with liver metastases.
- Biopsy confirmed poorly differentiated adenocarcinoma with Beta HCG staining.
Findings:
- The patient was diagnosed with metastatic PGC and received chemotherapy (Bleomycin, Etoposide, Cisplatinum).
- Despite initial Beta HCG normalization, imaging showed disease progression.
- The patient developed pancytopenia, DIC, and expired 12 months post-presentation.
Implications:
- PGC exhibits characteristics of both adenocarcinoma and choriocarcinoma.
- Serum Beta HCG levels may be crucial for assessing treatment efficacy and detecting recurrence.
- Early diagnosis, curative resection, chemotherapy, and absence of metastases are vital for improved survival in PGC.
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