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Endodermal sinus tumor of the omentum: case report.
Maria Luisa Geminiani1, Achille Panetta, Vida Pajetta
1Modulo Operativo di Oncologia, Ospedale di Bentivoglio, Azienda USL di Bologna, via Marconi 35, 40010 Bentivoglio, Bologna, Italy. achille.panetta@ausl.bologna.it
Tumori
|February 7, 2006
Summary
This case study details a rare primary endodermal sinus tumor of the omentum in a 46-year-old woman. Successful surgical resection and chemotherapy led to a complete recovery, indicated by normalized tumor markers.
Area of Science:
- Gynecologic Oncology
- Surgical Pathology
- Medical Oncology
Background:
- Endodermal sinus tumors (ESTs), also known as yolk sac tumors, are rare germ cell neoplasms.
- Primary omental EST is exceptionally rare, posing diagnostic and therapeutic challenges.
Observation:
- A 46-year-old woman presented with right-sided abdominal pain and a CT-detected abdominal mass.
- Laparotomy revealed a large omental tumor extensively involving adjacent organs, necessitating complete surgical resection.
- Histopathological and immunohistochemical analyses confirmed the diagnosis of primary omental endodermal sinus tumor.
Findings:
- Elevated serum alpha-fetoprotein (AFP) levels pre-operatively decreased significantly after tumor resection.
- Serum beta-human chorionic gonadotropin levels remained within the normal range.
- The patient completed six cycles of cisplatin, etoposide, and bleomycin chemotherapy.
Implications:
- This case highlights the importance of considering rare diagnoses in the differential for abdominal masses.
- Complete surgical resection combined with platinum-based chemotherapy is an effective treatment strategy for primary omental EST.
- Monitoring AFP levels is crucial for assessing treatment response and detecting recurrence in EST patients.