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Primary endodermal sinus tumor of the omentum
Gynecologic Oncology
|March 4, 1999
Summary
This report details the first known case of omental endodermal sinus tumor (EST), a rare cancer. The patient achieved remission with surgery and chemotherapy, highlighting effective treatment for this unusual extragonadal neoplasm.
Area of Science:
- Gynecologic Oncology
- Pathology
- Medical Oncology
Background:
- Endodermal sinus tumor (EST) typically originates in the gonads (testis or ovary).
- Extragonadal ESTs are recognized in various locations, including the mediastinum, vagina, and brain.
- Primary EST of the omentum is exceptionally rare, with limited documented cases.
Observation:
- A 45-year-old woman presented with abdominal distension.
- She underwent total abdominal hysterectomy with bilateral salpingo-oophorectomy and infracolic omentectomy.
- Histopathological examination confirmed the tumor as EST, positive for alpha-fetoprotein and cytokeratin.
Findings:
- The patient received four cycles of BEP (bleomycin, etoposide, cisplatin) chemotherapy post-surgery.
- She has remained disease-free for 10 months following treatment.
- Microscopic analysis revealed characteristic EST patterns.
Implications:
- This case represents the first documented instance of primary omental EST.
- Surgical debulking combined with BEP chemotherapy appears effective for extragonadal EST.
- Further research into the histogenesis of omental EST is warranted.