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Virilization due to a metastasizing granulosa cell tumor
Summary
A rare virilizing granulosa cell tumor in a postmenopausal woman metastasized to multiple organs. The tumor predominantly used the delta 4-pathway for testosterone biosynthesis, leading to hormonal imbalances.
Area of Science:
- Endocrinology
- Oncology
- Pathology
Background:
- Granulosa cell tumors (GCTs) are rare ovarian neoplasms.
- Virilizing GCTs are exceptionally uncommon, particularly in postmenopausal women.
- Metastatic GCTs can present diagnostic challenges.
Observation:
- A postmenopausal woman presented with a virilizing GCT.
- Metastases were identified in the liver, urinary bladder, and spinal column.
- Bladder metastases were initially misdiagnosed as paraganglioma due to lipid content.
Findings:
- Elevated plasma testosterone and 17-hydroxyprogesterone levels were observed.
- Normal plasma 17-hydroxypregnenolone and dehydroepiandrosterone levels indicated a predominant delta 4-pathway of testosterone biosynthesis.
- Suppressed gonadotropin levels, unresponsive to gonadotropin-releasing hormone, were likely due to elevated testosterone.
Implications:
- This case highlights the diagnostic challenges of metastatic GCTs.
- Understanding the specific steroidogenic pathways in GCTs is crucial for diagnosis and management.
- Further research into virilizing GCTs can improve patient outcomes.