Primary Uterine Angiosarcoma Presenting With Omental Metastasis, Lymph Node Involvement, and Demonstrating a Null p53...

Area of Science:

• Gynecologic Oncology
• Pathology
• Genetics

Background:

• Primary uterine angiosarcoma is an exceedingly rare and aggressive mesenchymal malignancy.
• Fewer than 30 cases have been reported in the English literature.
• Diagnosis can be challenging due to nonspecific high-grade morphology and focal vascular features.

Purpose of the Study:

• To present a case of primary uterine angiosarcoma in a 51-year-old woman.
• To highlight the diagnostic challenges and molecular underpinnings of this rare tumor.
• To emphasize the utility of immunohistochemistry and molecular analysis in diagnosis.

Main Methods:

• Magnetic resonance imaging (MRI) for initial assessment.
• Initial biopsy and subsequent surgical resection for histopathological analysis.
• Immunohistochemistry (IHC) panel including ERG and CD31.
• Whole exome and whole transcriptome sequencing for molecular profiling.

Main Results:

• A large, necrotic uterine mass was identified.
• Initial biopsy suggested a high-grade sarcoma; IHC confirmed primary uterine angiosarcoma.
• Pathogenic variants in CDKN2A and TP53 were detected via sequencing.
• Despite aggressive treatment, the patient experienced rapid disease progression and succumbed to the disease within 5 months.

Conclusions:

• Primary uterine angiosarcoma is a rare, aggressive malignancy with diagnostic challenges.
• A comprehensive approach combining imaging, histology, IHC, and molecular genetics is crucial for accurate diagnosis.
• Early and accurate diagnosis is critical for management, though prognosis remains poor.