Hibernoma: report of two cases.

Area of Science:

• Surgical pathology
• Diagnostic imaging

Background:

• Hibernomas are uncommon benign adipose tumors.
• Differential diagnosis can be challenging due to overlapping imaging features.

Observation:

• Arteriographic findings in hibernomas can mimic malignant lesions.
• These tumors share imaging characteristics with lipomas, sarcomas, and hemangiomas.

Findings:

• Preoperative diagnosis of hibernoma malignancy is often unreliable based on imaging alone.
• Histological examination is crucial for definitive diagnosis.

Implications:

• Misdiagnosis can lead to unnecessary aggressive treatment or delayed appropriate management.
• Awareness of hibernoma's imaging pitfalls is essential for accurate preoperative assessment.