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Unusual "Dumbbell"-Shaped Hibernoma
Nikolaos Tsapralis1, Hien Pham1, Apostolos Vlachogiorgos1
1Department of Plastic and Reconstructive Surgery, The Christie NHS Foundation Trust, Manchester, United Kingdom.
Plastic and Reconstructive Surgery. Global Open
|July 20, 2019
Summary
Hibernoma, a rare benign tumor of brown fat, can mimic malignancy. Early diagnosis via imaging and biopsy is crucial for effective surgical resection of this soft tissue tumor.
Area of Science:
- Oncology
- Pathology
- Radiology
Background:
- Hibernoma is a rare benign soft tissue tumor originating from brown adipose tissue.
- First described in 1906 and named in 1914, few cases are documented in medical literature.
Observation:
- A 33-year-old female presented with a painful thigh mass.
- Magnetic resonance imaging revealed a dumbbell-shaped soft tissue tumor in the pelvis and thigh, extending through the obturator foramen and involving the hip joint.
- Initial clinical and imaging findings suggested liposarcoma.
Findings:
- Ultrasound-guided biopsy and subsequent surgical resection confirmed the diagnosis of hibernoma.
- This case highlights the potential for hibernoma to present with features mimicking malignant soft tissue tumors.
Implications:
- Accurate preoperative diagnosis is essential for optimal management of hibernoma.
- Magnetic resonance imaging and ultrasound-guided biopsy are critical tools for differentiating hibernoma from malignancy.
- Surgical resection remains the primary treatment modality for symptomatic hibernoma.