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Related Experiment Videos

Hibernoma: 18F FDG PET/CT imaging.

Rathan M Subramaniam1, Amy C Clayton, Dimitrios Karantanis

  • 1Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA. Subramaniam.rathan@mayo.edu

Journal of Thoracic Oncology : Official Publication of the International Association for the Study of Lung Cancer
|June 5, 2007
PubMed
Summary
This summary is machine-generated.

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A chest wall lesion initially suspected as melanoma metastasis was accurately diagnosed as a hibernoma. This benign tumor, characterized by fat content, was confirmed via biopsy after PET/CT imaging.

Area of Science:

  • Oncology
  • Radiology
  • Pathology

Background:

  • Malignant melanoma diagnosis requires accurate staging and metastasis detection.
  • Positron Emission Tomography/Computed Tomography (PET/CT) is crucial for identifying metabolically active lesions.

Observation:

  • A 40-year-old woman with melanoma presented with an intensely FDG-avid lesion in the chest wall.
  • The lesion, located in the right postero-lateral chest wall involving the latissimus dorsi, predominantly contained fat.
  • Initial imaging raised suspicion for melanoma metastasis.

Findings:

  • Ultrasound-guided fine needle aspirate and core biopsy were performed.
  • Histopathological analysis confirmed the lesion as a hibernoma, a benign fatty tumor.
  • Metastasis of malignant melanoma was definitively excluded.

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Implications:

  • This case highlights the importance of histopathological confirmation for definitive diagnosis, even with highly suggestive imaging findings.
  • Hibernomas can mimic metastatic disease on PET/CT due to their metabolic activity.
  • Accurate differentiation is vital for appropriate patient management and avoiding unnecessary oncological treatment.