Hypermetabolic lesion in the prevascular mediastinum - always a thymoma/lymphoma?

Area of Science:

• Pathology
• Radiology
• Thoracic Surgery

Background:

• Cholesterol granuloma is a foreign-body giant cell reaction.
• Typically associated with chronic inflammation in the middle ear, sinuses, or mastoid.
• Cholesterol crystal deposition triggers the inflammatory response.

Observation:

• A rare case of cholesterol granuloma in the prevascular mediastinum.
• The patient was a symptomatic 57-year-old male.
• Imaging and clinical presentation suggested the diagnosis.

Findings:

• Histopathological confirmation of cholesterol granuloma.
• Demonstration of cholesterol crystals and giant cells.
• The lesion's location in the prevascular mediastinum was confirmed.

Implications:

• Highlights the importance of considering cholesterol granuloma in mediastinal masses.
• May necessitate advanced imaging and biopsy for diagnosis.
• Understanding rare presentations aids in differential diagnosis and patient management.