Dumbbell-Mimicked Mediastinal Angiomatosis

Area of Science:

• Vascular Lesions
• Thoracic Surgery
• Neurosurgery

Background:

• Angiomatosis is a nonneoplastic proliferative vascular lesion typically found in soft tissues.
• Mediastinal involvement is uncommon, and intraspinal invasion is exceptionally rare.

Observation:

• A 63-year-old male with prostate adenocarcinoma presented with a mediastinal mass and spinal invasion.
• Imaging revealed a posterior mediastinal tumor with T4 intraspinal extension, resembling a dumbbell tumor.
• The patient had a left pleural effusion and a left paraspinal mass.

Findings:

• The tumor was diagnosed as angiomatosis after complete surgical excision.
• Surgical approach involved laminectomy (T3-5) and thoracoscopic removal.
• Histopathological confirmation of angiomatosis was obtained.

Implications:

• This case highlights the importance of considering angiomatosis in the differential diagnosis of mediastinal masses with spinal involvement.
• Prompt surgical intervention is necessary to decompress the spinal cord and prevent neurological deficits.
• Dumbbell-mimicked tumors require thorough evaluation and definitive treatment.