The anterior mediastinum: diseases

Area of Science:

• Radiology
• Thoracic Oncology
• Pathology

Background:

• Mediastinal tumors are frequently asymptomatic and detected incidentally on routine chest radiography.
• Anterior mediastinal masses constitute half of all mediastinal tumors, including neoplasms and nonneoplastic lesions.
• Common primary anterior mediastinal tumors include thymoma, teratoma, and lymphoma.

Purpose of the Study:

• To review the role of diagnostic imaging in evaluating anterior mediastinal masses.
• To understand the pathology, clinical presentation, imaging characteristics, and diagnosis of major mediastinal tumor types.

Main Methods:

• Spiral computed tomography (sCT) of the chest with iodinated contrast material is the primary imaging modality.
• Evaluation involves analyzing tumor location and appearance on sCT to guide further diagnostic and treatment strategies.
• Review of literature on the pathology, clinical presentation, imaging, and diagnosis of anterior mediastinal masses.

Main Results:

• sCT findings are instrumental in planning diagnostic and treatment strategies for mediastinal tumors.
• Nonneoplastic conditions such as thymic cysts, lymphangioma, and intrathoracic goiter can mimic neoplastic lesions.
• The work-up of mediastinal masses requires understanding of various tumor types and their characteristics.

Conclusions:

• Diagnostic imaging, particularly sCT, plays a crucial role in the management of anterior mediastinal masses.
• Surgical resection is common for primary mediastinal masses and cysts.
• Radiological and clinical features guide the need for biopsy, oncologic consultation, chemotherapy, or radiotherapy.