Clinicopathological Features of Thymoma with Ring Calcification: Case Reports

Area of Science:

• Thoracic surgery
• Pathology
• Oncology

Background:

• Thymomas are rare primary tumors of the thymus.
• Ring calcifications within or around thymomas are exceptionally uncommon findings.
• Understanding the characteristics of these rare tumors is crucial for diagnosis and management.

Observation:

• This study presents three new cases of thymomas with ring calcifications, reviewing a total of 10 cases from literature.
• The median age of affected patients was 53 years, with Myasthenia Gravis occurring in 40% of cases.
• Tumors were predominantly World Health Organization (WHO) Type B or had a Type B component, with calcifications found internally, externally, or associated with thymic cysts.

Findings:

• Ring calcifications can be internal or external to the thymoma, or associated with calcified thymic cysts.
• The World Health Organization (WHO) classification revealed a distribution of 20% Stage I, 60% Stage II, and 20% Stage III.
• Pathological examination is essential for definitive diagnosis, distinguishing thymomas from other anterior mediastinal tumors.

Implications:

• The presence of ring calcifications in thymomas warrants careful surgical consideration due to the potential for invasive disease.
• Accurate pathological diagnosis is paramount for appropriate treatment strategies.
• Further research into the etiology and specific characteristics of calcified thymomas may improve patient outcomes.