SEER Inquiry System - Question 20051025 Details

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Produced: 05/13/2026 5:12 PM

Question 20051025

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Inquiry Details

References:

WHO Class Thymus Tumors, 2-3. 1999

Question:

Reportability/Behavior--Thymus: Are "lymphocyte predominant thymoma with microscopic capsule invasion" and "Polygonal epithelial cell thymoma with invasion of the lung and pericardial fat" reportable?

Discussion:

Answer:

Please see SINQ 20110038 for the most recent information on reporting thymoma.

History:

1. Not reportable (benign).

2. Reportable (malignant).

According to the WHO Classification of Thymus Tumours, encapsulated thymomas lacking implants, lymph node metastases or distant metastases are benign. Thymic tumors that infiltrate into, but not through, the capsule belong in the benign category. A thymoma that invades adjacent structures is malignant.

Cancer Site Category:

N/A

Data Item Category:

Behavior

Other Category:

Reportability

Year:

2005