Masaoka staging system of thymoma

Last revised by Yuranga Weerakkody ◉ on 15 May 2022

Citation, DOI, disclosures and article data

Citation:

Weerakkody Y, Knipe H, Goel A, et al. Masaoka staging system of thymoma. Reference article, Radiopaedia.org (Accessed on 31 May 2023) https://doi.org/10.53347/rID-7812

DOI:

https://doi.org/10.53347/rID-7812

Permalink:

https://radiopaedia.org/articles/7812

rID:

7812

Article created:

12 Dec 2009, Yuranga Weerakkody ◉

Disclosures:

At the time the article was created Yuranga Weerakkody had no recorded disclosures.

View Yuranga Weerakkody's current disclosures

Last revised:

15 May 2022, Yuranga Weerakkody ◉

Disclosures:

At the time the article was last revised Yuranga Weerakkody had no financial relationships to ineligible companies to disclose.

View Yuranga Weerakkody's current disclosures

Revisions:

17 times, by 7 contributors - see full revision history and disclosures

Systems:

Chest, Oncology

Sections:

Staging

Tags:

stub

Synonyms:

Thymoma staging
Masaoka-Koga staging system
Masaoka-Koga staging system of thymic tumours

The Masaoka staging system is commonly adopted for thymomas ^1-3, and is the most important determinant of survival following surgical resection ⁴:

stage I: intact thymic capsule
stage II: capsular invasion into adjacent mediastinal fat or pleura
stage III: macroscopic invasion into adjacent organs, vessels
stage IV
- IVa: dissemination in thoracic cavity (i.e. pleural or pericardial implants)
- IVb: distant metastases