Table I.

Weissferdt-Moran [9] TNM Staging system for Thymic carcinoma.

	DESCRIPTION
T1	Tumor limited to thymic gland
T2	Tumor invading visceral pleura, lung, pericardium, great vessels, chest wall or diaphragm
T3	Direct extra thoracic tumor extension, beyond thoracic inlet or diaphragm
N0	No lymph node metastasis
N1	Lymph node metastasis to intrathoracic lymph nodes
M0	No distant metastasis
M1	Distant metastasis (indirect tumor spread, including metastasis to extra thoracic lymph nodes)
Steage I	T1N0M0
Stage II	T2N0M0
Stage III	T3N0M0