Tis:	Carcinoma in situ
TX:	Primary tumor cannot be assessed
T0:	No evidence of primary tumor
T1:	Tumor has not spread beyond testicles, blood vessels, lymphatic vessels, or tunica vaginalis
T2:	Tumor has spread to blood vessels, lymphatic vessels, or tunica vaginalis
T3:	Tumor invades the spermatic cord
T4:	Tumor invades the scrotum
NX:	Regional lymph nodes cannot be assessed
N0:	No metastasis to regional lymph nodes
N1:	Lymph node mass 2 cm or less across; five or fewer nodes positive
N2:	Lymph node mass between 3 and 5 cm across or metastasis to five or more lymph nodes, none more than 5 cm across
N3:	Metastasis to at least one lymph node with the mass more than 5 cm across
MX:	Distant metastasis cannot be assessed
M0:	No distant metastasis (i.e., no spread to nonregional lymph nodes or other organs such as the lungs)
M1:	Distant metastasis is present
M1a:	Metastasis to distant lymph nodes or lung
M1b:	Metastasis to organs such as the liver, brain, or bones
SX:	Marker studies not performed
S0:	Normal LDH, β-hCG, and alpha-fetoprotein levels
S1:	LDH level < 1.5 times the upper limit of normal; β-hCG level < 5,000 mIU per mL (5,000 IU per L); alpha- fetoprotein level < 1,000 ng per mL (1,000 mcg per L)
S2:	LDH level 1.5 to 10 times the upper limit of normal; β-hCG level of 5,000 to 50,000 mIU per mL (5,000 to 50,000 IU per L); alpha-fetoprotein level of 1,000 to 10,000 ng per mL (1,000 to 10,000 mcg per L)
S3:	LDH level > 10 times the upper limit of normal; β-hCG level > 50,000 mIU per mL (50,000 IU per L); alpha- fetoprotein level > 10,000 ng per mL (10,000 mcg per L)