Table 2. TNM classification of penile carcinomas of the Union Internationale Contre le Cancer (UICC) (32).

Primary tumor (T)	Tis	Carcinoma in situ
	Ta	Non-invasive localized verrucous carcinoma
	T1	Tumor invades subepithelial connective tissue
	T1a	Without lymphovascular invasion and well differentiated
	T1b	With lymphovascular invasion or poorly differentiated
	T2	Tumor invades corpus spongiosum with or without invasion of the urethra
	T3	Tumor invades corpus cavernosum without or with invasion of the urethra
	T4	Tumor invades other adjacent structures
Regional lymph nodes (N) (clinical)	N0	No palpable or visibly enlarged inguinal lymph nodes
	N1	Palpable mobile unilateral lymph node
	N2	Palpable mobile multiple or bilateral inguinal lymph nodes
	N3	Fixed inguinal nodal mass or pelvic lymphadenopathy, unilateral or bilateral
Regional lymph nodes (pN) (pathological)	pN0	No regional lymph node metastasis
	pN1	Metastasis in up to two regional lymph nodes
	pN2	Metastases in three or more unilateral lymph nodes or bilateral inguinal lymph nodes
	pN3	Metastasis in pelvic lymph nodes, unilateral or bilateral, or extranodal extension of any regional lymph node metastasis
Distant metastasis (M)	M0	No distant metastasis
	M1	Distant metastasis