The calculator in question is the TNM Classification for Penile Cancer. TNM stands for Tumor, Node, Metastasis, a system used to classify the extent of cancer spread in the body. This specific classification is applicable to patients diagnosed with penile cancer.

The TNM Classification for Penile Cancer is a crucial tool for clinicians to stage penile cancer, guide treatment decisions, and predict prognosis. It takes into account the size and extent of the primary tumor (T), the involvement of nearby lymph nodes (N), and the presence of distant metastasis (M). 

This classification system is not applicable to patients with benign (non-cancerous) penile conditions or cancers that have originated from other parts of the body and spread to the penis (secondary or metastatic penile cancers). It is also not used for pediatric patients or for staging other types of cancers.

TNM classification for penile cancer

# Criteria
 ## Tumor classification
A. Tx: Primary tumor cannot be assessed
B. T0: No evidence of primary tumor
C. Tis: Penile carcinoma in situ (intraepithelial neoplasia)
D. Ta: Noninvasive localized squamous cell carcinoma
E. T1a. Tumor invasion (for glans: lamina propria; for foreskin: dermis, lamina propria, or dartos fascia; for shaft: connective tissue between epidermis and corpora regardless of location) without lymphovascular invasion or perineural invasion and is not high grade (grade 3 or sarcomatoid)
F. T1b: Tumor invasion (for glans: lamina propria; for foreskin: dermis, lamina propria, or dartos fascia; for shaft: connective tissue between epidermis and corpora regardless of location) with lymphovascular invasion and/or perineural invasion, or is high grade (grade 3 or sarcomatoid)
G. T2: Tumor invading into corpus spongiosum (either glans or ventral shaft) with or without urethral invasion
H. T3: Tumor invading into corpora cavernosum (including tunica albuginea) with or without urethral invasion
I. T4: Tumor invading into adjacent structures (scrotum, prostate, pubic bone)
## Lymph node classification
J. Nx: Regional lymph nodes cannot be assessed
K. N0: No regional lymph node metastasis
L. N1: <= 2 unilateral inguinal metastases, no extranodal extension
M. N2: >= 3 unilateral inguinal metastases or bilateral metastases
N. N3: Extranodal extension of lymph node metastases or pelvic lymph node metastases
## Metastasis classification
O. M0: No distant metastasis
P. M1: Distant metastasis present

# Conditions
- C and K and O
- D and K and O
- E and K and O
- (F or G) and K and O
- H and K and O
- (E or F or G or H) and L and O
- (E or F or G or H) and M and O
- (I and (K or L or M or N) and O) or ((E or F or G or H or I) and N and O) or ((E or F or G or H or I) and (K or L or M or N) and P)
- true