The calculator in question is the TNM (Tumor, Node, Metastasis) Classification for Urothelial Carcinoma of the Prostate. This classification system is used specifically for patients diagnosed with urothelial carcinoma of the prostate, a type of cancer that originates in the urothelium, the tissue lining the prostate.

The TNM Classification is a globally recognized standard for staging different types of cancers. It provides a systematic and consistent method to evaluate the extent of the cancer's spread. The 'T' in TNM refers to the size and extent of the main tumor, 'N' refers to the number of nearby lymph nodes that have cancer, and 'M' refers to whether the cancer has metastasized or spread to other parts of the body.

The clinical utility of this calculator is to help clinicians determine the stage of the patient's cancer, which is crucial for prognosis and treatment planning. It can guide decisions about surgery, radiation therapy, chemotherapy, and other treatment modalities.

There are no specific exclusion criteria for the use of the TNM Classification for Urothelial Carcinoma of the Prostate. However, it is not applicable to other types of prostate cancer or to urothelial carcinoma located in other parts of

TNM classification for urothelial carcinoma of the prostate

# Criteria
 ## Tumor classification
A. Tx: Primary tumor cannot be assessed
B. T0: No evidence of primary tumor
C. Tis pu: Carcinoma in situ, involvement of prostatic urethra
D. Tis pd: Carcinoma in situ, involvement of prostatic ducts
E. T1: Tumor invading subepithelial connective tissue (for tumors involving prostatic urethra only)
F. T2: Tumor invading prostatic stroma, corpus spongiosum, or periurethral muscle
G. T3: Tumor invading corpus cavernosum, beyond prostatic capsule, or bladder neck (extraprostatic extension)
H. T4: Tumor invading other adjacent organs (invasion of the bladder or rectum)
## Lymph node classification
I. Nx: Regional lymph nodes cannot be assessed
J. N0: No regional lymph node metastasis
K. N1: Metastasis in a single lymph node
L. N2: Metastasis in multiple lymph nodes
## Metastasis classification
M. M0: No distant metastasis
N. M1: Distant metastasis present

# Conditions
- (C or D) and J and M
- E and J and M
- F and J and M
- (G and J and M) or ((E or F or G) and K and M)
- (H and (J or K) and M) or ((A or B or C or D or E or F or G or H) and L and M) or ((A or B or C or D or E or F or G or H) and (I or J or K or L) and N)
- true