The calculator in question is the TNM Classification for Upper Urinary Tract Urothelial Cell Carcinoma. TNM stands for Tumor, Node, Metastasis, and it is a globally recognized standard for classifying the extent of spread of cancer. 

This specific TNM classification applies to patients diagnosed with upper urinary tract urothelial cell carcinoma, a type of cancer that originates in the urothelial cells lining the upper urinary tract, which includes the renal pelvis and the ureters.

The clinical utility of this calculator is to stage the cancer, which is crucial for determining the appropriate treatment strategy and for predicting patient prognosis. The TNM classification takes into account the size and extent of the primary tumor (T), whether the cancer has spread to nearby lymph nodes (N), and whether it has metastasized, or spread to other parts of the body (M).

There are no specific exclusion criteria for the use of the TNM classification. However, it should be noted that this system is not used for all types of cancer, and its application requires a thorough clinical and often pathological evaluation of the patient.

TNM classification for upper urinary tract urothelial cell carcinoma

# Criteria
 ## Tumor classification
A. Tx: Primary tumor cannot be assessed
B. T0: No evidence of primary tumor
C. Ta: Non-invasive papillary carcinoma
D. Tis: Carcinoma in situ
E. T1: Tumor invading subepithelial connective tissue
F. T2: Tumor invading muscularis propria
G. T3: Tumor invading beyond muscularis into peripelvic fat or renal parenchyma (for renal pelvis) or periureteric fat (for ureter)
H. T4: Tumour invading adjacent organs or through the kidney into perinephric fat
## 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 <= 2 cm in the greatest dimension
L. N2: Metastasis in a single lymph node > 2 cm or multiple lymph nodes
## Distant metastasis
M. M0: No distant metastasis
N. M1: Distant metastasis present

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