metroticket_hcc_survival: Metroticket Calculator for HCC Survival (Up-to-7 Criteria)

In cliot: Clinical Indices and Outcomes Tools

Metroticket Calculator for HCC Survival (Up-to-7 Criteria)

Description

Calculates the "Up-to-7" score and estimates 5-year overall survival for patients with Hepatocellular Carcinoma (HCC) considered for liver transplantation. This tool identifies patients exceeding the Milan criteria who may still achieve favorable outcomes. The "Up-to-7" criteria are met if the sum of the size of the largest tumor (in cm) and the number of tumors is <= 7, provided there is no microvascular invasion.

Usage

metroticket_hcc_survival(largest_nodule_size_mm, number_of_nodules,
                         vascular_invasion)

Arguments

largest_nodule_size_mm	Numeric. Diameter of the largest tumor nodule in millimeters.
number_of_nodules	Numeric. Total number of tumor nodules.
vascular_invasion	String. Presence of microvascular invasion. Options: "absent", "present", "unknown".

Value

A list containing:

Up_To_Seven_Score	The calculated score (Size in cm + Number).
Predicted_5_Year_Survival	Estimated survival percentage based on the Mazzaferro et al. (2009) derivation cohort.
Criteria_Status	Indicates if the patient meets the "Up-to-7" criteria.

References

Mazzaferro V, Llovet JM, Miceli R, et al. Predicting survival after liver transplantation in patients with hepatocellular carcinoma beyond the Milan criteria: a retrospective, exploratory analysis. Lancet Oncol. 2009;10(1):35-43. doi:10.1016/S1470-2045(08)70284-5

Examples

# Example 1: Meets Criteria
# 30mm (3cm) tumor, 3 nodules, No invasion
# Score = 3 + 3 = 6 (<= 7)
metroticket_hcc_survival(30, 3, "absent")

# Example 2: Exceeds Criteria
# 50mm (5cm) tumor, 3 nodules, No invasion
# Score = 5 + 3 = 8 (> 7)
metroticket_hcc_survival(50, 3, "absent")

# Example 3: High Risk
# 30mm tumor, 2 nodules, Vascular invasion present
metroticket_hcc_survival(30, 2, "present")

cliot documentation built on Dec. 1, 2025, 1:06 a.m.