Pan et al reported a nomogram for predicting liver metastases in a patient with a neuroendocrine carcinoma. The authors are from Fujian Medical University in China.
Patient selection: pancreatic neuroendocrine carcinoma
Parameters:
(1) tumor grade
(2) tumor T stage
(3) tumor N stage
(4) diameter of tumor in cm
(5) metastatic site other than liver
Parameter
Finding
Points
tumor grade
G1
0
G2
19.6
G3
60
T stage
T1
T2
24.1
T3
31.1
T4
68.5
unspecified
100
N stage
N0
N1
31.5
19.9
diameter
< 2 cm
2 to 4 cm
37.2
> 4 cm
74.2
48.2
other sites with metastases
no
yes
57.4
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 323
value of X =
= (0.02371 * (score)) - 3.928
probability of liver metastases =
= 1 / (1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.85.
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Specialty: Hematology Oncology
