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Calculator: Solitary pulmonary nodule malignancy risk in adults (Brock University cancer prediction equation)


Calculator: Solitary pulmonary nodule malignancy risk in adults (Brock University cancer prediction equation)

 
Input
 
Age  
Sex Female (0.6011)

Male (0)
Family history of lung cancer (0.2961)
Emphysema (0.2953)
Nodule size  
Nodule type Nonsolid or ground-glass (-0.1276)

Partially solid (0.377)

Solid (0)
Nodule in upper lung (0.6581)
Nodule count  
Spiculation (0.7729)

 
Results
 
Important: Inputs must be complete to perform calculation.

 
 
Log odds  
Cancer probability  
 
Decimal precision  

 
 

 
Notes
  • This calculator estimates the probability that a lung nodule described above will be diagnosed as cancer within a 2- to 4-year follow-up period.

 
Equations used
 
Log_odds = (0.0287 * (Age - 62)) + Sex + Family_History_Lung_Ca + Emphysema - (5.3854 * ((Nodule_size/10)-0.5 - 1.58113883)) + Nodule_type + Nodule_Upper_Lung - (0.0824 * (Nodule_count - 4)) + Spiculation - 6.7892
Cancer_probability = 100 * (e(Log_odds) / (1 + e(Log_odds)))

 

 
Equation parameters, such as Sex, have two or more discrete values that may be used in the calculation. The numbers in the parentheses, eg, (0.6011), represent the values that will be used.
 

 
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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