Methods of assessing tumor growth

1. A method of assessing tumor growth rate in a patient receiving treatment for a tumor, the method comprising:

a) determining the tumor volume of the tumor;

b) determining the natural log (log e ) of the tumor volume determined in step (a) to provide a patient volumetric tumor growth rate; and

c) comparing the patient volumetric growth rate to a threshold volumetric tumor growth rate, wherein: (i) when the patient volumetric tumor growth rate is lower than the threshold volumetric tumor growth rate indicates the tumor is slow growing or (ii) when the patient volumetric tumor growth rate is higher than threshold volumetric tumor growth rate indicates the tumor is fast growing.

2. A method of providing a treatment alteration recommendation for a patient receiving treatment for a tumor, the method comprising:

a) determining the tumor volume of the tumor at a first period of time;

b) determining the natural log (log e ) of the tumor volume determined in step (a) to provide a patient volumetric tumor growth rate at the first period of time;

c) determining the tumor volume of the tumor at a second period of time;

d) determining the natural log (log e ) of the tumor volume determined in step (c) to provide a patient volumetric tumor growth rate at the second period of time; and

e) comparing the patient volumetric tumor growth rates to a threshold volumetric tumor growth rate,

wherein when both patient volumetric tumor growth rates are higher than the threshold volumetric tumor growth rate indicates that the patient's treatment regimen should be altered.

3. A method of assessing the need for further prognosis tests for a patient receiving treatment for a tumor, the method comprising:

a) determining the tumor volume of the tumor at a first period of time;

b) determining the natural log (log e ) of the tumor volume determined in step (a) to provide a patient volumetric tumor growth rate at the first period of time;

c) determining the tumor volume of the tumor at a second period of time;

d) determining the natural log (log e ) of the tumor volume determined in step (c) to provide a patient volumetric tumor growth rate at the second period of time; and

e) comparing the patient volumetric tumor growth rates to a threshold volumetric tumor growth rate,

wherein when both patient volumetric tumor growth rates are lower than the threshold volumetric tumor growth rate indicates no need for additional prognostic tests.

4. The method of claim 2 , wherein the first period of time is after the tumor has reached nadir.

5. The method of claim 1 , wherein the tumor volume is determined by a radiographic method.

6. The method of claim 5 , where the radiographic method is a CT scan.

7. The method of claim 1 , wherein the tumor is a solid tumor.

8. The method of claim 7 , wherein the tumor is a lung tumor.

9. The method of claim 1 , wherein the patient is receiving a targeted therapy for the tumor.

10. The method of claim 9 , wherein the targeted therapy is based upon a tumor mutation.

11. The method of claim 10 , wherein the targeted therapy is a tyrosine kinase inhibitor.

12. The method of claim 3 , wherein the first period of time is after the tumor has reached nadir.