What is the best description for the word pathology?

Question

Quizplus · Accepted Answer

Pathology is the processes and effects of a disease.
The pathology of this tumor is that it grows rapidly and begins attacking the lymph nodes. 
The origin or cause of a disease is etiology.
No clear etiology of this disease currently exists. We have no idea how it started or where it came from.
Causing or able to cause disease is a description of pathogenic.
The bacteria Salmonella is an example of a pathogenic organism that is found in undercooked or mishandled food. It can cause vomiting and diarrhea.
The anticipated course or outcome is prognosis.
The doctor's prognosis for the patient is that he will regain the ability to walk again within a few weeks and to eventually be able to live a normal life.

What Is the Best Description for the Word Pathology