Hi George and welcome.
It appears you have crohn's disease located in the ascending colon (first part of the large intestin). Clinical symptoms can vary greatly from a patient to another one. What is most important is to monitor disease with exams just like you are doing with your doctor.
The pathology report mentioning ascending colitis is the one from December 2015 or April 2016?
If you still have disease activity with a pathology report mentioning active colitis,, it is obvious you doctor will propose to you some kind of long term (maintenance) treatment. It will most likely be an immuno-supressant (Purinethol ,Imuran, methotrexate) or a Biologic (Remicade, Humira, etc) or a combo of both.
If your last pathology report is fully clear (no disease activity) you dr may want to give some time for observation before putting you on some further medication or propose a mild medication of 5-ASA compound, depending on his protocols and in discussion with you. Doctors have different approaches regarding treatment. Some patients are lucky enough to be in full remission with only a course of budesonide for instance. How long this remission lasts is different from one patient to another again (weeks, months, years..). If the doctor judges the disease activity was really severe on first scope/scan, he/she might propose long term treatment more aggressively.
The key is close monitoring, to make sure you remain in remission, with or without treatment and especially important to do so for a patient like you who experiment very few symptoms. Untreated chronic inflammation of the intestine can lead to important complications, so it is really important to monitor it and control it.
In the meantime, I invite you to take a look at IBD-AID diet in my signature. Something you could start in the meantime before your next appointment. Maybe it could be of some help. I strongly believe in the power of diet as i know some patients for whom it works, but this has yet to fully studied in scientific research on large groups of patients.
let us know of your you fallow up appointment, wishing you well.