My wife also was suspected of TB. Which with further tests was diagnosed with inactive TB. Although even those tests were not 100% conclusive . But we were early in our process so her doctor put her on the meds and we just waited for word from our VO. Because my wifes original meds expired early in March, she was sent notice to re-medical. This time all was good and we were told to submit her passport. We will be coming up on 12 months but should have her Visa my end of May for a total processing time of aprox 13 months
As was allready posted, you will not be denied, just need to clear up the condition prior to a visa being issued.
In our case I dont think it caused any extra time in our over all process as we are well under the average processing time for our VO