Thanks for your question on Healthcare Magic.
I can understand your concern.
No, this is not suggestive of improvement.
With treatment, either the size of
abscess should remain same or should decrease.
But since it is increasing, this is not sign of improvement.
Sometimes, there is infection with drug resistant tubercular bacteria. In this case, even with routine anti TB drugs, patient is not improving.
Another cause for this is secondary bacterial infection. Sometimes along with tb infection, there is infection with other bacteria. So we have to give other broad spectrum antibiotic along with anti tubercular drugs.
So better to consult tb specialist and get done abscess fluid culture and sensitivity report to rule out above mentioned causes.
Hope I have solved your query. I will be happy to help you further. Wishing good health to your mother. Thanks.