You have to consider the risks of getting caught.
I joined in 07. They ask you over and over during your recruitment proccess if there is any major medical issues past or present while threatening you the whole time if you withhold anything theyll kick you out,fine you and throw you in prison.
Then when all that is said and done they strip you nked and check every single inch of your body. Including your nutsack and your .
They will notice osteonomy scars and disproportionate limbs.
Then also consider the fact that you will be carrying heavy equipment(rucksack, iotv vest, rifle +ammo, extra equipment). That is already strneous on a regular body. CLL patient most definetly has abnormal bio mechanichal bone structure. If you have spine issue soon or few years down the line and the army finds out they will probabbly charge you with fraud and deny benefits.
Plus other people depend on you with their lives and youll never be able to cover their ass like theyre expecting you to.