For this reason, these tumors are difficult to treat, and it is common for them to recur after initial treatment.
It is not uncommon for them to recur after initial treatment. For this reason, these tumors are difficult to treat.
For this reason, these tumors are difficult to treat. It is not uncommon for them to recur after initial treatment.
For this reason, these tumors are difficult to treat. It is not uncommon for them to recur after initial treatment.