Return Text when RELATED Function has not match in related table

Hi, 

When adding a column to a calculated table from another table using RELATED(),  I would like to return "Text" where there is no related ID in the second table. I can accomplish this through adding the related column and then adding a second column using ISBLANK(), but I wanted to be able to do this by only adding one column. *If this were a LOOKUP(), I could return the alternate text). 

Is there a way to combine or nest the following?

1) Next_Enroll_Outcome a = Related('4_Enrollment'[Enroll_Inst_Outcome])

2) Next_Enroll_Outcome = If(ISBLANK('2_Enrollment'[Next_Enroll_Outcome a]),"3_StopOut",'2_Enrollment'[Next_Enroll_Outcome a])

Thank you.