Table 4.

ALTR grades assessed on MARS-MRI

ALTR grades	Modular (n = 45)	Standard (n = 22)
0	19	13
1	10	2
2	2	0
3	6	1
4	3	5
Missing	5	1

0 = no ALTR; 1 = cystic ALTR with a wall thickness of < 3 mm;

2 = cystic ALTR with a wall thickness of > 3 mm and without any solid parts;

3 = cystic ALTR with a wall thickness of > 3 mm with a solid part, but comprising less than 50% of the total ALTR area;

4 = solid ALTR.