TABLE 3.
Size Measurements of Thymic Hyperplasia on CT
| Dimension | Total (n = 25) |
True Hyperplasia (n = 15) |
Lymphoid Hyperplasia (n= 10) |
P |
|---|---|---|---|---|
|
| ||||
| Transverse diameter (mm) | 0.68 | |||
| Median (first quartile, third quartile) | 46 (37, 49) | 46 (36, 48) | 45 (38, 52) | |
| Mean (SD) | 46 (11) | 46 (10) | 46 (13) | |
| Anteroposterior diameter (mm) | 0.21 | |||
| Median (first quartile, third quartile) | 36 (28, 55) | 36 (27, 49) | 45 (30, 71) | |
| Mean (SD) | 43 (18) | 39 (15) | 48(21) | |
| Right lobe length (mm) | 0.86 | |||
| Median (first quartile, third quartile) | 36 (27, 40) | 36 (27, 40) | 36 (27, 40) | |
| Mean (SD) | 35 (12) | 35 (12) | 36 (12) | |
| Right lobe thickness (mm) | 0.62 | |||
| Median (first quartile, third quartile) | 16 (13, 19) | 15 (13, 18) | 18 (11, 21) | |
| Mean (SD) | 16 (7) | 16 (5) | 17 (9) | |
| Left lobe length (mm) | 0.22 | |||
| Median (first quartile, third quartile) | 42 (37, 60) | 43 (36, 49) | 52 (37, 72) | |
| Mean (SD) | 48 (16) | 44 (13) | 55 (18) | |
| Left lobe thickness (mm) | 0.56 | |||
| Median (first quartile, third quartile) | 15 (11, 19) | 15 (10, 20) | 17 (13, 19) | |
| Mean (SD) | 16 (6) | 15 (5) | 17 (7) | |
Note—The measurements were performed excluding one patient with round shape of the thymus located in the left side of the anterior mediastinum, whose round thymus was considered to represent the left lobe.