| Number of patients | Mean of distinct diagnosis | |
| One lesion | 33 | 1.00 |
| Two lesions | 43 | 1.74 |
| Three lesions | 31 | 2.45 |
| Four lesions | 24 | 2.96 |
| Five lesions | 4 | 3.50 |
| Six lesions | 3 | 4.00 |
| Seven lesions | 4 | 4.75 |
| 13 lesions | 1 | 6.00 |
| Total | 143 | 2.14 |