Table 2. Summary Data on Baseline Ocular and Tumor Variables in 18 Patients With Primary PUM Who Were Younger Than 21 Years When Treated.
| Characteristic | No. (%) |
|---|---|
| Sex | |
| Male | 8 (44) |
| Female | 10 (56) |
| Age of patients, mean (SD) [range], y | 16.6 (4.2) [4.4-20.8] |
| Eye | |
| Right | 9 (50) |
| Left | 9 (50) |
| Best corrected visual acuity in affected eyea | |
| 20/40 or Better | 4 (22) |
| 20/50 to 20/100 | 8 (44) |
| 20/200 or Worse | 6 (33) |
| Tumor site | |
| Exclusively choroidal | 12 (67) |
| Ciliochoroidal | 6 (33) |
| TNM tumor size | |
| T1 | 3 (17) |
| T2 | 7 (39) |
| T3 | 6 (33) |
| T4 | 2 (11) |
| Categorical distance between tumor and foveola | |
| Subfoveal | 3 (17) |
| Not subfoveal but ≤3 mm from foveola | 3 (17) |
| >3 mm From foveola | 12 (67) |
| Categorical distance between tumor and optic disc | |
| Extends to optic disc margin | 3 (17) |
| Not extending to optic disc margin but ≤3 mm from optic disc | 6 (33) |
| >3 mm From optic disc margin | 9 (50) |
| Extrascleral extension of tumor | |
| Absent | 17 (94) |
| Presentb | 1 (6) |
| TNM stage of posterior uveal melanoma | |
| I | 4 (22) |
| II | 9 (50) |
| III | 5 (28) |
| IV | 0 |
| Largest basal diameter of tumor, mean (SD) [range], mm | 12.8 (4.6) [6.5-24] |
| Thickness of tumor, mean (SD) [range], mm | 7.2 (3.6) [3-16] |
a
Snellen equivalent.
b
In the 1 case that exhibited extrascleral extension of tumor at diagnosis, that extension was more than 10 mm in both diameter and thickness.