Fine-needle aspiration biopsy of uveal melanoma: comparison of positive and negative diagnostic samples (n=143)
| Feature | Positive (n=131) | Negative (n=12) |
|---|---|---|
| Tumour height (mean) | 6.2 mm | 3.3 mm |
| Largest basal diameter (mean) | 13.4 mm | 11.6 mm |
| Treatment | ||
| Plaque | 91 | 11 |
| Enucleation | 40 | 1 |
| Location | ||
| Iris | 5 | 0 |
| Iridociliary | 4 | 0 |
| Ciliary | 3 | 1 |
| Ciliochoroidal | 26 | 0 |
| Choroidal | 93 | 11 |
| Approach* | ||
| Transcorneal | 8 | 0 |
| Transscleral | 68 | 3 |
| Transvitreal | 55 | 9 |
p value=0.029 by Fisher's exact test.
*Positivity of sample for diagnostic cytology: relationship to biopsy approach.