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NCCN Guidelines Version 2.2021
Melanoma: Uveal
develop between 5 to 110 months, with one prospective study reporting a
mean time to development of 15 months, and another reporting a median
time to development of 24 months.
183,379,380,383,387,389
Development of optic
neuropathy after SRT has been observed in multiple prospective studies,
may occur in up to 40% of patients, and can be
severe.
183,379,380,382,384,387,389,399
Optic neuropathy typically has delayed
onset, and has been reported to develop between 4 months and 9 years
after treatment, with a mean time to development of 21
months.
183,380,384,387,389,399
Prospective studies have suggested a variety of
risk factors for optic neuropathy, including larger tumor size, tumor stance
to the optic disc, higher total RT dose, higher dose to the optic nerve, the
ratio of gross tumor volume (GTV) to PTV, or the distance from PTV to the
optic nerve.
379,384,387,399
SRT can also cause optic disc edema, which is
often severe, develops between 1 to 2 years after treatment, and has a
median time to development of 18 months.
379
Enucleation
Prospective studies have found that secondary enucleation was
sometimes needed due to local recurrence or complications in patients
with primary uveal melanoma treated with proton RT or
SRT.
47,373,379,380,384,387,388,396
Among cases of enucleation due to
complications, neovascular glaucoma was the most common cause;
others included angle closure glaucoma, tumor necrosis syndrome,
corneal ulcer, retinal detachment, and pain, sometimes due to elevated
intraocular pressure.
47,373,380,384,387,388,396
These secondary enucleations
occurred over a wide time range, from 2 months to greater than 10 years
after treatment.
47,373,384,389,438,476
Although most enucleations occurred
within 5 years of treatment, the risk of enucleation between 5 to 10 years
after treatment is non-negligible.
47,388,389,396,438,476
Larger tumor size,
proximity to the optic disc, high intraocular pressure, or retinal detachment
before treatment may increase the risk of secondary enucleation after
proton RT.
476
Surveillance Methods for Local Recurrence or Complications
To monitor for local recurrence and possible complications after treatment
of the primary tumor in patients with uveal melanoma, prospective studies
have followed patients with regular clinical and ophthalmologic exams.
For patients treated with enucleation in the COMS trial, there were follow-
up exams at 1 to 2 weeks after surgery to assess healing status, and at 6
months, 12 months, and annually thereafter, in which the eye socket and
eyelids were examined for possible recurrence or complications, and the
fit of prosthesis checked.
301,303,477
For patients treated with RT (brachytherapy, particle beam RT, or SRT) in
prospective studies, follow-up exams typically included complete
ophthalmologic exam of the treated eye, with indirect ophthalmoscopy, slit-
lamp exam, tonometry, color fundus photography, A-scan and B-scan US,
and measurement of VA and visual
field.
47,183,186,187,327,330,331,333,335,347,366,367,370,380,383,384,387-
389,396,437,439,440,468,472,473,477-479
Many prospective studies also included
fluorescein angiography in follow-up exams, either at regular intervals or
as needed.
47,187,330,333,335,336,347,366,384,388,389,439,478
A few prospective studies
used gonioscopy,
187,388
OCT,
335,366,437
or MRI.
383,396
For most prospective
studies following patients with primary uveal melanoma treated with RT,
data taken at regular intervals included VA, intraocular pressure, tumor
dimensions and shape, development of new extrascleral growth, orbital or
ciliary body mass, and retinal invasion, pathologic changes, changes in
tumor appearance, and patient symptoms (ie, ocular pain, vision
problems).
183,186,187,303,331,333,335,367,370,373,380,384,387-389,440,472,479
Some studies
monitored for changes in tumor reflectivity or tumor vascularity as signs of
regrowth/recurrence.
366,367,396,472
The frequency of follow-up exams after RT (brachytherapy, particle beam
RT, or SRT) varied across studies. For patients who were treated with
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