Pulse - July 2021 - 23

VETERINARY OPHTHALMIC CONSULTING
QUICK REFERENCE
12 Unusual Ophthalmic Diseases:
#1 Schwannoma of Blue-Eyed Dogs
Sara Calvarese, DACVO
Douglas Esson, DACVO
T
his will be the first in a series of twelve
monthly articles describing less-well-known
ophthalmic diseases designed to broaden the
reader's recognition and understanding of these
unusual conditions.
Presentation
Primary canine intraocular spindeloid tumors are relatively
uncommon. Despite this, a morphologically distinct spindle
cell tumor has been identified which is associated with partial
or complete blue eye coloration.
Any breed or cross-breed may be affected, however the
Siberian Husky, Australian Shepherd, Border Collie, Labrador
Retriever & German Shepherd are overrepresented.
Affected animals are usually late to middle-aged, with presentation
typically unilateral. Initial clinical findings may
include uveitis, pupillary dyscoria and/or a uveal mass-effect
with subsequent changes potentially including keratitis, cataract
formation, hyphema, retinal detachment, glaucoma and/
or extrascleral extension.
Neoplastic changes typically originate in iridociliary tissues
and comprise a focal expansion of spindeloid neoplastic
cells. These tumors are morphologically and immunohistochemically
most consistent with schwannoma.
Diagnosis & Treatment
The diagnosis of a spindeloid tumor in blue-eyed dogs/
schwannoma is made based on a combination of clinical
presentation and histopathologic interpretation (either via
incisional biopsy or more commonly via evaluation of eviscerated/enucleated
tissues), with enucleation frequently
becoming indicated during the course of the disease.
The potential for extension beyond orbital tissues as well
as metastasis exists and pre-surgical staging (via local lymph
node aspiration, three-view radiography and CBC/chemistry
evaluation) is warranted.
If indicated, post-operative management may include
chemo/metronomic therapy. The prognosis for affected animals
following appropriately timed enucleation is typically
positive. P
VOC is independently and family owned with compassionate,
qualified and experienced team members. Doctors Esson and
Calvarese are Board-Certified Veterinary Ophthalmologists.
Any breed or cross-breed
may be affected, however the
Siberian Husky, Australian
Shepherd, Border Collie,
Labrador Retriever & German
Shepherd are overrepresented.
PULSE
JULY 2021
23

Pulse - July 2021

Table of Contents for the Digital Edition of Pulse - July 2021

Pulse - July 2021
Chapter Meetings & Calendar
President’s Perspective
SCVMA Profile
Pulsepoints
The RVT and the Human- Animal Bond: Exploring the Interspecies Connection
Practical Pathology
Medical Leeway
UC Davis Update
Tools For Success
Angel Fund
Dear Tabby
The RVT
Industry Insights
Quick Reference
AVMA Diplomates
Digital Photography For Veterinarians
Resources
Disease Table
From The SCVMA Office
Pulse - July 2021 - Pulse - July 2021
Pulse - July 2021 - Cover2
Pulse - July 2021 - 1
Pulse - July 2021 - 2
Pulse - July 2021 - Chapter Meetings & Calendar
Pulse - July 2021 - President’s Perspective
Pulse - July 2021 - SCVMA Profile
Pulse - July 2021 - Pulsepoints
Pulse - July 2021 - 7
Pulse - July 2021 - 8
Pulse - July 2021 - 9
Pulse - July 2021 - 10
Pulse - July 2021 - 11
Pulse - July 2021 - The RVT and the Human- Animal Bond: Exploring the Interspecies Connection
Pulse - July 2021 - 13
Pulse - July 2021 - 14
Pulse - July 2021 - Practical Pathology
Pulse - July 2021 - Medical Leeway
Pulse - July 2021 - UC Davis Update
Pulse - July 2021 - Tools For Success
Pulse - July 2021 - Angel Fund
Pulse - July 2021 - Dear Tabby
Pulse - July 2021 - The RVT
Pulse - July 2021 - Industry Insights
Pulse - July 2021 - Quick Reference
Pulse - July 2021 - AVMA Diplomates
Pulse - July 2021 - Digital Photography For Veterinarians
Pulse - July 2021 - 26
Pulse - July 2021 - 27
Pulse - July 2021 - 28
Pulse - July 2021 - Resources
Pulse - July 2021 - Disease Table
Pulse - July 2021 - 31
Pulse - July 2021 - 32
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Pulse - July 2021 - From The SCVMA Office
Pulse - July 2021 - Cover3
Pulse - July 2021 - Cover4
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