This healthy 35-year-old woman presented with a 2-year history of painless, progressive
proptosis in the right eye. There was no lid retraction or dysthyroidism. Her acuity,
pupils, confrontation field, motility, and ocular examination findings were normal.
Orbital computed tomography showed a large well-circumscribed retrobulbar cyst with
intraluminal contents near the ethmoidal-maxillary suture line. The cyst was drained
through a transcaruncular incision. Keratin contents and hair were removed, and the
inner lining was cauterized with bipolar. The cyst has not recurred at 9-month follow-up.
Dermoids are the most common cystic choristomas of the orbit. However, medial intraconal
dermoids are rare.
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Article info
Publication history
Published online: July 16, 2020
Accepted:
May 27,
2020
Received:
January 7,
2020
Identification
Copyright
© 2020 Canadian Ophthalmological Society. Published by Elsevier Inc. All rights reserved.
