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Case Reports
. 2022 Sep;8(5):1867-1871.
doi: 10.1002/vms3.853. Epub 2022 Jun 6.

Dacryops with dacryolithiasis in a dog

Lina Susanti  1 , Seokmin Go  1 , Du-Min Go  2 , Sang-Ho Woo  2 , Kangmoon Seo  1 , Seonmi Kang  1
Affiliations
Case Reports

Dacryops with dacryolithiasis in a dog

Lina Susanti et al. Vet Med Sci. 2022 Sep.

Abstract

Background: A 10-year-old castrated male Maltese dog was presented with chronic swelling that had been present for at least 5 years in the medial canthus of the right eye (OD).

Objectives: To describe the treatment outcome of dacryops with dacryolithiasis.

Methods: Bilateral patency of the nasolacrimal system was confirmed by flushing of both upper and lower puncta. Ocular ultrasonography revealed a well-defined, oval-shaped, heterogeneous mass with several hyperechoic foci. Dacryocystorhinography revealed no connection between the mass and lacrimal canaliculus. Gentle blunt dissection of the fibrous connective tissue around the cystic mass was performed. The mass was removed, which intraluminally contained multiple calculi.

Results: Histopathologically, the cystic structure was lined by simple cuboidal epithelium and surrounded by smooth muscle actin positive myoepithelial cells consistent with dacryops derived from the lacrimal glandular ductal system. In addition, several spherical basophilic minerals were observed in the lumen, which were identified as dacryoliths.

Conclusion: Surgical removal of this dacryops with dacryolithiasis was curative without recurrence after four months.

Keywords: Maltese; dacryolithiasis; dacryops; ectopic lacrimal gland; lacrimal system; nasolacrimal cyst.

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Conflict of interest statement

None of the authors of this article has a financial or personal relationship with other people or organisations that could inappropriately influence or bias the content of the paper.

Figures

FIGURE 1
FIGURE 1
Diagnostic approaches used. (a) Nasolacrimal flushing of the lower nasolacrimal puncta of the right eye; (b) contrast dacryocystorhinography of the nasolacrimal duct showed no connection to the mass; (c) ocular ultrasonography showed a well‐defined, oval‐shaped, heterogeneous mass (asterisk); (d) the cyst contained several hyperechoic foci (arrows)
FIGURE 2
FIGURE 2
Intraoperative photograph of cyst dissection. (a) Blunt dissection of the ventromedial eyelid revealed a cyst (dacryops). (b) The cyst contained several small‐sized stones (arrow)
FIGURE 3
FIGURE 3
Histopathology of the cyst in the medial canthus of the right eye. The cyst wall was lined by simple cuboidal epithelium (arrow). A few basophilic mineral‐like materials were present inside the lumen (asterisk). Hematoxylin and Eosin staining. Bar (a) = 200 μm; (b) = 50 μm.
FIGURE 4
FIGURE 4
Immunohistochemistry of the cyst from the medial canthus of the right eye. (a) The cyst was surrounded by smooth muscle actin (SMA)‐positive cells in the outer layer of the ductal epithelium. (b) SMA‐positive blood vessels on the tissue around the cyst, serving as a positive control.
See this image and copyright information in PMC

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