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Case Reports
. 2025 Sep;15(9):4755-4758.
doi: 10.5455/OVJ.2025.v15.i9.81. Epub 2025 Sep 30.

Cytological diagnosis of ganglion cyst in a dog: A case report from a resource-limited setting

Issa Carolina García Reynoso  1 , Soila Maribel Gaxiola Camacho  2 , César Augusto Flores Dueñas  1 , Nohemí Castro Del Campo  2 , Miguel Ángel Rodríguez Gaxiola  2 , José Carlomán Herrera Ramírez  1 , Katya Montserrat Meza Silva  1 , Sergio Daniel Gómez Gómez  1
Affiliations
Case Reports

Cytological diagnosis of ganglion cyst in a dog: A case report from a resource-limited setting

Issa Carolina García Reynoso et al. Open Vet J. 2025 Sep.

Abstract

Background: Ganglion cysts (GCs) are rare conditions in both dogs and humans; thus, descriptions that aid in diagnosis are scarce; however, some differences exist that help us distinguish between them.

Case description: This case report presents a young female Dalmatian who developed a subcutaneous 6-cm nodule near the right ischial tuberosity, with irregular borders, slight mobility, and no pain. Fine needle aspiration cytology revealed a viscous, mucinous aspirate with sparse cellular content consistent with a GC. In this report, we discuss the most relevant findings observed under optical microscopy, present clinical data specific to this patient, and highlight the differences between ganglion and synovial cysts.

Conclusion: This case highlights the diagnostic value of fine-needle aspiration cytology, especially in settings with limited access to advanced diagnostic techniques.

Keywords: Cytology; Fine-needle aspiration; Ganglion cyst; Nodule; Synovial cyst.

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Conflict of interest statement

The authors of this case report declare no conflicts of interest to declare with any person or institution.

Figures

Fig. 1.
Fig. 1.. (a) Nodule on the right ischial tuberosity. (b) Erythema and irregular borders.
Fig. 2.
Fig. 2.. (a) Fusiform cells in the center and a round foamy cell on left side 40×. (b) Granular background and fusiform cell 100×. (c) Round foamy cells 20×. (d) Round foamy cells with granular background 40×.
See this image and copyright information in PMC

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