Sialocoele in a dog

Several aspirates were taken from a unilateral submandibular swelling in a 4-year-old, male entire Labrador.

Fig 1. Large clumps of pale blue-grey mucoid material are present, consistent with saliva. This is interspersed with moderate numbers of foamy macrophages.
Fig 2. Chronic haemorrhage is a common finding, characterised in this figure by haematoidin (golden yellow pigment) and haemosiderin (green-blue pigment).

Final Diagnosis



This is the typical cell picture associated with a salivary mucocoele (sialocoele).