The concurrent occurrence of a bovine viral diarrhoea virus type-1 infection and necrotising-suppurative bronchopneumonia due to Trueperella pyogenes was diagnosed in a 4-month-old male calf. The pulmonary lesions were characterised by necro-suppurative bronchopneumonia with intralesional gram-positive microorganisms. The reverse transcription polymerase chain reaction (RT-PCR) and matrix-assisted laser desorption ionisation time-of-flight mass spectrometry analysis (MALDI-TOF MS) also indicated the presence of BVDV type-1 and Trueperella pyogenes agents, respectively. A positive immunoreaction to the BVDV was present in the vascular walls in the lungs, hepatocytes, lymphoid cells in the spleen and lymph nodes, and neurons in the brain. With this case study, the two infections were, to the best of our knowledge, reported concurrently for the first time. It can be assumed that a subclinical BVDV infection might contribute to the occurrence of Trueperella pyogenes infections in calves.

A 2-day-old calf was presented with a bilateral mass in the medial canthus of the upper eyelid. The masses were removed surgically. The morphological diagnosis was a bilateral hamartoma characterised by an abnormal mixture of tissue indigenous to that area including blood vessels, striated muscle bundles, adipose tissue, isolated cartilage and nerve bundles. No recurrence developed in the 6 months following the surgical removal. Overall, although this congenital defect is relatively rare, it should be differentiated from eyelid tumours such as haemangiomas, squamous cell carcinomas, Meibomian gland tumours, dermoid cysts and teratomas in cattle.