Transarterial embolisation in the treatment of persistent haematuria in two dogs with lower urinary tract carcinoma

Two dogs with haematuria and frequent urination were referred to our veterinary hospital. They were diagnosed with lower urinary tract carcinoma based on urine cytology and BRAF mutation testing. Transarterial embolisation was performed because of persistent haematuria. This procedure involved super-selective catheterisation and embolisation of the tumour-feeding arteries using gelatine sponge particles, achieving near stasis. After transarterial embolisation, both patients showed resolution of haematuria within 4 days and a marked reduction in tumour volume after 1 month. However, both patients experienced recurrence of haematuria 4 to 6 weeks after the procedure, leading to a second embolisation being performed for each. Following the second embolisation, the haematuria resolved again. Transarterial embolisation could provide benefits for managing persistent haematuria and provides local tumour control in dogs with lower urinary tract carcinoma.