Intracranial metastases of canine renal cell carcinoma: Computed tomography findings

Abstract A 5‐year‐old, female, neutered Dalmatian was presented to the neurology service for investigation into a 4‐week history of worsening neurological deficits localising to the forebrain. Pre‐referral abdominal ultrasound revealed a suspected mass arising from the left kidney. Computed tomography of the head, chest and abdomen revealed a large mass in the left kidney with multiple sites of regional and distant metastatic lesions, including brain metastases. Intracranial lesions appeared as multiple well‐defined intra‐axial nodules with mineral attenuation and perilesional vasogenic oedema, resulting in a moderate mass effect. Cytological analysis from fine‐needle aspirates of the renal mass was consistent with renal cell carcinoma. To the authors’ knowledge, intralesional calcifications or haemorrhages have not yet been described as a feature of intracranial metastatic carcinoma in veterinary patients.