Metastatic malignant pilomatrixoma, acanthomatous ameloblastoma, and liver tumor in a dog with polyphagia, polyuria, polydipsia, and weight loss.

A 12-year-old, spayed female, Labrador dog was presented for evaluation of polyphagia, polyuria, polydipsia, weight loss of 2 months duration, and multiple cutaneous and subcutaneous masses. The dog was diagnosed with malignant pilomatrixoma with renal, lung, and lumbar metastases. This report describes an atypical presentation of malignant pilomatrixoma.