Undifferentiated spindle cell carcinoma of the thyroid in a dog.
D000818:Animals; D001707:Biopsy, Needle; D002277:Carcinoma / Q000473:pathology / Q000662:veterinary*; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D013964:Thyroid Neoplasms / Q000473:pathology / Q000662:veterinary*