title: Extracutaneous mast-cell tumor in the dog.
abstract: Three neoplasms of extracutaneous mast-cell origin, arising from the nasopharynx, oral cavity, and hepatopancreatic lymph nodes respectively, were diagnosed in three dogs. The neoplasms had histologic features similar to those of cutaneous mast-cell tumors, but had limited metastasis mostly involving the regional lymph nodes. One dog had a perforating duodenal ulcer, suggesting that duodenal ulcers can occur with extracutaneous tumors as they do with some cutaneous mast-cell tumors in the dog.
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D005260:Female; D008113:Liver Neoplasms / Q000473:pathology / Q000662:veterinary; D008198:Lymph Nodes / Q000473:pathology; D008297:Male; D012515:Mast-Cell Sarcoma / Q000473:pathology / Q000662:veterinary*; D009062:Mouth Neoplasms / Q000473:pathology / Q000662:veterinary; D009303:Nasopharyngeal Neoplasms / Q000473:pathology / Q000662:veterinary; D010190:Pancreatic Neoplasms / Q000473:pathology / Q000662:veterinary