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  • Title: Primary neuroblastoma in the skin of an adult shih tzu dog.
    Author: Michishita M, Momozawa Y, Oizumi T, Ohkusu-Tsukada K, Takahashi K.
    Journal: Vet Dermatol; 2010 Aug; 21(4):408-11. PubMed ID: 20230584.
    Abstract:
    A subcutaneous mass arising in the right gluteal area of an 11-year-old female shih tzu dog was surgically excised. Histologically, the mass was composed of small round or ovoid neoplastic cells that were arranged in nests of various sizes. The neoplastic cells generally had hyperchromatic nuclei and scanty eosinophilic cytoplasm, and were surrounded by a pale pink fibrillar area. Immunohistochemically, the neoplastic cells were positive for vimentin, S-100 protein, neurone-specific enolase and synaptophysin, but negative for cytokeratin, neurofilament protein, glial fibrillary acidic protein and chromogranin A. On ultrastructural observation, aggregates of thin cytoplasmic processes were frequently seen among the neoplastic cells. Based on these features, the tumour was diagnosed as a neuroblastoma. To the authors' knowledge, this is the first description of a neuroblastoma originating from the skin in an adult dog.
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