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2. Malignant Pilomatricoma in a Young Dog
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   Catherine F. Ruff et al, 2016, Veterinary Radiology & Ultrasound CrossRef
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   D.R. Rissi, 2019, Journal of Comparative Pathology CrossRef
5. Histologic features of hair follicle neoplasms and cysts in dogs and cats: a diagnostic guide
   Dominique J. Wiener, 2021, Journal of Veterinary Diagnostic Investigation CrossRef
6. Ultrasonographic features of a histologically confirmed pilomatricoma in a dog
   Marion Fenet et al, 2023, Veterinary Record Case Reports CrossRef