19 岁猫多中心性原位鳞状细胞癌（猫鲍文病）
Clinical photograph of a 19-year-old cat with multicentric squamous cell carcinoma in situ (feline Bowen disease). Lesions first appeared on this cat's face, then on the limbs and body. Lesions were multiple, black or brown, nonpruritic hyperkeratotic plaques and papules.
Courtesy of Dr. Alice Villalobos.
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