1Dept. of Vety. Clinical Complex, College of Vety. Science, Sri Venkateswara Veterinary University, Garividi, Andhra Pradesh;
2Dept. of Vety. Surgery & Radiology, College of Vety. Science, Sri Venkateswara Veterinary University, Garividi, Andhra Pradesh
Dept. of Veterinary Pathology, College of Vety. Science, Sri Venkateswara Veterinary University, Garividi, Andhra Pradesh
*Correspondence E-mail: hemanthimmanni@gmail.com
Address for correspondence: Dr. I. Hemanth, Assistant Professor, Dept. of Veterinary Pathology, College of Vety. Science, Sri Venkateswara Veterinary University, Garividi, Andhra Pradesh;
Congenital melanocytic tumors are rather frequently occurring neoplasms in domestic animals especially in bovines. The present paper document a condition of congenital cutaneous melanoma in a 3 days old crossbred Jersey calf. Clinically, a large, firm, irregularly round growth measuring about 20 X 17 cms was noticed on the right lateral side of the neck. The tumour mass was removed by surgical excision under local anaesthesia. The mass had a dry, dark and blackish cut surface. Cytological evaluation revealed few individual cells with blackish-brown cytoplasmic pigments. Histopathologically, round to fusiform neoplastic melanocytes were noticed proliferating in the dermis. Abundant brownish-black melanin pigments were noticed in the cytoplasm obscuring the nuclear details. Junctional activity and intra-epidermal nesting of neoplastic cells were noticed. Blood vessels and connective tissue stroma were evident amidst the neoplastic melanocytes. Bleached tissue sections revealed numerous spindle and round cells with mild or no cytoplasmic pigmentation. Nucleus was large and round with multiple nucleoli arranged near to nuclear membrane. Based on the gross and histopathological findings, the current case was diagnosed as congential cutaneous malignant melanoma.
Congenital, crossbred Jersey calf, cutaneous, melanoma
