A one-day-old male Holstein calf was presented with a palpable subcutaneous mass, extending from the parotid to the orbital region, involving entire the right side of the face and a bulky flabby mass on the tongue. Histological examination confirmed the subcutaneous lipoma and infiltrative lingual myxoma. In this report, clinical and detailed histhopathological findings of congenital infiltrative myxoma are described in a newborn calf and coincidence with facial lipoma is reported for the first time.
Key word: Calf, Histopathology, Lipoma, infiltrative Myxoma
Introduction:
Tumours in calves, like those in children, are relatively uncommon. These tumours are interesting because of their occurrence early in life, indicating a probable congenital nature(Misdorp, 2002). Myxoma is a benign neoplastic process (Okamoto et al., 2002) of fibroblast or multipotential mesenchymal cells origin distinguished by its abundant myxoid matrix rich in mucopolysaccharides (Maxie and Jubb, 2007; Meuten, 2002). Myxoma is extremely rare in cattle (Misra et al., 1981). It usually occurs in adult or aged animals as solitary or infiltrative soft masses (Maxie and Jubb, 2007). In a retrospective study of 6,706 cattle during the period of January 1964 to December 2008, only one case of myxoma was detected among 586 tumors in Brazil (Lucena et al., 2011). Etiology of this tumor is unknown (Allen, 2000). Genetics, envorimental factors, carsinogenic drugs or miscellenous toxic substances are among the probable causes of this neoplasm (Yeruham et al., 1999). Tumors arising from subcutaneous lipocytes occur in all species. Lipomas are most common in dogs and may be multiple. In all species, they usually occur in adult and aged animals and are most ...
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...nd Small Animal Clinician, 76, 381.
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