ISSN 2398-2993      

Dermal melanoma

obovis
Contributor(s):

Catherine Fraser

Ben Dustan

Synonym(s): Melanocytoma


Introduction

  • Cause: unknown.
  • Signs: uncommon cause of neoplasia in cattle. Less than 2% of bovine tumors.
  • Diagnosis: histopathology or cytology.
  • Treatment: surgical resection.
  • Prognosis: most are benign so good prognosis after resection.

Pathogenesis

Etiology

  • Benign or malignant neoplasms arising from melanocytes or melanoblasts.

Pathophysiology

  • Benign melanomas may become secondarily infected or hemorrhagic.
  • Malignant melanomas frequently metastasize to local and distant sites eg visceral and cranial spread.

Timecourse

  • Benign usually grow slowly.
  • Malignant grow quickly and secondary spread develops early, this is rare in cattle.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed Papers

  • Recent references from PubMed and VetMedResource.
  • Pravettoni D, Ordobazari M & Beineke A (2003) Congenital melanoma in a heifer. Dtsch Tierarztl Wochenschr 110 (1), 34-36 PubMed.
  • Yeruham I & Perl S (2002) Melanocytoma and myxoma-tumours of the limbs in cattle. Berl Munch Tierarztl Wochenschr 115 (11-12), 425-427 PubMed.
  • Baba A I, Gaboreanu M, Rotaru O & Kwieczinsky R (1983) Malignant melanomas in farm animals. Morphol Embryol (Bucur) 29 (3), 191-194

Other sources of information

  • Scott D W (1988) Large Animal Dermatology. W B Saunders, USA.

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