Dermatologic Tumors (Excluding Sarcoids)

Características clínicas e histopatológicas da placa aural em eqüinos das raças Mangalarga e Quarto de Milha

“…Assim como no estudo realizado por Binninger & Piper (1968), as lesões compatíveis com placa aural só foram observadas em animais com idade superior a um ano. Embora as lesões fossem estatisticamente mais comuns em animais da raça Mangalarga, vários autores consideram que as lesões de placa aural não têm predileção racial, entretanto estes autores não incluíram esta raça nos seus estudos (Binninger & Piper 1968, Fairley & Haines 1992, Johnson 1998.…”

“…A ausência de regressão espontânea das lesões, durante o desenvolvimento deste estudo, coincide com as observaçãoes de diversos autores (Binninger & Piper 1968, Pascoe 1973, Fadok 1995, Johnson 1998, Radostits et al 2002, que observaram que a placa aural, diferentemente das outras papilomatoses cutâneas, não regride espontaneamente.…”

Cutaneous lymphohistiocytic and multifocal lymphoma in an adult mare

“…However, the same is not true regarding the age or the breed of the affected horses, although cutaneous lymphoma more often occurs in adult to aged animals (Scott and Miller 2003). From a clinical and histopathological point of view, the primary cutaneous lymphoma in the horse is actually non-epitheliotropic and subcutaneous and only rarely epitheliotropic (Staempfli et al 1988, Littlewood et al 1995, Hübe et al 1997, Johnson et al 1998, Potter and Anez 1998, Epstein and Hodge 2005, de Brujin et al 2007). The latter form is expressed as multifocal to generalized exfoliative dermatitis and is accompanied or not by pruritus and sometimes by nodules and ulcerations, as it has been witnessed in other animal species (Scott and Miller 2003).…”

First cases of animal diseases published since 2000. 4. Horses

“…However, this percentage may exaggerate the malignancy rate of these tumours in horses, as many non-malignant melanomas are probably not reported. Initial metastasis often occurs in the regional lymph nodes by way of lymphatic vessels (6). Cutaneous equine melanomas can also metastasize via blood vessels and by local extension (6).…”

“…Initial metastasis often occurs in the regional lymph nodes by way of lymphatic vessels (6). Cutaneous equine melanomas can also metastasize via blood vessels and by local extension (6). A description is given of the macroscopical and microscopical findings of the observed cutaneous melanomas and their metastases in the spleen, the thoracic vertebral column and in the bone marrow.…”