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T-cell lymphoma in the tongue of a dog with cutaneous and striated forelimb muscle involvement / Linfoma de células T em língua de cão com envolvimento cutâneo e de musculatura estriada de membro torácico

Mariana Morata Raposo-Ferreira, Talita; Cesar Jark, Paulo; Rossi Varallo, Giovanna; Borin-Crivellenti, Sofia; Tinucci-Costa, Mirela; Laufer-Amorim, Renée; Barboza De Nardi, Andrigo.
Acta Sci. vet.; 42: 01-06, 2014.
Artigo em Português | VETINDEX-Express | ID: vti-475421

Resumo

Background: Primary tongue tumors rarely affect dogs and correspond to 4% of tumors involving the oropharynx. Until now, primary tongue lymphoma had not been reported. However, lymphoma involvement in the skeletal muscle, although quite unusual, was described in the literature in four cases. Cutaneous lymphoma is another rare extranodal manifestation. The objective of this report is to describe a case of T immunophenotype lymphoma occurrence, whose manifestation is atypical, not only because it is situated in the tongue muscle but also because of the subsequent involvement of the striated musculature of the left forelimb and the skin, which showed unfavorable evolution.Case: A female seven-year-old mongrel was seen showing a regular lump in the base of the tongue, 3 cm in diameter, not ulcerated and of firm consistency, with halitosis as the only clinical sign of the disease. Incisional biopsy of the lump was performed and histopathology verified that it was large cell lymphoma. The material was sent for immunohistochemical evaluation and was characterized as T immunophenotype lymphoma by positive CD3 and negative CD79a marking. The CHOP (cyclophosphamide, doxorubicin, vincristine and prednisone) chemotherapy protocol was established as treatment and after the first chemotherapy session there was partial remission of the mass, measuring 2 cm in diameter. The lump, however, rema
Background: Primary tongue tumors rarely affect dogs and correspond to 4% of tumors involving the oropharynx. Until now, primary tongue lymphoma had not been reported. However, lymphoma involvement in the skeletal muscle, although quite unusual, was described in the literature in four cases. Cutaneous lymphoma is another rare extranodal manifestation. The objective of this report is to describe a case of T immunophenotype lymphoma occurrence, whose manifestation is atypical, not only because it is situated in the tongue muscle but also because of the subsequent involvement of the striated musculature of the left forelimb and the skin, which showed unfavorable evolution.Case: A female seven-year-old mongrel was seen showing a regular lump in the base of the tongue, 3 cm in diameter, not ulcerated and of firm consistency, with halitosis as the only clinical sign of the disease. Incisional biopsy of the lump was performed and histopathology verified that it was large cell lymphoma. The material was sent for immunohistochemical evaluation and was characterized as T immunophenotype lymphoma by positive CD3 and negative CD79a marking. The CHOP (cyclophosphamide, doxorubicin, vincristine and prednisone) chemotherapy protocol was established as treatment and after the first chemotherapy session there was partial remission of the mass, measuring 2 cm in diameter. The lump, however, rema
Biblioteca responsável: BR68.1