Rhabdomyosarcomas in young pigs in a swine breeding farm: a morphologic and immunohistochemical study

Within a 6-month-period, solitary or multiple tumors were observed in 25 young pigs in their first weeks of life in a swine breeding farm. The herd comprised approximately 100 animals, and affected pigs were observed in several litters. The number of affected littermates varied from one to three. Fi...

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Veröffentlicht in:Veterinary pathology 1993-05, Vol.30 (3), p.271-279
Hauptverfasser: Vos, J.H, Borst, G.H.A, Mulas, J.M. de las, Ramaekers, F.C.S, Mil, F.N. van, Molenbeek, R.F, Ivanyi, D, Ingh, T.S.G.A.M. van den
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container_end_page 279
container_issue 3
container_start_page 271
container_title Veterinary pathology
container_volume 30
creator Vos, J.H
Borst, G.H.A
Mulas, J.M. de las
Ramaekers, F.C.S
Mil, F.N. van
Molenbeek, R.F
Ivanyi, D
Ingh, T.S.G.A.M. van den
description Within a 6-month-period, solitary or multiple tumors were observed in 25 young pigs in their first weeks of life in a swine breeding farm. The herd comprised approximately 100 animals, and affected pigs were observed in several litters. The number of affected littermates varied from one to three. Five animals, all from different litters and with a total of 11 tumors, were studied. Histologically the tumors were classified as undifferentiated sarcomas. Electron microscopic examination of the tumors (n = 3) revealed myogenic differentiation, characterized by the presence of numerous cytoplasmic filaments with longitudinal densities and cytoplasmic dense bodies. Immunohistochemically, all 11 tumors were labeled by vimentin and desmin antibodies. Two tumors from which frozen material was available were additionally labeled by a titin antibody but did not show immunoreactivity with antibodies directed against myosin and α-sarcomeric actin. The tumors were finally diagnosed as undifferentiated rhabdomyosarcomas. The high incidence of these tumors within a short period of time in multiple young animals in different litters indicates a common causative event. The clinical history suggests a genetic cause.
doi_str_mv 10.1177/030098589303000308
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The herd comprised approximately 100 animals, and affected pigs were observed in several litters. The number of affected littermates varied from one to three. Five animals, all from different litters and with a total of 11 tumors, were studied. Histologically the tumors were classified as undifferentiated sarcomas. Electron microscopic examination of the tumors (n = 3) revealed myogenic differentiation, characterized by the presence of numerous cytoplasmic filaments with longitudinal densities and cytoplasmic dense bodies. Immunohistochemically, all 11 tumors were labeled by vimentin and desmin antibodies. Two tumors from which frozen material was available were additionally labeled by a titin antibody but did not show immunoreactivity with antibodies directed against myosin and α-sarcomeric actin. The tumors were finally diagnosed as undifferentiated rhabdomyosarcomas. The high incidence of these tumors within a short period of time in multiple young animals in different litters indicates a common causative event. The clinical history suggests a genetic cause.</abstract><cop>Los Angeles, CA</cop><pub>SAGE Publications</pub><pmid>8333108</pmid><doi>10.1177/030098589303000308</doi><tpages>9</tpages></addata></record>
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identifier ISSN: 0300-9858
ispartof Veterinary pathology, 1993-05, Vol.30 (3), p.271-279
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subjects Animals
CERDO
CHEMISTRY
CHIMIE
Cytoskeletal Proteins - analysis
Disease Outbreaks
HISTOPATHOLOGIE
HISTOPATHOLOGY
HISTOPATOLOGIA
IMMUNOHISTOCHEMISTRY
IMMUNOLOGIE
IMMUNOLOGY
INMUNOLOGIA
Microscopy, Electron
MUSCLE
MUSCLES
MUSCULOS
PORCIN
QUIMICA
Rhabdomyosarcoma - chemistry
Rhabdomyosarcoma - epidemiology
Rhabdomyosarcoma - pathology
Rhabdomyosarcoma - veterinary
SARCOMA
SARCOME
Soft Tissue Neoplasms - chemistry
Soft Tissue Neoplasms - epidemiology
Soft Tissue Neoplasms - pathology
Soft Tissue Neoplasms - veterinary
SWINE
Swine Diseases - epidemiology
Swine Diseases - pathology
title Rhabdomyosarcomas in young pigs in a swine breeding farm: a morphologic and immunohistochemical study
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