title: Liposarcoma in animals: literature review and case report in a domestic pig (Sus scrofa).
abstract: Liposarcomas are malignant tumors of adipocytes. The current report describes a liposarcoma in a 2.5-year-old, mixed-breed commercial sow that was detected during meat inspection. On gross examination, a firm, whitish, multinodular, 20 cm ×10 cm mass was observed in the perirenal area along with smaller nodules multifocally scattered within the renal parenchyma. Histological examination revealed an anaplastic sarcoma with clear intracytoplasmic lipidic vacuoles that were positive for Sudan black staining. Most of the cells were also positive for S100 and vimentin immunohistochemistry. Based on these results, a diagnosis of a perirenal liposarcoma was established. To the authors' knowledge, no previous reports of liposarcomas in pigs have been published. This report also includes a review of the literature published on animal liposarcomas.
authors.affiliation: Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal).
authors.forename: Georgina
authors.initials: G
authors.lastname: Doria-Torra
authors.affiliation: Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal) jorge.martinez.martinez@uab.cat.
authors.forename: Jorge
authors.initials: J
authors.lastname: Martínez
authors.affiliation: Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal).
authors.forename: Mariano
authors.initials: M
authors.lastname: Domingo
authors.affiliation: Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal).
authors.forename: Beatriz
authors.initials: B
authors.lastname: Vidaña
authors.affiliation: Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal).
authors.forename: Marcos
authors.initials: M
authors.lastname: Isidoro-Ayza
authors.affiliation: Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal).
authors.forename: María Isabel
authors.initials: MI
authors.lastname: Casanova
authors.affiliation: Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal).
authors.forename: Enric
authors.initials: E
authors.lastname: Vidal
mesh_terms: D000818:Animals; D003937:Diagnosis, Differential; D005260:Female; D007150:Immunohistochemistry / Q000662:veterinary; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000662:veterinary*; D008080:Liposarcoma / Q000175:diagnosis / Q000662:veterinary*; D034421:Sus scrofa; D013552:Swine; D013553:Swine Diseases / Q000175:diagnosis* / Q000473:pathology
keywords: Adipose tissue; Sudan black; animal liposarcoma; porcine