title: Cytologic analysis of the mammary papillar discharge in a canine micropapillary carcinoma.
abstract: This is a report on the cytologic analysis of the mammary papillar discharge in a 7-year-old female Doberman dog with an invasive micropapillary carcinoma. Cytologic evaluation of nipple discharge is a well-known method for the rapid diagnosis of breast cancer in women. However, there is no previous report regarding the use of this technique for assessing mammary tumors in dogs. The aim of this study was to describe the use of mammary papillar discharge cytology for diagnosing a micropapillary carcinoma in a dog. Cytologically, evaluation of the papillar discharge revealed cells arranged in clusters in a papillary pattern or in a morula-like arrangement, suggesting the diagnosis of a micropapillary carcinoma, which was subsequently confirmed by histopathology. Thus, mammary papillar discharge cytology should be considered as an ancillary method for evaluating mammary diseases in dogs.
authors.affiliation: Laboratory of Comparative Pathology, Department of General Pathology, Biological Sciences Institute, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.
authors.forename: Geovanni Dantas
authors.initials: GD
authors.lastname: Cassali
authors.affiliation: Laboratory of Comparative Pathology, Department of General Pathology, Biological Sciences Institute, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.
authors.forename: Lidianne Narducci
authors.initials: LN
authors.lastname: Monteiro
authors.affiliation: Laboratory of Comparative Pathology, Department of General Pathology, Biological Sciences Institute, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.
authors.forename: Conrado de Oliveira
authors.initials: Cde O
authors.lastname: Gamba
authors.affiliation: Laboratory of Comparative Pathology, Department of General Pathology, Biological Sciences Institute, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.
authors.forename: Karine Araújo
authors.initials: KA
authors.lastname: Damasceno
authors.affiliation: Laboratory of Comparative Pathology, Department of General Pathology, Biological Sciences Institute, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.|Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinary Sciences, São Paulo State University (FCAV/UNESP), Jaboticabal, Brazil.
authors.forename: Cecília Bonolo
authors.initials: CB
authors.lastname: de Campos
authors.affiliation: University José do Rosário Vellano (UNIFENAS), Alfenas, Brazil.
authors.forename: Breno Souza
authors.initials: BS
authors.lastname: Salgado
mesh_terms: D000818:Animals; D044963:Biopsy, Fine-Needle / Q000662:veterinary; D002291:Carcinoma, Papillary / Q000473:pathology / Q000662:veterinary*; D003581:Cytodiagnosis / Q000662:veterinary; D004285:Dogs; D004847:Epithelial Cells / Q000473:pathology; D005260:Female; D008207:Lymphatic Metastasis; D015674:Mammary Neoplasms, Animal / Q000473:pathology*
keywords: Fine-needle aspiration; mammary neoplasms; mammary papilla; micropapillary neoplasms