Data/hora: 01/06/2024 01:32:34

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Mammary fibroadenomatoid hyperplasia in a heifer	
Autores: 	Silva,Lorena Ferreira; Silva,Luiz Antonio Franco da; Rabelo,Rogério Elias; Silva,Wanessa Patrícia Rodrigues da; Cassali,Geovanni Dantas; Gonçalves,Aline De Biasi Bassani; Sant’Ana,Fabiano José Ferreira de.	
Data: 	2017-01-01	
Ano: 	2017	
Palavras-chave: 	Mammary hyperplasia; Estrogen; Progesterone; Diseases of cattle.	
Resumo: 	ABSTRACT: This manuscript described the anatomopathological and immunohistochemical findings in a rare case of mammary fibroadenomatoid hyperplasia in a 12-month-old Holstein heifer. A yellow, multilobulated, firm 20cm x 9cm x 6.5cm mass affecting the right quarters of the udder was observed. Total mastectomy was performed. Microscopic evaluation revealed severe hyperplasia of the mammary epithelium and numerous well-differentiated and mildly pleomorphic acini. Additionally, moderate proliferation of the fibrous connective tissue and the myoepithelial cells near the proliferating acini was evident. About 50% of the proliferating epithelial cells showed positive nuclear labeling for estrogen and progesterone receptors, and approximately one-third were positive for Ki-67. In addition, the myoepithelial cells exhibited diffuse nuclear immunoreactivity for p63. Based on the clinical, morphologic, and immunohistochemical findings, a diagnosis of mammary fibroadenomatoid hyperplasia with probable influence of ovarian steroids was made.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600552	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20160943	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.47 n.6 2017	
Fonte: 	info:eu-repo/semantics/openAccess