 He joined the Pumas youth system at age 14 and worked his way through the ranks to make his Primera División debut in 2004.On December 18, 2014 Espinosa signed for Atlante on loan from Pumas Unam on a season-long loan deal.Lymphoepithelioma

Lymphoepithelioma is a type of poorly differentiated nasopharyngeal carcinoma characterized by prominent infiltration of lymphocytes in the area involved by tumor.