Mature solid tubal teratoma producing β-HCG simulating a ruptured tubal ectopic pregnancy. (March 2016) - Vázquez, Diana Dopico; Ríos, Ana Pereda; Calvo, Cristina Freire; Barro, Pedro Rodríguez; Maquieira, Cristina Guillán; Lodeiro, Eladio Busto; Martínez, Maria Pilar Troncoso