Erdheim¿Chester disease: Diagnosis in endocrinology María José Vallejo Herrera; Francisco José Sánchez Torralvo; Verónica Vallejo Herrera; Gabriel Olveira Fuster; Iván Pérez de Pedro;

Fibrous variant of Hashimoto¿s thyroiditis as a sign of IgG4-related disease, mimicking thyroid lymphoma: Case report Pamela Benítez Valderrama; Alejandro Castro Calvo; Laura Rodrigañez Riesco; Rita Regojo Zapata; Paola Parra Ramírez;