A very rare cause of dyspnea with a unique presentation on a computed tomography scan of the chest: macrophage activation syndrome - Brandão-Neto, Rodrigo Antônio; Santana, Alfredo Nicodemos Cruz; Danilovic, Debora Lucia Seguro; Bernardi, Fabíola Del Carlo; Barbas, Carmen Silvia Valente; Mendonça, Berenice Bilharinho de (Jornal Brasileiro de Pneumologia, 2008)