Figure 1.

Pulmonary mucormycosis appearing as a mass with the halo sign on computerized tomography (CT) in 24-year-old woman after autologous hematopoietic stem cell transplantation for rapidly progressive diffuse cutaneous systemic sclerosis. A, CT scan on day 6, showing a bilateral parenchymatous condensation within the right upper lobe the reverse halo sign. B, CT scan on day 20 showing showed a nearly complete regression of bilateral parenchymatous condensation and disappearance of the reverse halo sign.