Spontaneous pneumothorax followed by reversed halo sign in immunocompromised patient with pulmonary mucormycosis

•Spontaneous pneumothorax; in pulmonary mucormycosis that followed by reversed halo sign.•Pneumothorax in pulmonary mucormycosis on day 0.•Reversed halo sign on day +9.•Histhopathology of mucormycosis(rhinoorbital mucormycosis).•PNS CT scan that shows soft tissue density with orbital extension.

Mucormycosis, an invasive fungus with a variety of clinical presentation, is a devastating infection in immunocompromised host. Here an unusual case of pulmonary mucormycosis is introduced in an immunodeficient patient in which pneumothorax was followed by reversed halo sign (RHS). The clinicians, who visit immunocompromised persons with pneumothorax, should be considerate to take immediate imaging and pathologic measures to confirm or reject mucormycosis.