A case of mistaken identity: of the orbit.

The authors describe a rare presentation of invasive fungal rhino-orbital cellulitis caused by in an immunocompetent child. The patient was initially diagnosed and treated as , which has a high mortality rate and is primarily seen in immunocompromised patients. Though of the same order, Mucorales, the families and , may be difficult to differentiate on histologic examination and must be distinguished by fungal culture and speciation. Our patient responded well to sino-orbital debridement and systemic treatment with amphotericin and posaconazole.