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Orbital cellulitis related to mucormycosis (A–C) and bacterial infection (D–F). Orbital cellulitis related to mucormycosis (A–C) and bacterial infection.

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Presentation on theme: "Orbital cellulitis related to mucormycosis (A–C) and bacterial infection (D–F). Orbital cellulitis related to mucormycosis (A–C) and bacterial infection."— Presentation transcript:

1 Orbital cellulitis related to mucormycosis (A–C) and bacterial infection (D–F).
Orbital cellulitis related to mucormycosis (A–C) and bacterial infection (D–F). A, Axial T1-weighted fat-suppressed postcontrast image shows an opacified right maxillary sinus and extensive enhancement throughout the infratemporal fossa tissues, involving the pterygoid muscles (arrow). B, Axial exponential ADC image shows low intensity throughout these tissues (arrow), indicating relatively increased ADC, best appreciated by comparison with the contralateral side. The area of restricted diffusion behind the right maxillary sinus represents abscess. C, Axial exponential ADC image through the orbit shows restricted diffusion within the infarcted posterior right optic nerve (arrow). D, Axial T1-weighted fat-suppressed postcontrast image shows intense enhancement within the periorbital soft tissue (arrow). E, Axial T2-weighted image shows moderate hyperintensity relative to extraocular muscle. F, Axial exponential ADC image slightly lower shows increased ADC throughout the region of nonspecific enhancement (arrow). Restricted diffusion is seen within an abscess (a), which corresponds with a nonenhancing T1 hypointense area. Diffusion is not restricted within the tissues immediately surrounding the focal abscess. G, Axial T1-weighted fat-suppressed postcontrast image shows no enhancement within an abscess (a), with marked enhancement in the area of cellulitis. R. Kapur et al. AJNR Am J Neuroradiol 2009;30:64-70 ©2009 by American Society of Neuroradiology

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