Cellulitis - Phoenix Diagnostic Clinic

Acute infection of the skin involving the subcutaneous tissues
• Staphylococcus aureus / Streptococcus pyogenes
• Diagnostic: clinical (fever, pain, swollen) but nonspecific in early phases
• Immunosupression / immunodeficiency (HIV)

*Role of MR:* → *Treatment:*
Superficial cellulitis versus deep-seated cellulitis	Superficial cellulitis nonsurgical treatment
Deep-seated cellulitis = fasciitis, myositis	Abscess - drainage
Dif dg edema – cellulitis (i.v. contrast)	Necrosis - surgical treatment
Presence of abscesses, necrosis	Deep cellulitis – surgical treatment

100% accuracy in evaluation of cellulitis

A. Rahmouni et al, Radiology 1994

Cellulitis MR Findings

• Thickening of the skin
• Separation and/or septation of subcutaneous fat
• Fluid collections (abscesses, necrosis)
• Thickening of superficial fascia
• Enhancement of subcutaneous fat (dif edema)

M, 38 y. superficial cellulitis and bursitis (staphilococcus aureus).

F, 54 y, superficial cellulitis and superficial
fascial collection

November 4, 2009

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