"T1: central low to intermediate signal"
"T2: central high signal"
"T1 C+ (Gd): peripheral enhancement"
"DWI/ADC: diffusion restriction (increased b=1000 signal and low ADC values)"
"posterior extension to pre-vertebral space, discitis osteomyelitis, epidural abscess"
"group A Streptococcus"
"S. aureus"
"H. influenzae"
"anaerobic organisms, e.g. Bacteroides, Peptostreptococcus, and Fusobacterium"
"M. tuberculosis: in endemic areas or in the immunocompromised"
"S. aureus"
"H. influenzae"
"Capps triad"
"anaerobic organisms, e.g. Bacteroides, Peptostreptococcus, and Fusobacterium"
"inferior extension into the mediastinum resulting in mediastinitis (e.g. via involvement of the danger space, carotid sheath or visceral space)"
Expected headings
"Complications"
"Presentation is variable. In some instances, children present with non-specific symptoms including generalised irritability, fever and reticence to eat. In other cases, features are more pronounced, including drooling, fever, neck swelling, limited range of motion and stridor, and clinically the presentation may be reminiscent of epiglottitis 2,3. This is particularly the case in infants 3. Palpable cervical lymph nodes may also be present 4."
"Presentation is variable. In some instances, children present with non-specific symptoms including generalised irritability, fever and reticence to eat. In other cases, features are more pronounced, including drooling, fever, neck swelling, limited range of motion and stridor, and clinically the presentation may be reminiscent of epiglottitis 2,3. This is particularly the case in infants 3. Palpable cervical lymph nodes may also be present 4."
"symmetric low attenuation purulent fluid filling the retropharyngeal space side-to-side 12; abscess can sometimes be eccentrically limited to one side of the retropharyngeal space due to the presence of a midline raphe 13"
"retropharyngeal effusion: low attenuation fluid filling the retropharyngeal space side-to-side but without peripheral enhancement; can arise in reaction to infection elsewhere in the neck, after radiation therapy or in the context of calcific tendinitis of the longus colli muscle"
"suppurative retropharyngeal lymph node: rim-enhancing lateral retropharyngeal node with central hypoattenuating focus; often responds to medical management/intravenous antibiotics without the need for surgery, particularly if the central hypoattenuating focus is small 11,12"
"inferior extension into the mediastinum resulting in mediastinitis (e.g. via involvement of the danger space, carotid sheath or visceral space)"