"Rarely performed, as not usually necessary. Like CT, it will identify a subperiosteal abscess as:"
"T1: low signal"
"T2: high signal"
"DWI/ADC: diffusion restriction"
"T2 FLAIR: high signal"
"DWI/ADC: diffusion restriction in the affected globe"
"It comprises of three main clinical entities with the most important distinction between that of orbital and periorbital cellulitis:"
"It comprises of three main clinical entities with the most important distinction between that of orbital and periorbital cellulitis:"
"periorbital cellulitis (preseptal cellulitis) is limited to the soft tissues anterior to the orbital septum 1"
"orbital cellulitis (postseptal cellulitis) extends posteriorly to the orbital septum 1"
"Periorbital cellulitis often results from contiguous spread of an infection of the face, teeth, or ocular adnexa. Orbital cellulitis typically occurs as an extension of paranasal sinusitis 1, frequently from the ethmoidal cells through the lamina papyracea 7. Endophthalmitis is most commonly secondary to ocular surgery or penetrating injury."
"Periorbital cellulitis often results from contiguous spread of an infection of the face, teeth, or ocular adnexa. Orbital cellulitis typically occurs as an extension of paranasal sinusitis 1, frequently from the ethmoidal cells through the lamina papyracea 7. Endophthalmitis is most commonly secondary to ocular surgery or penetrating injury."
"Periorbital cellulitis often results from contiguous spread of an infection of the face, teeth, or ocular adnexa. Orbital cellulitis typically occurs as an extension of paranasal sinusitis 1, frequently from the ethmoidal cells through the lamina papyracea 7. Endophthalmitis is most commonly secondary to ocular surgery or penetrating injury."
"Periorbital cellulitis often results from contiguous spread of an infection of the face, teeth, or ocular adnexa. Orbital cellulitis typically occurs as an extension of paranasal sinusitis 1, frequently from the ethmoidal cells through the lamina papyracea 7. Endophthalmitis is most commonly secondary to ocular surgery or penetrating injury."
"MRI may occasionally have a role in diagnosing endophthalmitis since the presentation can often be non-specific. Key findings include:"
"Periorbital cellulitis is treated with oral antibiotics. Orbital cellulitis is treated with intravenous antibiotics. However, if a subperiosteal abscess is present, surgical drainage may be necessary 1."
"Periorbital cellulitis is treated with oral antibiotics. Orbital cellulitis is treated with intravenous antibiotics. However, if a subperiosteal abscess is present, surgical drainage may be necessary 1."
"Diffuse soft-tissue thickening and areas of enhancement anterior to the orbital septum are seen in periorbital cellulitis. It is very difficult to differentiate between preseptal oedema and periorbital cellulitis on CT 4."
Expected headings
"Periorbital cellulitis"
"Orbital cellulitis"
"Endophthalmitis"
"Complications"
"Differential diagnoses"
"Urgent imaging is indicated to assess the anatomic extent of disease, including postseptal, cavernous sinus and intracranial involvement; evaluate for sources of contiguous spread, e.g. sinusitis or trauma; and identify orbital abscesses that require exploration and drainage 3. CT is the imaging investigation of choice as it is:"
"Urgent imaging is indicated to assess the anatomic extent of disease, including postseptal, cavernous sinus and intracranial involvement; evaluate for sources of contiguous spread, e.g. sinusitis or trauma; and identify orbital abscesses that require exploration and drainage 3. CT is the imaging investigation of choice as it is:"