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Training Collections
Library Memberships
On-demand course library with video lectures, expert case reviews, and more
Fellowship Certificate™ Programs
Practice-focused training programs designed to help you gain experience in a specific subspecialty area.
Ultimate Learning Pass
Unlock access to our full Course Library and all self-paced Fellowships.
Noon Conference (Free)
Get access to free live lectures, every week, from top radiologists.
Case of the Week (Free)
Get a free weekly case delivered right to your inbox.
Dr. Resnick's MSK Conference
Learn directly from the MSK Master himself.
Lower Extremities MRI Conference
Musculoskeletal Imaging
Emergency Imaging
PET Imaging
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For Training Programs
Supplement your training program with case-based learning for residents, registrars, fellows, and more.
For Private Practices
Upskill in high growth, advanced imaging areas.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
21 topics, 34 min.
Introduction to ED Practice Cases
2 m.Wk 1, Case 1 - Practice
Wk 1, Case 1 - Review
2 m.Wk 1, Case 2 - Practice
Wk 1, Case 2 - Review
3 m.Wk 1, Case 3 - Practice
Wk 1, Case 3 - Review
11 m.Wk 1, Case 4 - Practice
Wk 1, Case 4 - Review
6 m.Wk 1, Case 5 - Practice
Wk 1, Case 5 - Review
2 m.Wk 1, Case 6 - Practice
Wk 1, Case 6 - Review
4 m.Wk 1, Case 7 - Practice
Wk 1, Case 7 - Review
2 m.Wk 1, Case 8 - Practice
Wk 1, Case 8 - Review
3 m.Wk 1, Case 9 - Practice
Wk 1, Case 9 - Review
4 m.Wk 1, Case 10 - Practice
Wk 1, Case 10 - Review
2 m.20 topics, 35 min.
Wk 2, Case 11 - Practice
Wk 2, Case 11 - Review
10 m.Wk 2, Case 12 - Practice
Wk 2, Case 12 - Review
3 m.Wk 2, Case 13 - Practice
Wk 2, Case 13 - Review
3 m.Wk 2, Case 14 - Practice
Wk 2, Case 14 - Review
2 m.Wk 2, Case 15 - Practice
Wk 2, Case 15 - Review
10 m.Wk 2, Case 16 - Practice
Wk 2, Case 16 - Review
2 m.Wk 2, Case 17 - Practice
Wk 2, Case 17 - Review
1 m.Wk 2, Case 18 - Practice
Wk 2, Case 18 - Review
2 m.Wk 2, Case 19 - Practice
Wk 2, Case 19 - Review
3 m.Wk 2, Case 20 - Practice
Wk 2, Case 20 - Review
4 m.20 topics, 40 min.
Wk 3, Case 21 - Practice
Wk 3, Case 21 - Review
8 m.Wk 3, Case 22 - Practice
Wk 3, Case 22 - Review
4 m.Wk 3, Case 23 - Practice
Wk 3, Case 23 - Review
9 m.Wk 3, Case 24 - Practice
Wk 3, Case 24 - Review
2 m.Wk 3, Case 25 - Practice
Wk 3, Case 25 - Review
6 m.Wk 3, Case 26 - Practice
Wk 3, Case 26 - Review
2 m.Wk 3, Case 27 - Practice
Wk 3, Case 27 - Review
3 m.Wk 3, Case 28 - Practice
Wk 3, Case 28 - Review
4 m.Wk 3, Case 29 - Practice
Wk 3, Case 29 - Review
3 m.Wk 3, Case 30 - Practice
Wk 3, Case 30 - Review
5 m.20 topics, 39 min.
Wk 4, Case 31 - Practice
Wk 4, Case 31- Review
2 m.Wk 4, Case 32 - Practice
Wk 4, Case 32 - Review
7 m.Wk 4, Case 33 - Practice
Wk 4, Case 33 - Review
3 m.Wk 4, Case 34 - Practice
Wk 4, Case 34 - Review
5 m.Wk 4, Case 35 - Practice
Wk 4, Case 35 - Review
5 m.Wk 4, Case 36 - Practice
Wk 4, Case 36 - Review
5 m.Wk 4, Case 37 - Practice
Wk 4, Case 37 - Review
3 m.Wk 4, Case 38 - Practice
Wk 4, Case 38 - Review
6 m.Wk 4, Case 39 - Practice
Wk 4, Case 39 - Review
3 m.Wk 4, Case 40 - Practice
Wk 4, Case 40 - Review
5 m.20 topics, 41 min.
Wk 5, Case 41 - Practice
Wk 5, Case 41 - Review
6 m.Wk 5, Case 42 - Practice
Wk 5, Case 42 - Review
8 m.Wk 5, Case 43 - Practice
Wk 5, Case 43 - Review
2 m.Wk 5, Case 44 - Practice
Wk 5, Case 44 - Review
3 m.Wk 5, Case 45 - Practice
Wk 5, Case 45 - Review
7 m.Wk 5, Case 46 - Practice
Wk 5, Case 46 - Review
3 m.Wk 5, Case 47 - Practice
Wk 5, Case 47 - Review
2 m.Wk 5, Case 48 - Practice
Wk 5, Case 48 - Review
6 m.Wk 5, Case 49 - Practice
Wk 5, Case 49 - Review
4 m.Wk 5, Case 50 - Practice
Wk 5, Case 50 - Review
6 m.Interactive Transcript
Report
Report
EXAM: CT ORBIT W/ CONTRAST COMPLEX
INDICATION: Left facial swelling and pain with eye movement; limited Left eye abduction on exam; concern for orbital vs. preseptal cellulitis
TECHNIQUE: Contrast-enhanced helical CT images were obtained of the orbits with multiplanar reformations.
COMPARISONS: None
FINDINGS:
There is a subperiosteal phlegmon versus abscess involving the medial left orbit measuring approximately 14 x 9 x 4 mm (anterior-posterior, craniocaudal, transverse), associated with contiguous spread of inflammatory changes arising from the opacified left ethmoid air cells. There is moderate mucosal thickening also seen within the left maxillary sinus.
The medial rectus muscle is displaced laterally by the subperiosteal collection and contacts the midportion of the intraorbital left optic nerve. There is inflammatory stranding involving the medial rectus and superior oblique extraocular muscles, as well as the adjacent extraconal and intraconal fat. The optic nerve/sheath complex maintains normal caliber and attenuation. The left ocular globe is normal in appearance. There is mild preseptal periorbital soft tissue swelling mostly along the infraorbital rim.
The left superior ophthalmic vein and cavernous sinuses are normal in appearance.
There is asymmetric thinning of the left lateral lamella, without frank evidence of focal dehiscence of the anterior cranial fossa floor or evidence of an intracranial subperiosteal/epidural collection.
The brain demonstrates normal enhancement. There is no hydrocephalus.
The right orbital structures are normal in appearance.
IMPRESSION:
1. Medial left orbital cellulitis as detailed above with a subperiosteal phlegmon/abscess along the medial left orbital wall, in keeping with contiguous spread of inflammatory changes from the adjacent opacified ethmoid air cells. There is involvement of the medial rectus and superior oblique muscles and contact with the optic nerve.
2. Asymmetric thinning of the left lateral lamella along the floor of the anterior cranial fossa adjacent to the inflamed ethmoid air cells. Although no intracranial collection or focal inflammatory changes seen, cannot exclude intracranial spread of inflammation. Further evaluation could be obtained with an MRI of the brain.
Key Images
Faculty
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
Tags
Orbit
Neuroradiology
Infectious
Head and Neck
CT
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