Training Collections
Musculoskeletal Imaging
Emergency Imaging
PET Imaging
Pediatric Imaging
Training Collections
Musculoskeletal Imaging
Emergency Imaging
PET Imaging
Pediatric Imaging
Lesson
Orbital Imaging Protocols
4 topics, 10 min.
Lesson
Orbit Anatomy
10 topics, 19 min.
Lesson
Case Review - Ocular Pathology
17 topics, 1 hr. 11 min.
Anterior Globe Rupture with Laterally Dislocated Cataract
4 m.Foreign Body in Globe
4 m.Wood Foreign Body and Ocular Hypotony
2 m.Hemmorhage in Both Chambers, Open Globe
3 m.Staphyloma
4 m.Persistent Hyperplastic Primary Vitreous (PHPV)
5 m.Retinal Detachment
3 m.Retinoblastoma on CT
4 m.Retinoblastoma on MRI
9 m.Bilateral Retinoblastoma
7 m.Ocular Pathology - Review
11 m.Endophthalmitis
3 m.PHPV Review, Coloboma, and Staphyloma
5 m.Phthisis Bulbi, Macrophthalmia, and Microphthalmia
4 m.Ocular Calcification
4 m.Retinoblastoma - Review
5 m.Choroidal Melanoma
3 m.Lesson
Case Review - Intraconal Pathology
15 topics, 1 hr. 8 min.
Intraconal, Conal and Extraconal Anatomy
1 m.Intraconal Hemangioma
5 m.Venous Vascular Malformation
3 m.Optic Nerve Glioma, NF1
4 m.Optic pathway glioma (pilocytic astrocytoma)
4 m.Optic Neuritis, Multiple Sclerosis
6 m.Optic Neuritis, Multiple Sclerosis (2)
7 m.Neuromyelitis Optica Spectrum Disorder
5 m.Neuromyelitis Optica With Spinal Cord Involvement
3 m.Optic Nerve Sheath Meningioma
5 m.Bilateral Optic Neuritis, Leukemia
6 m.Intraconal Pathology - Review
11 m.Optic Neuritis - Review
5 m.Optic Nerve Glioma - Review
4 m.Optic Nerve Sheath Meningioma - Review
6 m.Lesson
Case Review - Conal Lesions
5 topics, 16 min.
Lesson
Case Review - Extraconal Injuries and Abnormalities
18 topics, 55 min.
Extraconal Pathology - Introduction
1 m.Periorbital Cellulitis & Abscess
4 m.Type 3 Orbital Infection
3 m.Solitary Fibrous Tumor
4 m.Langerhans Cell Histiocytosis
2 m.Juvenile Ossifying Fibroma
2 m.Perineural Spread of Squamous Cell Carcinoma
5 m.Proptosis from Extraosseous Extension of Prostate Metastasis
3 m.Orbital Floor Fracture
5 m.Orbital Floor Fracture with Muscle/Fat Herniation
4 m.Orbital Floor Fracture: Status Post Repair
2 m.Bilateral Orbital Fracture Repair
2 m.Periorbital Cellulitis - Review
5 m.Orbital Pseudotumor - Review
3 m.Orbital Wall Abnormalities - Review
3 m.Orbital Fracture - Review
7 m.Giant Cell Reparative Granuloma
3 m.Granulomatous Sinusitis with IgG4-related Ophthalmic Disease
4 m.Lesson
Case Review - Orbital Appendage Pathology
6 topics, 19 min.
0:00
The lacrimal gland is the second of the orbital
0:04
appendages after the lacrimal sac.
0:07
The lacrimal gland may be involved by any number of
0:10
diseases, and we usually separate them into epithelial
0:14
lesions, versus lymphoproliferative lesions
0:18
versus congenital lesions.
0:21
Let's start with the lymphoproliferative lesions
0:24
and/or granulomatous diseases. In this case,
0:27
we have a patient who has sarcoidosis.
0:30
And what I see, in the evaluation of this patient,
0:33
is enlargement of the left lacrimal gland,
0:37
compared to the normal position and size of the right
0:41
lacrimal gland.
0:42
It has heterogeneous density to it.
0:46
This is noted here,
0:47
laterally in the left side of the orbit.
0:52
Sarcoidosis most commonly affects the uveal tract, which,
0:56
as you recall, includes the ciliary body, the iris,
1:00
and the choroid.
1:01
However, the next most common involved organ of
1:06
the orbit is the lacrimal gland.
1:08
Sarcoidosis may also affect the extraocular muscles and
1:12
cause enlargement, and it also may cause sinusitis.
1:16
And therefore, involvement of the extraconal space.
1:21
You note that, in this case, the inflammation from the
1:25
lacrimal gland extends to the superior
1:28
orbit and into the intraconal space.
1:31
This is another of the complications of sarcoidosis in the orbit,
1:35
where one can have infiltration of the retrobulbar fat.
Sarcoidosis of the Lacrimal Gland
HIDEInteractive Transcript
0:00
The lacrimal gland is the second of the orbital
0:04
appendages after the lacrimal sac.
0:07
The lacrimal gland may be involved by any number of
0:10
diseases, and we usually separate them into epithelial
0:14
lesions, versus lymphoproliferative lesions
0:18
versus congenital lesions.
0:21
Let's start with the lymphoproliferative lesions
0:24
and/or granulomatous diseases. In this case,
0:27
we have a patient who has sarcoidosis.
0:30
And what I see, in the evaluation of this patient,
0:33
is enlargement of the left lacrimal gland,
0:37
compared to the normal position and size of the right
0:41
lacrimal gland.
0:42
It has heterogeneous density to it.
0:46
This is noted here,
0:47
laterally in the left side of the orbit.
0:52
Sarcoidosis most commonly affects the uveal tract, which,
0:56
as you recall, includes the ciliary body, the iris,
1:00
and the choroid.
1:01
However, the next most common involved organ of
1:06
the orbit is the lacrimal gland.
1:08
Sarcoidosis may also affect the extraocular muscles and
1:12
cause enlargement, and it also may cause sinusitis.
1:16
And therefore, involvement of the extraconal space.
1:21
You note that, in this case, the inflammation from the
1:25
lacrimal gland extends to the superior
1:28
orbit and into the intraconal space.
1:31
This is another of the complications of sarcoidosis in the orbit,
1:35
where one can have infiltration of the retrobulbar fat.
Report
Description
Faculty
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
Tags
Orbit
Non-infectious Inflammatory
Neuroradiology
Neuro
Head and Neck
CT
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