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
We are ready to discuss the lesions
0:03
of the orbital appendages.
0:06
By the orbital appendages, we are referring to the lacrimal
0:09
gland and the lacrimal sac, and lacrimal duct.
0:13
The lacrimal gland is the source of the tears that flow across the eye.
0:19
So from the lacrimal gland,
0:21
we have the tears that flow across the eye
0:24
to get to the region of the lacrimal sac and the lacrimal duct.
0:30
We have two components here.
0:33
One is the superior and one is the inferior canaliculi,
0:38
and the canaliculi open into the lacrimal sac by the sinus of Mayer.
0:43
The lacrimal sac is seen near the punctum of the eye and is
0:48
the uppermost portion of the lacrimal duct and sac apparatus.
0:54
From the lacrimal sac, we enter the nasal lacrimal duct
0:59
via the valves of Krause.
1:02
The tears then flow downward through the nasal lacrimal duct
1:07
and come to the inferior turbinate.
1:09
At which point, they exit via the valve of Hasner.
1:14
This is epithelial-lined tissue along the lacrimal duct,
1:20
whereas the lacrimal gland is said to be
1:23
effectively like a salivary gland.
1:25
And so the diseases of the lacrimal gland simulate those of
1:29
the salivary glands, whereas the diseases of the nasal
1:33
lacrimal sac and duct simulate the parotid duct.
Anatomy Review - Nasolacrimal system
HIDEInteractive Transcript
0:00
We are ready to discuss the lesions
0:03
of the orbital appendages.
0:06
By the orbital appendages, we are referring to the lacrimal
0:09
gland and the lacrimal sac, and lacrimal duct.
0:13
The lacrimal gland is the source of the tears that flow across the eye.
0:19
So from the lacrimal gland,
0:21
we have the tears that flow across the eye
0:24
to get to the region of the lacrimal sac and the lacrimal duct.
0:30
We have two components here.
0:33
One is the superior and one is the inferior canaliculi,
0:38
and the canaliculi open into the lacrimal sac by the sinus of Mayer.
0:43
The lacrimal sac is seen near the punctum of the eye and is
0:48
the uppermost portion of the lacrimal duct and sac apparatus.
0:54
From the lacrimal sac, we enter the nasal lacrimal duct
0:59
via the valves of Krause.
1:02
The tears then flow downward through the nasal lacrimal duct
1:07
and come to the inferior turbinate.
1:09
At which point, they exit via the valve of Hasner.
1:14
This is epithelial-lined tissue along the lacrimal duct,
1:20
whereas the lacrimal gland is said to be
1:23
effectively like a salivary gland.
1:25
And so the diseases of the lacrimal gland simulate those of
1:29
the salivary glands, whereas the diseases of the nasal
1:33
lacrimal sac and duct simulate the parotid duct.
Report
Description
Faculty
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
Tags
Orbit
Neuroradiology
Neuro
MRI
Head and Neck
CT
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