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
Pediatric Imaging
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.
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
Pediatric Imaging
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.
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
© 2024 Medality. All Rights Reserved.