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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.
Continuing Medical Education (State CME)
Complete all of your state CME requirements in one convenient place.
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.
Case Crunch: Rapid Case Review (Free)
Register for free live board reviews.
Dr. Resnick's MSK Conference
Learn directly from the MSK Master himself.
Lower Extremities MRI Conference
Musculoskeletal 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.
Compliance
NewTrack, fulfill, and report on all your radiologists' credentialing and licensing requirements.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
Introduction
Introduction
1 topic, 1 min. of video
Right Upper Quadrant Pain
Right Upper Quadrant Pain
20 topics, 55 min. of video
Normal Anatomy and Basic Ultrasounds: Abdomen and Pelvis
8 m.Cholelithiasis
2 m.Case: Acute Cholecystitis on Ultrasound
2 m.Acute Cholecystitis on Ultrasound
3 m.Case: Acute Cholecystitis on CT
2 m.Acute Cholecystitis on CT
1 m.Case: Cholecystitis With Calcified Stones
3 m.Gallstones on CT
2 m.Case: Tensile Gallbladder Fundus Sign
2 m.Tensile Gallbladder Fundus Sign
2 m.Case: Gangrenous Cholecystitis
2 m.Gangrenous Cholecystitis
2 m.Case: Emphysematous Cholecystitis With Portal Venous Gas Air
2 m.Emphysematous Cholecystitis With Portal Venous Gas Air
4 m.Case: Emphysematous Cholecystitis With Perforation
5 m.Emphysematous Cholecystitis Summary
3 m.Case: Mirizzi Syndrome With Dilated Intrahepatic Bile Ducts
4 m.Mirizzi Syndrome
6 m.Case: Choledocholithiasis
5 m.Choledocholithiasis
4 m.Midline Pain
Midline Pain
10 topics, 24 min. of video
Case: Acute Gallstone Pancreatitis
2 m.Causes of Pancreatitis
4 m.Cases: Pancreatitis Without/With Necrosis
3 m.Revised Atlanta Classification
6 m.Case: Pancreatitis With SMV and Splenic Vein Thrombosis
3 m.Pancreatitis Complication: SMV and Splenic Vein Thrombosis
3 m.Case: Pancreatitis With Pseudoaneurysm of Splenic Artery
2 m.Pancreatitis Complication: Splenic Artery Pseudoaneurysm
2 m.Case: Duodenal Ulcer With Perforation
2 m.Types of Perforated Ulcers
2 m.Lower Quadrant Pain
Lower Quadrant Pain
4 topics, 11 min. of video
Left Lower Quadrant Pain
Left Lower Quadrant Pain
11 topics, 16 min. of video
Case: Classic Diverticulitis
2 m.Diverticulitis
2 m.Case: Diverticulitis With Free Air
2 m.Case: Diverticulitis, Perforated with Abscess
2 m.Diverticulitis: Perforated With Abscess Post Drainage
2 m.Case: Diverticulitis With Colovesical Fistula
2 m.Diverticulitis With Colovesical Fistula
1 m.Case: Diverticulitis With IMV Thrombosis
2 m.Diverticulitis With IMV Thrombosis
2 m.Case: Epiploic Appendagitis
2 m.Epiploic Appendagitis and Omental Infarction
3 m.Bowel Obstruction
Bowel Obstruction
26 topics, 1 hr. of video
Case: Umbilical Hernia
3 m.Obstructing Umbilical Hernias
3 m.Groin Hernias: Introduction
3 m.Case: Indirect Inguinal Hernia
2 m.Inguinal Hernias
2 m.Case: Femoral Hernia
2 m.Case: Obturator Hernia
2 m.Groin Hernias: Summary
3 m.Case: Simple Bowel Obstruction
2 m.Case: High Grade Bowel Obstruction
2 m.Case: Gallstone Ileus
3 m.Gallstone Ileus and Cholecytocolic Fistula
3 m.Case: Closed Loop Small Bowel Obstruction
3 m.Closed Loop Small Bowel Obstruction
5 m.Case: Large Bowel Colonic Obstruction
2 m.Large Bowel Colonic Obstruction
2 m.Case: Perforated Colon From Colon Cancer
3 m.Perforated Colon
4 m.Case: SMA Embolism With Bowel Ischemia
3 m.SMA Embolism
4 m.Case: Mesenteric Vein Thrombosis
3 m.Mesenteric Vein Thrombosis
2 m.Case: Cecal Volvulus
2 m.Cecal Volvulus
4 m.Case: Sigmoid Volvulus
3 m.Sigmoid Volvulus
3 m.Retroperitoneum
Retroperitoneum
15 topics, 46 min. of video
Retroperitoneum
3 m.Case: Ruptured Abdominal Aortic Aneurysm
2 m.Abdominal Aortic Aneurysm Rupture
4 m.Case: Bleeding Angiomyolipoma
3 m.Angiomyolipoma
2 m.Case: Psoas Hematoma
3 m.Retroperitoneal Bleeding
2 m.Case: Renal Stones
3 m.Enhancement Patterns of Kidneys
7 m.Case: Forniceal Rupture
4 m.Forniceal Rupture
2 m.Case: Pyelonephritis
3 m.Pyelonephritis
3 m.Case: Renal Infarcts
3 m.Renal Infarcts
9 m.0:00
Okay, so here we are at diverticulitis.
0:03
It's a very common cause for left lower quadrant pain.
0:05
We see diverticulitis all day
0:06
long thanks to the American diet.
0:08
Much of our population has diverticulosis, which
0:12
gives them increased risk of diverticulitis.
0:15
It's hard to know exactly why diverticulitis occurs.
0:17
There's a lot of different theories.
0:18
Most people say it's probably obstruction of a small
0:20
diverticulum that then becomes inflamed, but there's
0:23
obviously people who have various opinions on that.
0:26
So either way, it is inflammation of the
0:29
colon in the region of diverticulosis,
0:31
resulting from these inflamed diverticula.
0:34
Usually what we'll see is inflammation
0:36
at the descending or sigmoid junction.
0:38
Now, it can happen anywhere.
0:39
There are diverticula, and some patients have
0:41
unfortunately diverticulosis throughout their colon.
0:43
Some even have it into their jejunum.
0:44
I've seen small bowel diverticulosis,
0:46
but most frequently patients have
0:48
descending or sigmoid junction locations.
0:50
And in the sigmoid colon, you may
0:52
see this peri-colonic fat stranding.
0:54
It's usually disproportionate amounts
0:56
of stranding to wall thickening.
0:58
So that's kind of how you can differentiate
0:59
whether a patient has colitis or diverticulitis.
1:03
You kind of have to make that judgment of, do I think
1:05
this is the diverticulum first or the colon first?
1:07
It's that chicken or egg decision,
1:09
but frequently it's the diverticulum.
1:11
You always want to look for if there's
1:13
perforation or an abscess formation.
1:15
In this case, there was no perforation
1:16
or abscess because that would bring
1:18
that up to a complicated diverticulitis.
1:20
And in this case, we are running in
1:21
the uncomplicated diverticulitis.
Diverticulitis
HIDEInteractive Transcript
0:00
Okay, so here we are at diverticulitis.
0:03
It's a very common cause for left lower quadrant pain.
0:05
We see diverticulitis all day
0:06
long thanks to the American diet.
0:08
Much of our population has diverticulosis, which
0:12
gives them increased risk of diverticulitis.
0:15
It's hard to know exactly why diverticulitis occurs.
0:17
There's a lot of different theories.
0:18
Most people say it's probably obstruction of a small
0:20
diverticulum that then becomes inflamed, but there's
0:23
obviously people who have various opinions on that.
0:26
So either way, it is inflammation of the
0:29
colon in the region of diverticulosis,
0:31
resulting from these inflamed diverticula.
0:34
Usually what we'll see is inflammation
0:36
at the descending or sigmoid junction.
0:38
Now, it can happen anywhere.
0:39
There are diverticula, and some patients have
0:41
unfortunately diverticulosis throughout their colon.
0:43
Some even have it into their jejunum.
0:44
I've seen small bowel diverticulosis,
0:46
but most frequently patients have
0:48
descending or sigmoid junction locations.
0:50
And in the sigmoid colon, you may
0:52
see this peri-colonic fat stranding.
0:54
It's usually disproportionate amounts
0:56
of stranding to wall thickening.
0:58
So that's kind of how you can differentiate
0:59
whether a patient has colitis or diverticulitis.
1:03
You kind of have to make that judgment of, do I think
1:05
this is the diverticulum first or the colon first?
1:07
It's that chicken or egg decision,
1:09
but frequently it's the diverticulum.
1:11
You always want to look for if there's
1:13
perforation or an abscess formation.
1:15
In this case, there was no perforation
1:16
or abscess because that would bring
1:18
that up to a complicated diverticulitis.
1:20
And in this case, we are running in
1:21
the uncomplicated diverticulitis.
Report
Faculty
Laura L Avery, MD
Assistant Professor of Emergency Radiology Harvard Medical School
Massachusetts General Hosptial
Tags
Large Bowel-Colon
Infectious
Gastrointestinal (GI)
Emergency
CT
Body
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