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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
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.
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.
1 topic, 1 min.
20 topics, 55 min.
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.10 topics, 24 min.
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.4 topics, 11 min.
11 topics, 16 min.
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.26 topics, 1 hr.
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.15 topics, 46 min.
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
Alright, here we have a contrast-enhanced
0:04
CT scan of the abdomen and pelvis.
0:06
Um, again, in that portal venous phase of imaging,
0:08
as we come down, we can already see that the liver
0:10
is a little lower in attenuation than the spleen.
0:12
This is probably due to some degree
0:14
of fatty infiltration of the liver.
0:16
Kind of a common entity, uh, that we see
0:18
frequently in our emergency department.
0:20
And as we progress inferiorly, you can actually
0:23
see a little region here within the right lobe
0:25
of the liver of even decreased attenuation.
0:27
That's also a really common location
0:29
for focal fatty infiltration.
0:31
A location where, um, the fat will even be
0:33
deposited more within a slightly fatty liver.
0:35
So that is within normal limits.
0:37
In patients in this category, but
0:40
oh, look at the right upper quadrant.
0:42
In the porta hepatis, we can see that
0:43
there is a calcified gallstone in a bad
0:46
neighborhood in the neck of the gallbladder.
0:47
That gallbladder is thickened with a
0:50
thickened wall, and there's already peri-
0:52
cystic fluid outlining the gallbladder as well.
0:54
And as we come down, we can see a significant amount
0:57
of pericolic, cystic stranding, and fluid all
1:00
in that region, again, adjacent to the transverse
1:03
colon and coming around the gallbladder fundus.
1:06
Progressing down on the patient,
1:08
we can also see a number of renal cysts.
1:10
That's a pretty common finding in our patient
1:12
population as they age as well, and progressing
1:15
all the way down into the lower quadrant.
1:19
We will come upon what is called a pessary.
1:22
That is actually a device utilized for, uh,
1:25
aging patients in order to stop uterine prolapse.
1:29
So, um, we can look at that again on the coronal
1:31
when we're looking at the coronal images.
1:32
Here are the coronal images.
1:34
You can see that gallstone is just wedged tightly
1:36
in that gallbladder neck, causing problems, causing
1:39
the gallbladder to be distended and obstructed.
1:42
Um, the gallbladder is very angry in appearance
1:46
with the fluid and the pericholecystic stranding.
1:49
But those are the major findings in this case.
1:51
We look at the common bile duct on all CT
1:53
scans to make sure that we don't see anything
1:55
obstructing within the common bile duct.
1:57
We want to make sure the patient hasn't dropped
1:58
a stone, and again, that pessary down in the
2:02
pelvis, if that's what you're concerned about.
2:04
You can always Google that.
2:05
They are extreme in appearance, I have to say.
2:08
Besides that, I don't see any other acute problems.
2:10
This patient is off to general surgery
2:13
and will be going for a cholecystectomy.
Interactive Transcript
0:00
Alright, here we have a contrast-enhanced
0:04
CT scan of the abdomen and pelvis.
0:06
Um, again, in that portal venous phase of imaging,
0:08
as we come down, we can already see that the liver
0:10
is a little lower in attenuation than the spleen.
0:12
This is probably due to some degree
0:14
of fatty infiltration of the liver.
0:16
Kind of a common entity, uh, that we see
0:18
frequently in our emergency department.
0:20
And as we progress inferiorly, you can actually
0:23
see a little region here within the right lobe
0:25
of the liver of even decreased attenuation.
0:27
That's also a really common location
0:29
for focal fatty infiltration.
0:31
A location where, um, the fat will even be
0:33
deposited more within a slightly fatty liver.
0:35
So that is within normal limits.
0:37
In patients in this category, but
0:40
oh, look at the right upper quadrant.
0:42
In the porta hepatis, we can see that
0:43
there is a calcified gallstone in a bad
0:46
neighborhood in the neck of the gallbladder.
0:47
That gallbladder is thickened with a
0:50
thickened wall, and there's already peri-
0:52
cystic fluid outlining the gallbladder as well.
0:54
And as we come down, we can see a significant amount
0:57
of pericolic, cystic stranding, and fluid all
1:00
in that region, again, adjacent to the transverse
1:03
colon and coming around the gallbladder fundus.
1:06
Progressing down on the patient,
1:08
we can also see a number of renal cysts.
1:10
That's a pretty common finding in our patient
1:12
population as they age as well, and progressing
1:15
all the way down into the lower quadrant.
1:19
We will come upon what is called a pessary.
1:22
That is actually a device utilized for, uh,
1:25
aging patients in order to stop uterine prolapse.
1:29
So, um, we can look at that again on the coronal
1:31
when we're looking at the coronal images.
1:32
Here are the coronal images.
1:34
You can see that gallstone is just wedged tightly
1:36
in that gallbladder neck, causing problems, causing
1:39
the gallbladder to be distended and obstructed.
1:42
Um, the gallbladder is very angry in appearance
1:46
with the fluid and the pericholecystic stranding.
1:49
But those are the major findings in this case.
1:51
We look at the common bile duct on all CT
1:53
scans to make sure that we don't see anything
1:55
obstructing within the common bile duct.
1:57
We want to make sure the patient hasn't dropped
1:58
a stone, and again, that pessary down in the
2:02
pelvis, if that's what you're concerned about.
2:04
You can always Google that.
2:05
They are extreme in appearance, I have to say.
2:08
Besides that, I don't see any other acute problems.
2:10
This patient is off to general surgery
2:13
and will be going for a cholecystectomy.
Report
Faculty
Laura L Avery, MD
Assistant Professor of Emergency Radiology Harvard Medical School
Massachusetts General Hosptial
Tags
Infectious
Gastrointestinal (GI)
Gallbladder
Emergency
CT
Body
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