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Wk 2, Case 1 - Review

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This is Pediatrics week 2 case number

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one and the diagnosis for this case is

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necrotizing enterocolitis.

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Now as you know, necrotizing enterocolitis or neck is

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a bacterial infection of the bowel.

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Typically the small bowel of newborns and

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especially children born

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prematurely. So it's those patients,

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who are

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Quite premature whose bowel is especially at

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risk and this is a KUB radiograph, which

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is been performed on a four week old.

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And we can see that there's a suction catheter

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that courses down the midline and terminates over the left

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Hemi abdomen but more importantly we can

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see multiple areas of Interest throughout

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these Loops of bowel in

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the left Hemi abdomen.

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As you can see me outlining here, but also over in

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the right Hemi abdomen and what we're

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actually seeing are abnormal Lucy

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some of which appear almost bubbly and

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some of which are quite linear and follow the expected Contour

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of the bowel wall.

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And this is air but it's not intraluminal air

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as we would like to see in bowel. It

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is submucosal air. So the infection by

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the bacteria into the bowel wall causes necrosis

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of the bow wall and

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air dissects under the mucosal layer

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of the bowel.

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And into the muscularis and

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into eventually the mesentery of

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the bowel and that gas can finally dissect into

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the veins of the mesentery all

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the way back through the mesentery veins to the portal vein

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and you can find loosen sees in

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the liver of portal Venus gas. This is

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a very concerning finding and when you have extensive linear

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Lucy's throughout the bowel as we see

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here that bowel is at risk for perforation perforation,

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of course would give us free intra peritoneal

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air and here we have a lateral decubitus film

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a left lateral decubitus film. We

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perform radiographic Imaging in this position in

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the hope that air will rise to the non-dependent side of

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the abdomen and would reveal itself. In this

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case. We don't see free and prepare to Neil air, but this patient is

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at high risk, and we need to continue to

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monitor them radiographically to evaluate for

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that as soon as we see it. Most likely they'll be

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going

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Surgery because they have necrotic bowel.

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Even on this lateral decubitus film. We can see abnormal

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lucencies circumferentially surrounding

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this piece of bowel here

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and elsewhere in the abdomen on both sides.

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So the key things to be aware of is Are there specific radiographic

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signs of necrotizing enterocolitis submucosal

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pneumatosis portal

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venous gas, or worst of all perforated bowel

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leading to free and repair tineal air.

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But just because we don't have those findings doesn't

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mean the patient doesn't have necrotizing intro

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colitis. So the thing to be mindful of is the

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bowel gas pattern. Is it normal? Does it

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look abnormally distended to the loops of bowel hold their

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same exact position and shape over multiple days.

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These are concerning signs not quite specific

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signs. So what we see here is the

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neumatosis intestinalis specific for this

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infection, and that's the end of the case.

Report

EXAM: Abdominal radiograph (X-ray)

INDICATION: 4-week-old low birth weight female, born prematurely, with abdominal distention.

TECHNIQUE: Frontal abdominal radiograph was obtained in supine position.

FINDINGS:

There are extensive linear lucencies along the bowel wall seen in the right and left hemiabdomen here. The bowel gas pattern is nonobstructive. A suction catheter terminates over the left upper quadrant of the abdomen, likely within the gastric body. There is no portal venous gas. Supine positioning limits evaluation for free intraperitoneal air.

IMPRESSIONS:

1. Extensive pneumatosis intestinalis, without visualized portal venous gas.
2. Recommend follow-up radiograph in left lateral decubitus position, to further evaluate for small volume free intraperitoneal air.

Case Discussion

Faculty

Brandon P Brown, MD, MA, FAAP

Director of Fetal and Perinatal Imaging

Indiana University School of Medicine

Tags

X-Ray (Plain Films)

Pediatrics

Nuclear Medicine

Gastrointestinal (GI)