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Flashcards in Abdomen Deck (175)
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1

Level of obstruction can be either proximal or distal, in relation to what structure

Ampulla of Vater

2

Most common cause of congenital esophageal obstruction

Esophageal atresia

3

It is the result of abnormal development of the foregut early in gestation, which leads to discontinuity of the esophagus and frequently an associated fistulous connection between the esophagus and the trachea

Esophageal atresia

4

Most common subtype of esophageal atresia/TEF

Complete esophageal atresia with a blind-ending esophageal pouch and distal fistulous connection between the lower portion of the trachea and distal segment of esophagus

5

Occurs due to failure of the normal sequence of rotation of the bowel and mesentery during development

Malrotation

6

Ligament of treitz is normally fixed on what side

Left of midline, at similar level of duodenal bulb

7

Condition in which the base of the mesentery is relatively short and is thus prone to twisting (volvulus)

Malrotation

8

If VOLvulus occurs, the resulting obstruction is typically seen in the

3rd portion of the duodenum

VOL = 3

9

Midgut volvulus can be catastrophic as it involves the

Mesenteric vessels which can result to venous and arterial ischemia of bowel

10

Normally, the 3rd portion of duodenum in the AP view is seen on _______, and on the lateral view it is seen on ______

Cross midline to the left on AP view, located posteriorly just in front of the spine on the lateral view

11

In malrotation, the 3rd portion of duodenum appears

It does not cross the midline and extend anteriorly in the lateral view

12

In malrotation, the ligament of Treitz is located where

Right of midline or may be abnormally low

normally nasa left = edi ngayon nasa right

13

In malrotation, cecum is located where

Either in midline or high in the right upper quadrant

RLQ → RUQ

14

On ct/mri or ultrasound, the 3rd portion of duodenum in malrotation appears

Not passing between the SMA and aorta

15

Small bowel loops and colon in malrotation appears where

Small bowel loops primarily appear on the right side and colon on the left side

16

In malrotation, SMA appears where, and SMV is located where

SMA is in the right
SMV to the left

17

Normally, SMA and SMV are located where

Mimics position of aorta and IVC, SMA on the left and IVC on the right

18

The 3rd portion of duodenum in malrotation with volvulus appears as

Corkscrew appearance or beaking

19

Corrective procedure in malrotation with midgut volvulus

Ladd procedure

20

Etiology of duodenal atresia

During embryologic development, duodenal lumen undergoes occlusion due to normal cellular proliferation and subsequent recanalization. Failure to recanalize is results in duodenal atresia

21

DUOdenal atresia most commonly occurs on what part of the duodenum

Second

22

Treatment for duodenal atresia

Duodenoduodenostomy bypassing the atretic segment

23

Cause of obstruction of the 2nd portion of duodenum when there is abnormal rotation and fusion of the dorsal and ventral bud of pancreas, causing circumferential narrowing of duodenum due to extrinsic compression

Annular pancreas

24

Treatment for annular pancreas

Surgical bypass of the narrowed segment of duodenum

25

Caused by the redundancy of the duodenal mucosa which may result in a circumferential area of relative narrowing or a pouch-like structure (Windsock deformity) that can cause partial duodenal obstruction

Duodenal web

26

3 Treatment for duodenal web

Resection of redundant tissue,
bypass of involved segment, or
endoscopic balloon dilation

27

Appears as a wedge shaped mesenteric defect associated with the atretic segment of small bowel

Small bowel atresia

28

This finding indicates that there has been an in utero bowel perforation, with spillage of meconium into the peritoneal cavity, resulting in inflammation and resultant calcification (meconium peritonitis). Occasionally, a discrete peripherally calcified cystic mass called a meconium pseudocyst may be present

Peritoneal calcifications

29

In distal ileal atresia, colon appears

Small in caliber “microcolon” due to lack of contiguity of the GI tract in utero which prevents normal colonic development by obstructing the normal flow of intestinal secretions into the colon

30

If small bowel atresia is present in the more proximal jenunal or ileal segment, the appearance of the colon is

Normal