Jejunoileal atresia

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Type I:
intraluminal diaphragm or web may present with windsock anomaly.
NO MESENTERIC DEFECT
NORMAL LENGTH

Type II
Connected by fibrous atretic cord.
NO MESENTERIC DEFECT
NORMAL LENGTH

Type IIIA
NO FIBROUS CORD
VSHAPED MESENTERIC DEFECT
SHORTENED LENGTH

Type IIIB
bowel wraps around a single perfusing vessel( christmas tree app)
LARGE MESENTERIC DEFECT
SIGNIFICANTLY SHORTENED

Type IV
MULTIPLE DEFECTS

Whereas associated anomalies are found in 30-40% of neonates with duodenal atresias, associated anomalies are found in only 10% of neonates with jejunoileal atresias

There is maternal polyhydramnios

RX
RESECTION AND ANASTOMOSIS
TAPERING ENTEROPLASTy(for shortenede bowel)

From emedicine:

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Intestinal atresia type IIIa. A clamp is applied on the distal bowel, and sodium chloride solution is instilled through a purse-string suture to dilate the intestine and diminish the size discrepancy between the two loops to facilitate the anastomosis. The dotted line marks the area of the resection.

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The proximal dilated pouch is transected in a 90° angle to maximize its vascularity, while the distal intestine is transected obliquely to diminish the size discrepancy between the segments.

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