Development of Midgut Flashcards
Borders of Midgut
from ampulla of vater to junction of 2/3rd and 1/3rd of transverse colon
Physiological herniation of Midgut occurs by
6th week
Physiological herniation of Midgut disappears by
10th week
Midgut is divided by
SMA
Pre-arterial segment of Midgut contains
Distal Duodenum
jejunum
Ileum
Post-arterial segment of Midgut contains
terminal ileum Ascending colon appendix caecum 2/3rd of Transverse colon
What is Vitellointestinal duct
Herniation of Midgut in to Yolksac
Persistence of part of Vitellointestinal duct is
Meckel’s Diverticulum
Meckel’s Diverticulum - Rule of 2
2% of population
2 feet from ileocecal valve
2 inch long
Enterocystoma
Vitelline cyst
Fecal discharge at umbilicus
Vitelline fistula
persistence of entire vitellointestinal duct
vitelline fistula.
Fecal discharge at umbilicus
How many rotations of Midgut
3 - 90 degree rotations anti clockwise
Location of caecum after 3rd rotation of Midgut
below liver
Non rotation of Midgut
only first rotion happens.
Small intestine on Right side
Large intestine on Left side
Mixed rotation of Midgut
two normal rotations
Ladd’s band
Sub-pyloric caecum
Mid gut colvulus
Ladd’s band
Sub-pyloric caecum
Mid gut colvulus
seen in
Mixed rotation of Midgut
Reverse rotation of Midgut
SMA compressing transverse colon
SMA compressing transverse colon is seen in
Reverse rotation of Midgut
Failure of reduction of Physiological hernia
Omphalocele
Omphalocele
Failure of reduction of Physiological hernia
Sac - present
Liver, intestine are present outside
Associated with other congenital anomalies
Hernia at the site of regression of Right umbilical vein
Gastroschisis
Gastroschisis
Hernia at the site of regression of Right umbilical vein
Sac absent
Only intestine outside
MC feature - Intestinal obstruction
not Associated with other congenital anomalies
