the most common type of tracheoesophageal anomaliesesophageal atresia(EA)with distal tracheoesophageal fistula(TEF) is the most common(85%) gastrointestinalembryology Mar 30, 2019, 1:33 AM HirotoShishido
urachus and malignancyyolk sac forms the allantois(尿膜)
→allantoins become the urachus(尿膜管)(duct between bladder and umbilicus)
→urachus which fails to involute may increase the risk of infection,malignancy(eg,adenocarcinoma) embryology Mar 30, 2019, 12:36 AM HirotoShishido
Meckel diverticulum characteristicsrules of 2s
2 inches long(about 5cm)
2 feet (61cm) proximal to the ileocecal valve
occurs 2% of the population
2:1=male:female
often occurs 2 years of age(60%)
contain 2 types of epithelium(gastric,pancreatic) gastrointestinalembryology Mar 29, 2019, 4:10 AM HirotoShishido
what causes DiGeorge synddefective development of the third and fourth pharyngeal pouches(第3,4咽頭嚢)→ T lymphocyte immunodeficiency, hypothyroidism embryology Mar 29, 2019, 12:57 AM HirotoShishido
