Congenital choledochal cyst in the biliary system is regarded as uncommon although there is an increase in the number of reported cases.
It is considered to be caused by two factors. weakness of the wall of the. common bile duct in a specific segment and obstruction distal to it congenitally.
As morphological classification, there are 4 types, cystic dilatation, diverticulurn, .choledochocele and, rarely, . multiple diverticulosis.
The condition has the triad of symptoms and signs, abdominal: tumor, pain and jaundice, which were the most important features for diagnosis and is said to occur more often in the female than in the male and more often in children than in adults.
Treatment should be surgical drainage, ie choledochocystoduodenostomy or choledochocystojejunostomy using Roux-enY or Braun technique.
The author presented 6 cases who were treated surgically at the Presbyterian Medical Center in Taegu from Sept. 1965 to Apr. 1972 and analyzed clinically of the 31 cases reported in Korea and observed the following clinical data.
1). 80.6% of cases were under the age of 15 and female (71. 0%) was predominant to male, about 3 times.
2). Frequency of the triad of symptoms and signs were ;in order of abdominal mass 99.3%, abdominal pain 54.8% and jaundice 54.8%.
3). Preoperative diagnosis was made in 58.1%.
4). Surgical procedures used were principally choledochocystoduodenostomy in 22 cases(90.3%), choledochocystojejunostomy in 2 cases and excision of cyst in 2 cases.
5). Mortality was 3.2% (I case).
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