Choledochal cyst in adults is a rare condition. The present study desc
ribes our experience with this abnormality of the biliary tree. During
a 16-year period (1978-1993) eight adults with type I choledochal cys
t were treated surgically in our departments. They were 4 men and 4 wo
men with a mean age of 38.9 years (range 20-84). Symptoms, clinical fi
ndings and abnormalities in laboratory investigations included pain in
all patients, history of cholangitis (n = 3), cholangitis (n = 2), ac
ute pancreatitis (n = 1), palpable mass (n 2), abdominal tenderness (n
= 4), leucocytocis (n = 2), and increased levels of serum total bilir
ubin (n = 4), SGOT (n = 2), and serum alkaline phosphatase (n 4). Diag
nosis was established by intravenous cholangiography in one case, by C
T-scanning in one, by ultrasonography in 5 and by intraoperative chola
ngiography in one. All the patients were treated surgically. Three of
them underwent a Roux-en-Y choledochocystoduodenostomy and one a chole
dechocystoduodenostomy. The other 4 patients were treated with cyst ex
cision and Roux-en-Y hepaticojejunostomy. There were no deaths among o
ur patients. The mean follow-up period was 6.7 years (range 1-17). So
far, five episodes of mild ascending cholangitis have occurred in the
patient treated with choledochocystoduodenostomy. One patient in whom
a Roux-en-Y choledochocystojejunostomy was performed had 2 episodes of
right upper quadrant colic pain and one episode of cholangitis. Both
these patients were treated conservatively. The other 6 patients had n
o episodes of pain cholangitis or jaundice. In conclusion, the primary
treatment of choledochal cyst type I is the excision of the cyst with
Roux-en-Y hepaticojejunostomy. The Roux-en-Y choledochocystojejunosto
my is indicated in cases where, for various reasons, the cyst can not
be safely removed.