Averages for San Francisco in January. January San Francisco. Weather Lowdown. January is one of the coldest months in San Francisco, USA and it is also one of the wettest. This month is the rainy season and heavy downpours can occur at any time with a monthâs worth of rain sometimes falling over a couple of days.
When the bile ducts become blocked, bile builds up in the liver, and jaundice (yellow color of the skin) develops due to the increasing levels of bilirubin in the blood. The possible causes of a blocked bile duct include: Cysts of the common bile duct. Enlarged lymp nodes in the porta hepatis. Gallstones.
Bile ducts are drainage pipes that carry bile from the liver to the gallbladder and from the gallbladder to the small intestine. A variety of diseases can affect your bile ducts. All block the bile ducts in some way, which is why the various diseases cause similar symptoms. Gallstones are the most common cause of blocked bile ducts. Stones typically form inside the gallbladder and can block the common bile duct, the drainpipe at the base of the liver. If the duct remains blocked, bilirubin backs up and enters the blood stream.