The function of the gallbladder is to store bile, a fluid that helps with digestion. This muscular organ also concentrates and releases bile into the digestive system. When bile is needed, the ...

Acute cholecystitis occurs when a gallstone becomes lodged within the cystic duct, leading to gallbladder inflammation. In addition to the typical pain (biliary colic) of having a gallstone, a person ...

Help us make Medscape the best clinical resource possible. Please use this form to submit your questions or comments on how to make this resource center more useful to clinicians.

Back pain often happens because something is off in the way your spinal joints, muscles, discs, and nerves fit together and move. Nighttime back pain is a special type of lower back pain that ...

N1 Single lymph node metastasis, 2 cm or less in greatest dimension N1 Single regional lymph node metastasis in the true pelvis (hypogastric, obturator, external iliac or presacral lymph node) N2 ...

Blood is transported to the kidney through the renal artery. The blood is filtered at a high pressure and the kidney selectively reabsorbs any useful materials such as glucose, salt ions and water.