are inherited muscle diseases that cause progressive weakness over time.

is a genetic muscle disorder causing progressive weakness, heart and breathing problems.

is an early, noninvasive breast cancer confined to the milk ducts.

causes food to move too quickly from the stomach into intestine.

is a birth defect that blocks part of the small intestine.

is a noncancerous growth in the first part of the small intestine.

is a rare duodenal tumor that makes excess gastrin and stomach acid.

is a rare tumor in the first part of the small intestine.

blocks food from passing normally from the stomach into the intestines.

is a rare hormone-producing tumor that usually develops in the duodenum.

is a painful duodenal sore, usually caused by H. pylori infection.

is inflammation of the first part of the small intestine.

is the backflow of bile and digestive juices into the stomach.

is a rare cancer that starts in the first part of the small intestine.

is a growth in the upper small intestine that may become cancer.

affects the first part of the small intestine, causing digestive problems.

is a rare birth defect causing an extra pouch or tube.

is a very rare birth condition with two pituitary glands.

is a rare birth condition where two urethral channels develop.

is a rare vein problem in the brain present before birth.

is a rare inherited disorder affecting bone growth, development, and learning.

is a genetic nerve disorder causing childhood muscle weakness near the torso.

is a genetic condition causing developmental delay, intellectual disability, and sometimes autism.

is a rare genetic condition affecting development, learning, growth, and sometimes seizures.