Should i be concerned if my friend has a lump in her upper right part of her stomach. she says its hurting her alot. do u know what this could be?

RUQ anatomy: Anatomically, the right upper quadrant (RUQ) of the abdomen includes: liver, gallbladder, pancreatic head, bile ducts and ampulla, c-loop of the duodenum, stomach antrum and pylorus, the hepatic flexure of the colon. Don't forget the diaphragm and lower chest are pretty close by. The abdominal musculature, ribs, and skin can all contribute as well to localizing RUQ pain. An exam is appropriate.