<s>[INST] i am 5 8 and weigh 180. I just had an endoscopy yesterday that revealed a lump in my stomach---the doctor said it could be from organs pushing into my stomach or a tumor....so they plan to do another endcosopy---ultrasound this time. what organs could be pushinginto my stomach and what causes this? [/INST] Hi, dearI have gone through your question. I can understand your concern.  You may have enlarged spleen or some other mass lesion in stomach or peritoneum.  You should go for ultrasound abdomen or ct scan abdomen.  It will give you exact diagnosis.  If needed go for guided biopsy of that mass.  It will give you exact diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using health care magic. Wish you a very good health. </s>