Please choose the correct ending to complete the given sentence: Health: [header] How to diagnose sarcoma [title] Check for new or unexplained lumps on your body. [step] A lump could either be a cyst (benign) or a tumor (cancer). Even if the lump is small and does not feel painful when pressed, it could be cancerous.

Ending1: Pay a visit to your doctor and have it looked at. See your doctor right away if the lump is located : [substeps] Within a muscle. Ending2: If you have persistent lumps, it could be a tumor, and thus a cancer that requires medical treatment. If you think you may have a cyst, but it's not painful, then see your doctor. Ending3: These large lumps usually have a presence in the neck, stomach, and behind the ear. [title] Expect visual indications of a sarcoma : [step] The lump could be growing outward, or in the areas you see it most often. Ending4: [substeps] Check your throat for lumps on your hand or forearm. Feel any bloated lumps you may have.

Answer format: ending1/ending2/ending3/ending4