Tips to Check Your Breasts for Lumps – Signs Of Breast Cancer Symptoms. Lump is a compact mass of a substance, especially one without a definite or regular shape. Lump in the breast is painful, red or hot. Breast lump is hard and doesn’t move. A lump grows back after it’s been removed. If someone have a lump in the breast, they will have a swelling on the side of the neck, armpit or groin that doesn’t go down. Other symptoms includes Swelling of all or part of a breast (even if no distinct lump is felt), Skin irritation or dimpling (sometimes looking like an orange peel), Breast or nipple pain. Nipple retraction (turning inward), Redness, scaliness, or thickening of the nipple or breast ski