lump bump protuberance bulge swelling projection protrusion knob prominence growth outgrowth excrescence nodule node tumescence convexity swell hunch intumescence tumefaction mound gibbosity knap mass knot carbuncle tumour tumor eminence ridge bunch jut contusion overhang wart process boil blister wen inflammation bruise ledge shelf injury corn eruption distension distention dilation outthrust hole neoplasm bulla lip overlap flange extension outcrop nub ball irregularity gnarl papilla boss bulk knop umbo snag bunching blob bagginess sac nodulation appendage tuberosity pustule pimple sore abscess welt wale enlargement pock weal sty puffiness bunion puff engorgement increase cyst spot wound blemish papule ulcer furuncle blain polyp whelk