患儿男,40天。出生后其母发现右颌下有一核桃大肿块,后肿块随婴儿长大而较速增大,见突向口底,致舌抬高,影响吸吮和进食。体检:营养和发育较差,右颌下及上颈部膨大明显,触及约7×5×3厘米大小中等硬度肿块,边界清楚,表面光滑,可移动。口内见口底膨隆明显,舌体向左后方抬高,无运动受限。肿块穿刺抽出少许液体,镜检见到散 Children male, 40 days. After the birth of his mother found a large right submandibular big walnut mass after the baby grew up more rapidly, see the sudden protruding mouth, caused by tongue elevation, affecting sucking and eating. Physical examination: poor nutrition and development, under the right mandibular and upper neck swelling significantly, reaching about 7 × 5 × 3 cm in size medium hardness mass, clear boundary, the surface is smooth, removable. See the mouth bulging mouth obviously, the tongue raised to the left rear, no movement is limited. Lumps puncture a little liquid, microscopic examination to see scattered