略語大辞典 [Med] 22 NM necrotic mass (肺の気管支内の)壊死状腫瘍. 壊死状物体. 気管支鏡所見.necrotic mass; a characteristic of a tumor in a bronchus of a lung; an endobronchial involvement; ref. FFM(freshy friable mass), PM(polypoidmass); [Med]. 丸善「略語大辞典」JLogosID : 11862994