略語大辞典 [Med] 21 PM polypoid mass (肺の気管支内の)ポリープ様腫瘍.polypoid mass; an endobronchial involvement, a disease in a bronchus of the lung; ref. FFM(fleshy friable mass), NM(necrotic mass); [Med]. 丸善「略語大辞典」JLogosID : 11856016