FMA definition : Anterior segmental vein, each instance of which is a variant vein draining the apical
segment of the superior lobe of some left lung and emptying into some left superior
pulmonary vein.;
Synonyme FMA : Left apical vein; Left V1; Apical bronchopulmonary segment of left superior pulmonary vein;
Anterior segmental vein, each instance of which is a variant vein draining the apical
segment of the superior lobe of some left lung and emptying into some left superior
pulmonary vein.