【名词&注释】
肺动脉高压(pulmonary hypertension)、骨肉瘤(osteosarcoma)、肺水肿(pulmonary edema)、肺栓塞(pulmonary embolism)、软组织(soft tissue)、混合性(mixed)、右心室肥厚(right ventricular hypertrophy)、松果体(pineal body)、肺静脉高压(pulmonary venous hypertension)
[单选题]动脉导管未闭出现右心室肥厚(right ventricular hypertrophy)时提示 ( )
A. 肺静脉高压(pulmonary venous hypertension)
B. 肺水肿
C. 肺栓塞
D. 肺动脉高压
E. 心力衰竭