前言
肺动脉高压(PAH)是一种严重的病理、生理性紊乱,其特征是肺血管阻力(PVR)逐渐升高,最终导致右心室(RV)功能障碍,导致心脏衰竭和死亡(1-3)。肿瘤、结节病、血肿等外部压迫肺血管可以导致的肺动脉高压,属于第5类(4,5)。虽然肺动脉高压起病隐匿、病因复杂(1),但由于压迫肺血管导致的肺动脉高压并不十分常见,并且肺动脉高压的严重程度主要取决于原发疾病的严重性,肺动脉高压的非特异性临床表现(呼吸困难、胸痛、疲劳、乏力)使得肺动脉高压常常被原发疾病掩盖(2),所以当发现肺动脉高压时患者已经处于疾病晚期阶段(6,7),患者原发病的诊断和治疗以及对于阻止肺动脉高压的进展十分重要。在这3个个案报导中,分别呈现了由于结节病、组织血肿、异常起源的右肺动脉导致的肺高压。
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