Jellinger Kurt A
Institute of Clinical Neurobiology, Vienna, Austria.
Free Neuropathol. 2025 Jan 29;6:3. doi: 10.17879/freeneuropathology-2025-5982. eCollection 2025 Jan.
Survival after traumatic brain injury (TBI) and posttraumatic parkinsonian-like symptoms is increasing, in particular in those patients developing during disease course an unresponsive wakefulness syndrome (UWS) previously termed persistent vegetative state. 100 patients with disorders of consciousness after a blunt TBI ranging from deep coma to defective states / minimal cognitive state survived between 12 and 900 days. 15 patients developed parkinsonian symptoms, which were correlated with their neuropathological changes. The patients, surviving either UWS recovery (n = 10) or defective minimally conscious state (MCS) (n = 5), clinically presented with severe (n = 7), moderate (n = 5), or mild (n = 3) parkinsonian symptoms mainly comprising symmetrical rigidity, amimia, hypo- / akinesia and convergence disorder, which in six patients were associated with unilateral or bilateral resting tremor. Following levodopa treatment, 11 patients showed mild to moderate improvement and four patients almost complete improvement of UWS, parkinsonism or both. Neuropathology revealed in most cases supratentorial traumatic lesions such as contusions, cerebral hemorrhages and diffuse white matter lesions. In addition to lesions in the basal ganglia and hippocampus, all cases displayed older lesions in the dorsolateral or lateral parts of the pons and in lower midbrain with various involvement of substantia nigra. The periaqueductal gray and upper midbrain tegmentum were however preserved. The pattern of brainstem lesions correlated with the sequelae of transtentorial shifting due to increased intracranial pressure. These and other rare observations following blunt TBI confirm the importance of the pattern of secondary brainstem lesions for the development and prognosis of UWS and rare parkinson-like symptoms.
创伤性脑损伤(TBI)后存活且出现创伤后帕金森样症状的情况正在增加,尤其是那些在病程中发展为无反应觉醒综合征(UWS)(先前称为持续性植物状态)的患者。100例钝性TBI后意识障碍患者,从深度昏迷到意识障碍/最低认知状态,存活时间在12至900天之间。15例患者出现帕金森症状,这些症状与他们的神经病理学变化相关。存活的患者中,UWS恢复(n = 10)或意识障碍最低意识状态(MCS)(n = 5),临床上表现为重度(n = 7)、中度(n = 5)或轻度(n = 3)帕金森症状,主要包括对称性僵硬、表情缺失、运动减退/运动不能和凝视障碍,其中6例患者伴有单侧或双侧静止性震颤。左旋多巴治疗后,11例患者的UWS、帕金森症或两者均有轻度至中度改善,4例患者几乎完全改善。神经病理学显示,大多数病例存在幕上创伤性病变,如挫伤、脑出血和弥漫性白质病变。除基底节和海马病变外,所有病例在脑桥背外侧或外侧以及中脑下部均显示陈旧性病变,黑质有不同程度受累。然而,导水管周围灰质和中脑上部被盖保留。脑干病变的模式与颅内压升高导致的小脑幕切迹移位后遗症相关。这些以及钝性TBI后的其他罕见观察结果证实了继发性脑干病变模式对于UWS和罕见帕金森样症状的发生及预后的重要性。