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  • Title: Cognitive decline as an important sign for an operable cause of dementia: chronic subdural haematoma.
    Author: Schebesch KM, Woertgen C, Rothoerl RD, Ullrich OW, Brawanski AT.
    Journal: Zentralbl Neurochir; 2008 May; 69(2):61-4. PubMed ID: 18444216.
    Abstract:
    BACKGROUND: Cognitive decline, slow psychomotor regression and confusion, especially in the elderly, often result in medical consultation. Frequently, these rather unspecific symptoms are interpreted as signs of beginning dementia. When mental regression is joined by tremor or motor deficits, neurodegenerative disease is commonly considered and the need for neuroimaging is underestimated. Chronic subdural haematoma (CSH) is known to be the most frequent type of intracranial bleeding, appearing mostly in the elderly after minor trauma with unspecific symptoms. The aim of this retrospective study was the identification of the leading clinical symptoms in patients with the diagnosis CSH who had been treated surgically in our Neurosurgical Department. PATIENTS AND METHOD: 356 patients with symptomatic CSH (225 male, 131 female; mean age 68.3 years), who were admitted to our Neurosurgical Department between 1992 and 2003, were included in the study. We reviewed the charts documenting preoperative clinical status, radiological signs, history of trauma, operative complications, postoperative clinical status, days of hospitalisation as well as gender and age. RESULTS: The primary surgical procedure performed in 343 patients (96.4%) was burr-hole trepanation. The leading preoperative symptoms were mnestic deficits (cognitive decline, confusion) in 192 patients (55.8%), followed by headache in 150 patients (45.5%) and motor deficit in 144 patients (41.1%). Furthermore, we found a statistically significant correlation (p<0.005) between the thickness of the left-sided haematoma and the symptoms aphasia and psychosyndrome. CONCLUSION: The leading clinical symptoms identified in our cohort were mnestic deficits, headache and motor deficit, signs that mostly appear at the beginning of demential diseases. Thus, CSH should be taken into account as an important differential diagnosis for demential and neurodegenerative diseases and neuroimaging should be demanded. Once a CSH is detected this way, the patient should be transferred to a neurosurgical department where an easy standard procedure may potentially lead to early recovery.
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