Missed diagnosis; non-traumatic retroclival haematoma in adults, brief case report with review and evaluation of similar cases in the literature.

Retroclival subdural haematomas (RSH) are a rare occurrence, accounting for 0.3% of acute extra-axial haematomas. Although typically associated with trauma, non-traumatic causes include coagulopathy, pituitary apoplexy and vascular anomalies.The presence of cases due to non-traumatic causes can present significant diagnostic challenges. This article aims to shed light on the intricacies of non-traumatic RSH by conducting a review of the literature and presenting a case study of a 74-year-old woman on anticoagulants. The primary objective is to enhance our understanding of the diagnosis and treatment of this condition, emphasising the significance of bleeding in a location that often goes unnoticed, particularly in Computed Tomography (CT) scans, with the exception of trauma. A comprehensive review of the literature revealed 28 cases of non-traumatic RSH in adults. A detailed analysis was conducted on the demographic characteristics, causes, presentations and outcomes of these cases.The mean patient age was found to be 59 years, with a slight male predominance of 57.57%. The primary causes were identified as pituitary apoplexy (39.28%) and anticoagulants (21.42%), while 25% of cases had an unknown aetiology. Spinal canal extension occurred in 10.71% of cases, which increased morbidity.The recovery rate was 92.85% and the mortality rate was 3.57%.Non-traumatic RSH is under-recognised and often missed on standard imaging.Conservative treatment is effective without spinal cord compression.Awareness is very important, especially for diagnosis and treatment.