{Reference Type}: Case Reports {Title}: Tension Subdural Hygroma Following Resection of Posterior Fossa Tumour in a Child: A new clinico-radio-pathological entity. {Author}: Pillai MK;Kariyattil R;Chhabra R;Govindaraju V;Kottoorazhikam KK; {Journal}: Sultan Qaboos Univ Med J {Volume}: 24 {Issue}: 2 {Year}: 2024 May 暂无{DOI}: 10.18295/squmj.9.2023.056 {Abstract}: Persistent hydrocephalus is common in children after resection of posterior fossa tumours. However, occurrence of subdural hygroma is very rare. We report the case of a 14-month-old child who presented at a paediatric neurology clinic in Muscat, Oman in 2021 who developed a tense subdural hygroma with stable hydrocephalus, in the early postoperative period, following posterior fossa tumour resection. We describe the distinctive clinical, radiological and pathological features associated with the development of a tense subdural hygroma. We also discuss the management by cerebrospinal fluid diversion, which includes either a ventriculoperitoneal or subduroperitoneal shunt. This unique condition is distinguished from external hydrocephalus by features that are critical to the management strategy.