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Background and importance: Chronic subdural hematomas are a frequently encountered neurosurgical pathology, especially in the elderly. They often require surgical evacuation, but recent studies have shown good results with conservative treatment in selected cases.
Clinical presentation: We report the case of a 72-year old patient that developed large, non-traumatic, bilateral, acute-on-chronic subdural hematoma after repeated abdominal surgery for appendicular carcinoma. He presented an abdominal wound infection and good neurological status (GCS score of 14 points), factors that indicated the delay of surgical intervention. Subsequent clinical and radiological improvement forestalled the operation altogether and he presented complete spontaneous resolution of subdural hematomas at only 5 months after diagnosis.
Conclusion: Although surgical treatment is performed in the majority of chronic subdural hematomas, in clinically and radiologically selected cases, the operation can be avoided. The hematoma can present resolution, either spontaneously or with the help of conservative treatment.