Related Experiment Video
Updated: Apr 9, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
Giant Subdural Abscess After Head Trauma
Daisuke Sugawara1, Yoshihiro Aoki1,2, Yuki Matsunaga3
1Department of Emergency Medicine Nagasaki Harbor Medical Center Nagasaki Japan.
Abstract:
Infected subdural hematoma caused by hematogenous bacterial seeding is a rare entity that is difficult to distinguish from hemorrhagic progression on CT. Clinicians should consider secondary infection of subdural collections in patients with bacteremia and pursue prompt drainage when unexplained enlargement is observed.
Insights
Infected subdural hematoma from bacterial spread is rare and mimics bleeding on CT scans. Prompt surgical drainage is crucial for unexplained subdural collection enlargement in patients with bacteremia.
Area of Science:
- Neurology
- Infectious Diseases
- Radiology
Background:
- Infected subdural hematoma (ISDH) is a rare condition.
- Distinguishing ISDH from hemorrhagic progression on CT scans is challenging.
Purpose of the Study:
- To highlight the diagnostic difficulties of ISDH.
- To emphasize the importance of considering secondary infection in subdural collections.
Main Methods:
- Review of clinical presentations and imaging findings of ISDH.
- Comparison with hemorrhagic progression of subdural hematomas.
Main Results:
- ISDH can be mistaken for simple hemorrhagic progression on CT.
- Bacteremia is a key indicator for potential secondary infection.
Conclusions:
- Clinicians must consider ISDH in patients with bacteremia and unexplained subdural collection enlargement.
- Prompt surgical drainage is recommended for suspected ISDH.

