Giant Subdural Abscess After Head Trauma

Daisuke Sugawara1, Yoshihiro Aoki1,2, Yuki Matsunaga3

  • 1Department of Emergency Medicine Nagasaki Harbor Medical Center Nagasaki Japan.

Clinical Case Reports
|April 8, 2026
PubMed

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.