Dynamic CT features of hepatic abscesses

Area of Science:

• Radiology
• Hepatology
• Medical Imaging

Background:

• Hepatic abscesses are collections of pus within the liver, posing diagnostic challenges.
• Accurate and early diagnosis of hepatic abscesses is crucial for effective treatment and patient outcomes.

Purpose of the Study:

• To evaluate the diagnostic utility of a specific computed tomography (CT) finding in identifying hepatic abscesses.
• To describe the imaging characteristics of hepatic abscesses using dynamic CT.

Main Methods:

• Dynamic computed tomography (CT) was performed on forty patients with hepatic abscesses.
• Image analysis focused on the density patterns within and surrounding the lesions after contrast injection.

Main Results:

• A distinct
• double target sign
• characterized by a hypodense center, hyperdense ring, and outer hypodense zone, was observed.
• This sign was highly suggestive of hepatic abscess formation.
• Transient hyperdensity in the surrounding hepatic parenchyma was noted in 12 cases, potentially indicating hepatic venous obstruction.

Conclusions:

• The "double target sign" on dynamic CT is a reliable indicator of hepatic abscesses.
• Associated findings like transient parenchymal hyperdensity may suggest underlying inflammatory processes or vascular compromise.