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Colour Doppler ultrasonography of retropharyngeal abscess
1Department of Pediatrics, Chang Gung Children's Hospital, Taoyuan, Taiwan, R.O.C.
Insights
Colour Doppler ultrasonography (CDU) effectively evaluates pediatric retropharyngeal abscesses. This imaging technique helps monitor abscess progression and can reduce the need for further radiological imaging in children.
Area of Science:
- Pediatric Radiology
- Medical Imaging
- Otolaryngology
Background:
- Retropharyngeal abscesses in children present diagnostic challenges.
- Accurate and timely evaluation is crucial for effective management.
- Conventional imaging may have limitations in certain pediatric cases.
Purpose of the Study:
- To assess the capability of Colour Doppler Ultrasonography (CDU) in evaluating retropharyngeal abscess in children.
- To determine if CDU can differentiate abscesses from other pathologies and detect complications like carotid sheath invasion.
- To explore the utility of CDU in monitoring treatment response.
Main Methods:
- Five children with suspected retropharyngeal abscess underwent CDU.
- The distance from the internal carotid artery (ICA) to the cervical vertebra (DICA-CV) was measured.
- Fifty healthy children served as controls for DICA-CV measurements.
- Computed tomography (CT) was used for diagnostic confirmation.
- DICA-CV was monitored to track abscess resolution.
Main Results:
- CDU highly suspected retropharyngeal abscess in all evaluated cases.
- One case demonstrated carotid sheath invasion detected by CDU.
- CT confirmed the diagnosis of retropharyngeal abscess in all five children.
- Measured DICA-CV correlated with the presence and resolution of the abscess.
- DICA-CV decreased as the retropharyngeal abscess gradually resolved.
Conclusions:
- CDU is a sensitive tool for evaluating pediatric retropharyngeal abscess.
- CDU aids in monitoring abscess progression and treatment response.
- This imaging modality can potentially reduce the need for additional radiologic examinations in children.
Objective:
This study was conducted to determine the capability of colour Doppler ultrasonography (CDU) in evaluating retropharyngeal abscess in children.
Materials And Methods:
From July 1996 to February 1998, five children with clinical suspicion of retropharyngeal abscess were evaluated by CDU. The distance from internal carotid artery (ICA) to cervical vertebra (CV) (DICA-CV) at the upper cervical level was measured by longitudinal ultrasonography. Fifty healthy children, aged from 1 to 15 years, were recruited in the study to measure DICA-CV as control. Colour Doppler ultrasonography was used to differentiate abscess from other pathology and to detect carotid sheath invasion. Computed tomography was performed to confirm the sonographic diagnosis. Measurements of the DICA-CV at regular intervals were performed to monitor the progression of retropharyngeal abscess.
Results:
Retropharyngeal abscess was highly suspected in all cases under sonographic studies. A patient was found to have carotid sheath invasion. Computed tomography confirmed the diagnosis of retropharyngeal abscess in all cases. Retropharyngeal abscess can be evaluated by the measured DICA-CV. The DICA-CV decreased as the retropharyngeal abscess gradually resolved.
Conclusion:
Colour Doppler ultrasonography offers a sensitive method to evaluate retropharyngeal abscess in children. It can also be used to monitor the progression of retropharyngeal abscess and avoid unnecessary radiologic examinations.