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Published on: October 13, 2023
Parotid abscess: mini-pictorial essay
G Viselner1, G van der Byl, A Maira
1IRCCS Foundation, San Matteo Medical Center, Institute of Radiology, University of Pavia, Pavia, Italy.
Abstract:
Bacterial and viral infection of the intraparotideal and periparotideal lymph nodes, or of the glandular parenchyma, can lead to inflammatory and subsequently suppurative changes, which can result in abscess formation. Sonography allows a detailed morphological evaluation of the gland and has an important value, complementary to clinical examination, in the study of parotid inflammatory diseases. Specifically, sonography defines lesion's characteristics and, in a large number of cases, also its nature and, among the various imaging techniques, it is considered first-line imaging for the evaluation of parotid abscesses, which are characterized by hypo-anechoic lesions, with irregular margins. Color Doppler signals are peripheral to the abscess. If combined with color Doppler, sonography is important not only in diagnosis, but also in the evaluation of therapeutic efficacy and as a guide to the aspiration and drainage of abscesses. The rarity of some of these lesions led us to publish this mini-pictorial essay.
Insights
Parotid abscesses, caused by infections, are best diagnosed using sonography. This imaging technique evaluates lesion characteristics and guides treatment, including drainage.
Area of Science:
- Medical Imaging
- Infectious Diseases
- Otolaryngology
Background:
- Parotid gland infections can lead to abscess formation.
- Sonography is a valuable tool for evaluating parotid inflammatory diseases.
- Abscesses require accurate diagnosis and management.
Purpose of the Study:
- To highlight the role of sonography in diagnosing parotid abscesses.
- To describe the sonographic characteristics of parotid abscesses.
- To emphasize sonography's utility in guiding treatment and evaluating efficacy.
Main Methods:
- Utilizing sonography for morphological evaluation of the parotid gland.
- Employing color Doppler to assess vascularity around abscesses.
- Reviewing cases of parotid inflammatory lesions.
Main Results:
- Sonography accurately defines lesion characteristics and nature.
- Parotid abscesses typically appear as hypo-anechoic lesions with irregular margins.
- Color Doppler signals are usually peripheral to the abscess.
Conclusions:
- Sonography is the first-line imaging modality for parotid abscesses.
- Combined sonography and color Doppler aid in diagnosis and therapeutic evaluation.
- Sonography effectively guides abscess aspiration and drainage procedures.
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