Peritonsillar abscess CT scan
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Prince Tano Djan, BSc, MBChB [2]
Overview
CT scan is helpful in defining the characteristics of the abscess as well as to classify it. It also helps in guiding possible complications. Coronal contrast-enhanced CT scan of the neck may identify the peritonsillar abscess[1] however, the use of CT scan is associated with a clinically significant delay in time to an otolaryngology consultation, time to admission, and time to bedside procedure.[2] CT scan may show diffuse hypodense lesion with rim enhancement in the peritonsillar space.[3]
CT scan
- Imaging is helpful in differentiating peritonsillar abscess from peritonsillar cellulitis as well as a guide during abscess drainage.[4][1][5][6][7]
- CT scan is helpful in defining the characteristics of the abscess as well as to classify it.
- It also helps in guiding possible complications. For example, patients with inferior cap-type abscess are at highest incidence of extraperitonsillar spread than the other categories of peritonsillar abscess.[8]
- Coronal contrast-enhanced CT scan of the neck may identify the peritonsillar abscess[1] however, the use of CT scan is associated with a clinically significant delay in time to an otolaryngology consultation, time to admission, and time to bedside procedure.[2]
- CT scan may show diffuse hypodense lesion with rim enhancement in the peritonsillar space.[3]
The image above shows a CT scan of right-sided peritonsillar abscess.[9] Courtesy James Heilman, MD
References
- ↑ 1.0 1.1 1.2 Bandarkar AN, Adeyiga AO, Fordham MT, Preciado D, Reilly BK (2016). "Tonsil ultrasound: technical approach and spectrum of pediatric peritonsillar infections". Pediatr Radiol. 46 (7): 1059–67. doi:10.1007/s00247-015-3505-7. PMID 26637999.
- ↑ 2.0 2.1 Grant MC, Guarisco JL (2016). "Association Between Computed Tomographic Scan and Timing and Treatment of Peritonsillar Abscess in Children". JAMA Otolaryngol Head Neck Surg. 142 (11): 1051–1055. doi:10.1001/jamaoto.2016.2035. PMID 27533126.
- ↑ 3.0 3.1 Chen Y, Yang Q, Wang T, Li J, Ye J, Liu X; et al. (2014). "[Application of enhanced CT in the differential diagnosis of peritonsillar abscess and intratonsillar abscess]". Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 49 (2): 131–5. PMID 24742512.
- ↑ Costantino TG, Satz WA, Dehnkamp W, Goett H (2012). "Randomized trial comparing intraoral ultrasound to landmark-based needle aspiration in patients with suspected peritonsillar abscess". Acad Emerg Med. 19 (6): 626–31. doi:10.1111/j.1553-2712.2012.01380.x. PMID 22687177.
- ↑ Buckley AR, Moss EH, Blokmanis A (1994). "Diagnosis of peritonsillar abscess: value of intraoral sonography". AJR Am J Roentgenol. 162 (4): 961–4. doi:10.2214/ajr.162.4.8141026. PMID 8141026.
- ↑ Strong EB, Woodward PJ, Johnson LP (1995). "Intraoral ultrasound evaluation of peritonsillar abscess". Laryngoscope. 105 (8 Pt 1): 779–82. doi:10.1288/00005537-199508000-00002. PMID 7630286.
- ↑ Blaivas M, Theodoro D, Duggal S (2003). "Ultrasound-guided drainage of peritonsillar abscess by the emergency physician". Am J Emerg Med. 21 (2): 155–8. doi:10.1053/ajem.2003.50029. PMID 12671820.
- ↑ Kawabata M, Umakoshi M, Makise T, Miyashita K, Harada M, Nagano H; et al. (2016). "Clinical classification of peritonsillar abscess based on CT and indications for immediate abscess tonsillectomy". Auris Nasus Larynx. 43 (2): 182–6. doi:10.1016/j.anl.2015.09.014. PMID 26527518.
- ↑ {{https://commons.wikimedia.org/wiki/File:PeritonsilarAbs.png
