Back to the list
Congress: ECR24
Poster Number: C-12451
Type: EPOS Radiologist (educational)
DOI: 10.26044/ecr2024/C-12451
Authorblock: D. C. Carvalho1, R. Hermans2; 1Porto/PT, 2Leuven/BE
Disclosures:
Diogo Costa Carvalho: Nothing to disclose
Robert Hermans: Nothing to disclose
Keywords: Head and neck, CT, MR, Education, Education and training
Learning objectives To review and illustrate the most frequent presentations of paragangliomas in the head and neck region, and some of their potential mimics.
Read more Background Paragangliomas are rare hypervascular neuroendocrine tumors that originate from paraganglion cells outside the adrenal medulla, contrary to pheochromocytomas which originate from paraganglion cells within it [1,2]. Extra-adrenal paraganglion cells allow, between other functions, body response to stresses such as hypoglycemia, hypercapnia, and hypoxia [3].In the head and neck region, paragangliomas present in characteristic locations which define their name, most commonly in the carotid bifurcation, along the vagus nerve, in the middle ear and jugular foramen (or both) [3]. Less common...
Read more Findings and procedure details Imaging has a role in the diagnosis, evaluation of the extent of disease, follow-up and surgical planning. The anatomic location, displacement of surrounding vessels and skull base involvement allow accurate diagnosis of the type of paraganglioma.Ultrasound is commonly employed in the early stages of diagnosis of a neck mass, and in these cases a heterogeneously hypoechoic mass is typically observed (Figure 1), accompanied by pronounced internal vascularity on color Doppler. [fig 1] Magnetic resonance (MR) imaging is the most sensitive modality to characterize...
Read more Conclusion A paraganglioma should be considered when a hypervascular lesion is seen in a typical anatomic location, with which a radiologist should be familiar. Care should be taken to exclude other possible mimics, which can be accomplished by integrating the clinical and imaging findings.
Read more References [1] Lin EP, Chin BB, Fishbein L, Moritani T, Montoya SP, Ellika S, Newlands S. Head and Neck Paragangliomas: An Update on the Molecular Classification, State-of-the-Art Imaging, and Management Recommendations. Radiol Imaging Cancer. 2022 May;4(3):e210088. doi: 10.1148/rycan.210088. PMID: 35549357; PMCID: PMC9152685.[2] Smith JD, Harvey RN, Darr OA, Prince ME, Bradford CR, Wolf GT, Else T, Basura GJ. Head and neck paragangliomas: A two-decade institutional experience and algorithm for management. Laryngoscope Investig Otolaryngol. 2017 Nov 11;2(6):380-389. doi: 10.1002/lio2.122. PMID: 29299512; PMCID:...
Read more
GALLERY