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Case Reports in Otolaryngology
Volume 2016 (2016), Article ID 8756940, 6 pages
http://dx.doi.org/10.1155/2016/8756940
Case Report

Growth Rate Analysis of an Untreated Glomus Vagale on MRI

1Department of Radiology, Westmead Hospital, University of Sydney, Sydney, NSW 2145, Australia
2Department of Otolaryngology, Westmead Hospital, University of Sydney, Sydney, NSW 2145, Australia

Received 19 November 2015; Accepted 22 February 2016

Academic Editor: Abrão Rapoport

Copyright © 2016 Jeffrey Tzu-Yu Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Paragangliomas are slow growing, hypervascular neuroendocrine tumors that develop in the extra-adrenal paraganglion tissues. Paraganglioma involving the vagus nerve ganglia is termed glomus vagale. The slow growth of head and neck paragangliomas especially in the absence of symptom may obviate the necessity for any active intervention, in which case, a “wait and scan” policy is implemented involving long-term clinical and radiologic follow-ups. We present a case of a 71-year-old female with an untreated left glomus vagale who underwent a conservative “wait and rescan” plan of management and the tumor was observed with 8 serial MRI scans over a period of 7.4 years. A growth rate analysis was conducted which demonstrated a slow growth. A literature review of radiologic studies examining the natural history of head and neck paragangliomas was also performed.