This document discusses a case report on using Acoustic Radiation Force Impulse Imaging (ARFI) to help diagnose an ectopic intrathyroidal thymus. Ectopic intrathyroidal thymus is a rare condition caused by incomplete migration of the thymus during embryogenesis. It can be misdiagnosed as a thyroid nodule. ARFI is a new ultrasound technique that determines tissue elasticity using acoustic pulses, and has been used to differentiate between benign and malignant thyroid nodules. In this case, ARFI helped diagnose an ectopic intrathyroidal thymus in a pediatric patient, avoiding unnecessary biopsy or surgery.

1. International Journal of
Radiology and Radiation
Oncology
Peertechz Journals

2. Case Report
Acoustic Radiation Force Impulse Imaging in
the Differential Diagnosis of an Ectopic
Intrathyroidal Thymus
 Dilek Sağlam*, Meltem Ceyhan Bilgici, Cengiz Kara, Muzaffer
Elmali, Asli Tanrıvermiş Sayit
 *Corresponding author: Dilek Sağlam, Ondokuz Mayıs University,
Department of Radiology, 55270, Atakum, Samsun, Turkey, Tel:
+905336355443; Fax: +903624576091;
 Dates: 07 December, 2016; Accepted: 25 January, 2017; Published:
27 January, 2017;
 Citation: Sağlam D, Bilgici MC, Kara C, Elmali M, Sayit AT (2017)
Acoustic Radiation Force Impulse Imaging in the Differential
Diagnosis of an Ectopic Intrathyroidal Thymus. Int J Radiol Radiat
Oncol 3(1): 010-012.

3. Abstract
 Ectopic intrathyroidal thymus is caused by a hesitate in the migration
of thymus during embryogenesis and is a rare cause of a nodular
intrathyroidal lesion. Nodular thyroid lesions raise the suspicion of
malignancy in the pediatric age group. Although rare, ectopic
intrathyroidal thymus is usually misdiagnosed as a thyroid nodule and
in addition to ultrasonography, further imaging techniques including
MRI is performed. Fine needle aspiration biopsy or surgical excision,
are also included in the management in thyroid nodules, because of
the possibility of a malignancy. Acoustic Radiation Force Impulse-
Imaging (ARFI) is a new method determining the tissue elasticity using
short duration acoustic pulces and exciting the tissue in the selected
region of interest. Acoustic Radiation Force Impulse-Imaging had been
used in the differentiation of malign and benign thyroid nodules with
or without in combination with gray-scale ultrasonography findings..

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