Cervical Bronchogenic Cyst Mimicking Thyroid Cyst

Sung Hoon Kang; Sung Min Jin; Hee Kyung Kim; Tae Mi Yoon

doi:10.11106/ijt.2017.10.2.118

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Kang, Jin, Kim, and Yoon: Cervical Bronchogenic Cyst Mimicking Thyroid Cyst

Case Report

International Journal of Thyroidology 2017; 10(2): 118-122.

Published online: 29 November 2017

DOI: https://doi.org/10.11106/ijt.2017.10.2.118

Cervical Bronchogenic Cyst Mimicking Thyroid Cyst

Sung Hoon Kang¹, Sung Min Jin¹, Hee Kyung Kim², Tae Mi Yoon¹

¹Department of Otorhinolaryngology-Head and Neck Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea.

²Department of Internal Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea.

Correspondence: Tae Mi Yoon, MD, PhD, Department of Otorhinolaryngology-Head and Neck Surgery, Chonnam National University Medical School and Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun 58128, Korea. Tel: 82-61-379-8190, Fax: 82-61-379-8199, yoontm@chonnam.ac.kr

Received 2 June 2017 Revised 18 August 2017 Accepted 8 September 2017

The Korean Thyroid Association

(open-access):

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Bronchogenic cysts are rare congenital malformations that result from an abnormal development of the ventral foregut budding of the tracheobronchial tree at the time of organogenesis. They are usually located in the mediastinum and intrapulmonary regions. Localization in the cervical area is unusual, and specially, bronchogenic cysts presenting as thyroid and perithyroid cyst are quite rare. We report a case of bronchogenic cyst mimicking a thyroid colloid cyst. We tried percutaneous ethanol injection at 3 times for treatment of this thyroid cyst, but we failed, because of intractable cough. After cyst excision with thyroid lobectomy, we diagnosed the lesion to bronchogenic cyst. Bronchogenic cyst should be considered in the differential diagnosis of perithyroid cyst, which especially the lesion is intolerable cyst to enthanol injection.

Keywords: Bronchogenic cyst, Thyroid cyst, Colloid cysts, Sclerotherapy

Figures and Tables

Fig. 1

CT scans with contrast enhancement shows 5×5 cm well-defined cyst, originated from right thyroid gland, extending to upper mediastinum. (A, B) Axial views, (C) Coronal view.

Fig. 2

Thyroid US reveals 5×5 cm sized hypoechoic pure cyst with multiple comet-tail artifact at lower pole of right thyroid lobe.

Fig. 3

(A) Operative finding shows that superior part of the cystic wall is composed of cartilage and connected to first ring of trachea. (B) This operative photo reveals that the cystic wall is attached to the recurrent laryngeal nerve. (C) Photo of the surgical specimen shows about longitudinal 5 cm sized cystic mass at inferior portion of right thyroid lobe. arrows: recurrent laryngeal nerve, C: cyst, Th: thyroid gland, Tr: trachea

Fig. 4

Histopathologic photo shows that cystic wall contains mucoserous glands (arrowhead) and hyaline cartilage (arrows), which is consistent with bronchogenic cyst (H&E staining, ×100). Cystic lesion is lined by respiratory type epithelium (inlet, H&E staining, ×200).

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