Abstract
Cervical thymic cysts are nearly 0.3% of all congenital cervical cysts. Thymic cysts are asymptomatic, but they rarely complain of dysphagia or tracheal obstruction symptoms. A soft, mobile, and painless mass increasing with valsalva maneuver directs the diagnosis of laryngocele. There has not been any study in the literature in which thymic cyst presenting like laryngocele. We hereby present a case of thymic cyst mimicking laryngocele that has not been reported so far.
Highlights
Thymic cysts are rare lesions and may occur anywhere from mandible to mediastinum, along with the migration path of the thymus
A successive computed tomography (CT) scan and magnetic resonance imaging (MRI) was performed which disclosed a cystic mass extending into the right hemithorax
The thymus gland is the central organ of the lymphoid system during infancy
Summary
Thymic cysts are rare lesions and may occur anywhere from mandible to mediastinum, along with the migration path of the thymus. They are mostly seen in the mediastinum. Thymic cysts are generally misdiagnosed as branchial cyst and cystic hygroma, since they may cause almost similar symptoms to cervical cysts. A thymic cyst mimicking a laryngocele is extremely unusual. We present a boy with a cervical thymic cyst mimicking laryngocele. To the best of our knowledge, this is the first case in the literature showing that a cervical thymic cyst presenting as a laryngocele in childhood age
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