A case of an ectopic cervical thymic cyst

Ectopic cervical thymic cysts are uncommon lesions and definitive preoperative diagnosis is not always possible. Surgical excision is recommended due to the small but possible chance of malignant degeneration in adulthood. We present a case of a nine year old boy with an asymptomatic lesion in his neck, discuss the differential diagnoses of such lesions and treatment considerations.