Follow-up MRI demonstrated a cystic structure consistent with a posterior mediastinal cystic hygroma and was atypical for both a neurenteric cyst and a duplication cyst.
Disturbed development of lymphatic channels can also exist elsewhere in the body causing serious bodily malfunction, as is the case with pulmonary lymphangiectasia, cystic hygromas and lymphangiomas.
The ultrasound diagnosis of cystic hygroma of the neck:a case report
Ultrasonic examination in diagnosis of advanced fetal cystic hygroma