BACKGROUND.

Our objective is to present a very rare clinical case of cystic hygroma in an adult that clinically presented as an asymptomatic swelling in the neck and was diagnosed after histopathology as cystic hygroma. The objectives of this case report are to discuss the clinical presentation, diagnostic differentials, histopathological findings and appropriate management of this malformation.

 MATERIALS AND METHODS.

 A clinical case of a patient with an asymptomatic neck swelling diagnosed as a   cystic hygroma is presented. The patient’s presentation and the diagnostic procedures, surgery and the follow up procedures are discussed.

CONCLUSION

Cystic hygroma is a benign congenital malformation of the lymphatic system that occurs in infant or children younger than 2 years of age. Although cystic hygroma is well recognized in paediatric practice, it seldom presents de novo in adulthood.¹ These commonly present in head and neck but may present anywhere. Cystic hygroma is very rare in adults, but it should be considered in the differential diagnosis of adult neck swellings. Radical excision appears to be the treatment of choice.