ANAMNESIS / SYMPTOMS:
A 30 year old patient shows a bulging at the border between right lateral cervical and supraclavicular region that occurred 5 days ago. The bulging developed within a few hours and is very painful on palpation.


FINDINGS:
Lateral of the internal jugular vein, cranial of the subclavian vein and immediately bordering on the sternocleidomastoid muscle shows a hypoechoic tumour with an extent of 23 x 24 x 11 mm. The tumour has hyperechoic septum-like structures inside and is well definable from the surrounding tissue. It is compressible with the transducer on the ultrasound image.


DIAGNOSIS:
The patient is suspected of having a haemorrhagic cyst.


DIFFERENTIAL DIAGNOSIS:
Necrotic lymphatic node with abscess formation