A – 19 year – old men was reffered to our 
Surgical department with a 4 – month history of an 
asymptomatic swelling in the left supraclavicular fossa. 
The patient a few months ago, carried sacks of cement. 
The left supraclavicular fossa was enlarged by a clearly 
delineated, elastic fluctuating swelling with a diameter of 
10-12 cm, spreading infraclaviculary. The ultrasound 
examination confirmed an infraclIavicular spreading and 
revealed a hypoechogenic echo-free mass of the size of 
10x15 cm, clearly outlined and no internal perfusion was 
found by color-coded Doppler investigation. The blood 
count and biochemical tests were normal. The 
histologically examination was found the presence of a 
tissue characteristic for a synovial cyst and a diagnosis of 
acromioclavicular cyst was made. Treatment of synovial 
cysts was surgical with surgical resection of the cyst.