TY - JOUR T1 - A rare case of branchial cleft cyst TT - JF - surgery JO - surgery VL - 7 IS - 3 UR - http://jsurgery.bums.ac.ir/article-1-179-en.html Y1 - 2019 SP - 103 EP - 105 KW - Branchial Cyst KW - Branchial Arch KW - Branchial Cleft N2 - Branchial cleft cyst abnormalities account for approximately 20% of congenital neck and head abnormality. There are four types of branchial cleft cyst. The incidence of type one is 8 percent, type two 95%, type three 2% and type four 1 to 4 percent with just 100 reported cases. Type four is reported very rarely in previous investigations and the patient in this survey appears to belong to this type. Also one of the differential diagnoses of the thoracic inlet masses can be considered the branchial cyst Type IV, which can occur in the fifth decade without any presentation according to our experience in this case in spite of the fact that previous studies which revealed its incidence in the second to fourth decade of life. Branchial cleft cysts are diagnosed according to MRI and CT scans that in this case the diagnosis is based on a CT scan. The choice treatment for branchial cleft is surgery. Relapse is scarce and imply that a piece of tract’s epithelial lining has remained and it is more common in the patients who suffered from infectious lesion. M3 10.32592/Jsurgery.2019.7.3.105 ER -