Branchial cleft cyst

Branchial cleft cyst: Cyst wall lined by ciliated columnar lining epithelium. Sub epithelial fibrocollagenous tissue shows lymphocytic infiltrate (H&E,X100)

Branchial cleft cyst: Cyst wall lined by ciliated columnar lining epithelium. Sub epithelial fibrocollagenous tissue shows lymphocytic infiltrate (H&E,X400)

Branchial cleft cyst: Cyst wall lined by ciliated columnar lining epithelium. Sub epithelial fibrocollagenous tissue shows lymphocytic infiltrate, cholesterol clefts, and multinucleated foreign body giant cells (H&E,X100)