Branchiogenic carcinoma with rapid growth and skin involvement: a case report.

Branchiogenic carcinoma (BC) is an extremely rare and still controversial clinic entity with few cases reported in literature. This malignant squamous epithelial wall degeneration of a pre-existing second branchial cleft cyst (SBCC) was first described by Von Volk-mann in 1882. Here we present a case of cervical cystic mass that was histologically diagnosed as a primary branchial cleft cyst carcinoma. This is the first documented cases of primary BC presenting with skin involvement on initial examination.