Eyelid cleft (coloboma) and ankyloblepharon are rare congenital malformations. There is no report of their diagnosis along with skin tumor or hyperplasia. Herein, we report a case of congenital skin tumor of the eyelid in a 1-month-old boy with ankyloblepharon. We excised the skin tumor, but pathological examination did not reveal tumor tissue. This case was suspected as a congenital malformation similar to eyelid cleft or hypoplasia complicated by skin hyperplasia. However, to the best of our knowledge, there are no reports of skin hyperplasia in patients with eyelid cleft or lateral ankyloblepharon; therefore, we suspect this case to be a rare type of congenital eyelid malformation.
