Case report

A 25-year-old man presented with a tiny lesion on the suprasternal notch which occasionally discharged a clear fluid. The lesion was faint brown and measured 3 mm in maximum dimension and was not inflamed. Clinically, this was suspected to be a cyst.

Microscopic examination showed an unremarkable epidermis and the dermis contained a cystic space lined by bland pseudostratified respiratory type epithelium and adjacent seromucinous glands (fig 1).