A man in his 60s presented with a 1-year history of a pruritic, dark red plaque on his right upper eyelid. No remarkable medical history was noted. Physical examination findings revealed a 4 × 2-cm erythematous, violaceous, indurated, scaly plaque with some papules on his right upper eyelid (Figure , A). Results of routine blood tests and biochemistry analysis were within normal limits. A biopsy sample was obtained for histopathologic examination (Figure , B).Histopathologic analysis revealed perifollicular lymphocytic infiltrates around cystically dilated follicular infundibula and exocytosis of atypical lymphocytes into the epithelium, with admixed plasma cells, eosinophils, and multinucleate giant cells (Figure , C). Alcian blue staining showed focal mild follicular mucin deposition. Immunohistochemical analysis showed lymphocytic infiltrates positive for CD3, CD4, CD5, and CD7 and negative for CD8, CD20, CD30, CD79a, and CD56 (Figure , D). The ratio of CD4 to CD8 cells within hair follicles was greater than 7:1. Monoclonal T-cell gene rearrangement was demonstrated.