Pemphigus erythematosus associated with thymoma: a case report.

A 52-year-old Chinese man was found to have a benign thymoma and pemphigus erythematosus (PE). Initially, most of his skin lesions appeared on the scars of the surgical incisions and suture sites three months after he underwent thymectomy. To our knowledge, this is the first report documenting the skin lesions of PE on the scars after thymectomy. Most of the previous cases had myasthenia gravis and skeletal muscle antibodies. However, in this patient, neither condition was present.