Perforating Syphilitic Chancre.

A middle aged person had, perforating chancre of the shaft of the penis. The underlying corpus cavernosum remained unaffected and could be seen through the perforation. There was no evidence of secondary bacterial infection or other concomitant venereal disease. Extreme necrosis of the ulcer due to obliterative endarteritis and impairment of healing due to ant fibroblastic activity of topical corticosteroid are suggested as possible factors in the development of perforation of the ulcer.