Editor,—A 27 year old promiscuous, married man presented with recurrent episodes of ulceration of the penis of 12 years' duration. Each episode began with a painful small raised lesion which got ulcerated and finally healed spontaneously in 2–3 months. The present episode of painful ulceration had been lasting for 6 months or so. In spite of various treatments received from various private practitioners, his genital sore did not respond.

On physical examination, this moderately nourished individual had a single well defined ulcer on the glans penis near the urethral meatus, measuring 8 × 5 mm. The edge of the ulcer was undermined and its floor had necrotic …