During the years 1985 up to 1995 53 patients between 18 and 80 years o
f age (mean age 54,7 years) with histologically and clinically proven
Zoon's balanitis were treated by circumcision. The majority of patient
s had symptoms for more than 12 months. In five cases they had lasted
for 8, 10, 16, 17 and 47 (!) years.30 patients were investigated by me
ans of physical examination and questionaire in this retrospective stu
dy. Lesions involved glans in all patients, while in 17 of 30 patients
both glans and prepuce were involved. None of the patients showed les
ions of the prepuce only.In most cases Zoon's balanitis was successful
ly treated by circumcision in a period of two to four weeks.In four ca
ses, psoriatic lesions, and in one case lichen ruber was diagnosed.In
the remaining patient, whose circumcision was inadequate, a small area
of balanitis persisted in the sulcus coronarius still covered by the
foreskin.The curative effect of adequate circumcision in 100% of patie
nts suggests that Zoon's balanitis is a relatively non-specific reacti
ve balanitis caused by a disturbed ''preputial-ecology''.It is remarka
ble that other distinct inflammatory diseases of glans and prepuce can
show features which are identical to those Zoon's balanitis.