Carcinoma of the Penis

4-6mR per hour, and as mentioned previously the nursing staff need not enter the room when the mould is in position, the radiation hazard is reduced to an acceptable level. The method of treating Queyrat's erythroplasia or carcinoma-in-situ of the penis by an yttrium-90 mould technique was first described by Mantell & Morgan (1969). The limited penetration of the beta particle irradiation is highly advantageous in the treatment of a very superficial lesion. Queyrat's erythroplasia is a very rare condition and only 2 cases have been so treated at The London Hospital, both successfully and without recurrence at five years.