Objective: To compare the costs of the various options presently avail
able in Australia for treatment of advanced prostatic carcinoma by and
rogen deprivation. Design: Forty patients underwent a bilateral orchid
ectomy for prostatic carcinoma during the 1990/91 financial year at th
e Princess Alexandra Hospital, Brisbane. The Yale Cost Model, as adapt
ed for use in Australian case-mix projects, was used to derive a diagn
osis related group (DRG) cost for this procedure. This was compared wi
th the projected cost that would be incurred in treating patients with
the various medical alternatives. To enable comparison, expenses were
calculated assuming a mean duration of survival of two years. Results
: The average cost of a bilateral orchidectomy was $2869. This compare
d to $11 253 for goserelin and $12 329 for cyproterone acetate when us
ed alone in treat ng a single patient. FlutaMide is presently only app
roved for combination therapy with a luteinising hormone-releasing hor
mone agonist, and when used with goserelin an average cost of $16 148
per patient was projected. Conclusions: Bilateral orchidectomy is clea
rly the cheapest means of hormone manipulation for prostatic carcinoma
. Unless the costs of alternative therapies are drastically reduced in
Australia, their use is difficult to justify in other than exceptiona
l circumstances. We believe their use should be restricted presently t
o patients who would otherwise require a bilateral orchidectomy and ha
ve an anticipated survival of less than six months.