PRL and adenoma: The patient was a 48-year-old man who had been on 2 mg/day of haloperidol and an unspecified dose of lithium citrate. Serum studies revealed a prolactin level of 350 μg/L and imaging studies showed an adenoma measuring 1 cm in diameter. Haloperidol was discontinued and bromocriptine was started at 2.5 mg/day. Surgery was attempted but was unsuccessful in removing the adenoma. Quinagolide (up to 0.375 mg/day) and 2 mg/day of haloperidol were used, and the prolactin level decreased to 20 μg/L.