摘要
Dear Editor, Four patients with erectile dysfunction （ED） induced by pituitary prolactinoma presented to our clinic from 2007 to 2008. The patients had been misdiagnosed nearly 2 years earlier at other hospitals because severe ED was the initial symptom. None of these patients had experi-enced successful and satisfactory intercourse in approximately 2 years despite being treated with numerous medications, including the repeated administration of phosphodiesterase-5 inhibitors （PDE5is） （sildenafil 100 mg and/or tadalafil 20 mg）. However, after successful treatment for pituitary prolactinoma, the response to PDE5is improved dramatically. The four cases are described in this report.
Dear Editor, Four patients with erectile dysfunction （ED） induced by pituitary prolactinoma presented to our clinic from 2007 to 2008. The patients had been misdiagnosed nearly 2 years earlier at other hospitals because severe ED was the initial symptom. None of these patients had experi-enced successful and satisfactory intercourse in approximately 2 years despite being treated with numerous medications, including the repeated administration of phosphodiesterase-5 inhibitors （PDE5is） （sildenafil 100 mg and/or tadalafil 20 mg）. However, after successful treatment for pituitary prolactinoma, the response to PDE5is improved dramatically. The four cases are described in this report.
