Prolactinoma Home A-Z Health Information Health Library A-Z Prolactinoma Overview Prolactinoma is a benign tumour of the pituitary gland which causes excessive prolactin production. Symptoms Irregular menstrual cycles, infertility, and milk production in women and enlarged breasts, decreased libido, and erectile dysfunction in men. Diagnosis Blood tests to assess prolactin levels and imaging studies like MRI to locate the tumour. Treatment Medications to reduce prolactin levels and shrink the tumour. In cases for which medications are ineffective or cause severe side effects, surgery may be necessary to remove the tumour. Regular monitoring is important to manage symptoms and prevent complications. Disclaimer: The information in this Health Library is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional with any questions about a medical condition or before starting any treatment. Use of this site and its content does not establish a doctor–patient relationship. In case of a medical emergency, call your local emergency number or visit the nearest emergency facility immediately.